TY - CHAP A2 - Moore, D.M., and Reynolds, R.C., Jr. (Eds.) AU - Moore, D.M. AU - Reynolds, R.C., Jr. CY - New York PB - Oxford University Press PY - 1989 SP - 179–201 ST - Sample preparation techniques for clay minerals T2 - X-ray Diffraction and the Identification and Analysis of Clay Minerals TI - Sample preparation techniques for clay minerals ID - 12544 ER - TY - CHAP A2 - Moore, D.M., and Reynolds, R.C., Jr. (Eds.) AU - Moore, D.M. AU - Reynolds, R.C., Jr. CY - New York PB - Oxford University Press PY - 1989 SP - 241–271 ST - Identification of mixed-layered clay minerals T2 - X-ray diffraction and the Identification and Analysis of Clay Minerals TI - Identification of mixed-layered clay minerals ID - 12545 ER - TY - JOUR AB - Accretionary prisms commonly grow seaward, with the strata of the inner prism consisting of older, previously accreted outer prism rocks overlain by thick fore-arc basin strata. We focus on the Nankai Trough inner accretionary prism using three-dimensional (3-D) seismic data and logging data from the Integrated Ocean Drilling Program (IODP). We update the 3-D seismic volume using well velocity data to better constrain deeper horizons. Interpretation of these horizons reveals multiple folds with axial surfaces that strike near parallel to modern outer prism thrust faults, and we interpret that these folds formed as a result of thrust faulting. Reactivation of one inner prism thrust fault continued until at least ∼0.44 Ma, after the modern fore-arc basin formed, indicating that the inner prism had continued deformation until that time. Structural restorations of these folded seismic horizons demonstrate that ∼580 m of slip occurred on this steeply dipping reactivated thrust after fore-arc basin formation. Structural interpretation and analysis of logging-while-drilling data, including borehole images, in the deep inner prism revealed intense deformation of a generally homogenous lithology characterized by bedding that dips steeply (60°-90°), intersected by faults and fractures that have a range of dips and densities. Our study of the deep Kumano Basin provides new insights into the structure of the inner prism and reveals that although the inner prism has partially preserved inherited outer prism structures, these older folds and faults are steeply rotated and cut by multiple fracture populations during subsequent deformation. Abstract Copyright (2016), American Geophysical Union. All Rights Reserved. AU - Boston, Brian AU - Moore, Gregory F. AU - Jurado, María José AU - Sone, Hiroki IS - 2 J2 - Affiliation (analytic): University of Hawaii at Manoa, Department of Geology and Geophysics, Honolulu, HI Affiliation (monographic): University of Hawaii at Manoa, Department of Geology and Geophysics, Honolulu, HI, United States Coordinates: N324000 N334000 E1370000 E1361500 illus., incl. sketch map Contains 76 references Research Program: IODP Integrated Ocean Drilling Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Geochemistry, Geophysics, Geosystems - G>3`, 17(2), p.485-500. Publisher: American Geophysical Union and The Geochemical Society, United States. ISSN: 1525-2027 Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom, Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union GeoRef ID: 2018078495 DOI: 10.1002/2015GC006185 KW - Accretionary wedges Deep-seated structures Deformation Expedition 319 Faults Folds Fractures Geophysical methods Geophysical profiles Geophysical surveys IODP Site C0002 IODP Site C0009 Integrated Ocean Drilling Program Kumano Basin Marine geology Measurement-while-drilling NanTroSEIZE Nankai Trough North Pacific Northwest Pacific Pacific Ocean Reactivation Rotation Seismic methods Seismic profiles Surveys Three-dimensional models Thrust faults Well-logging West Pacific 07 Marine Geology and Oceanography 16 Structural Geology LA - English PY - 2016 SN - 1525-2027 SP - 485–500 ST - Deformation of the Nankai Trough inner accretionary prism: the role of inherited structures T2 - Geochemistry, Geophysics, Geosystems TI - Deformation of the Nankai Trough inner accretionary prism: the role of inherited structures UR - https://doi.org/10.1002/2015GC006185 VL - 17 ID - 4000 ER - TY - JOUR AB - We report detailed thermal measurements undertaken during Integrated Ocean Drilling Program (IODP) Expeditions 315 and 316 along the Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) transect offshore the Kii Peninsula, Japan. Geothermal objectives included determining thermophysical rock properties of the cored material and characterizing the background thermal regime along this transect. New thermal conductivity measurements made with a divided bar are reported and supplement shipboard full- and half-space thermal conductivity measurements for a total of 938 thermal conductivity measurements. Thermal conductivity varies between about 1.0 W m-1 K-1 near the seafloor to 1.6 W m-1 K-1 at a depth of 1 km. Thermal conductivity generally increases with depth and correlates with variations in porosity and lithology. Thermal gradients along the transect are characterized by 48 sediment temperature measurements from 6 sites. Thermal corrections for the effects of bathymetric relief and sedimentation improve the confidence with which the heat flow values can be interpreted. Heat flow generally decreases with landward distance from the deformation front and varies from 70 mW m-2 just landward of the deformation front to 54 mW m-2 at sites characterizing the outer fore-arc high and to 57 mW m-2 at the Kumano Basin Site. IODP heat flow measurements are significantly lower than nearby seafloor heat flow measurements. This difference is most likely due to variations in bottom water temperature that have a large effect on values of seafloor heat flow. Thus the heat flow of the Nankai accretionary prism is lower than previously thought. We present thermal models of subduction along this transect and explore the impact of the initial geotherm. Conductive plate cooling based on the age of subducting seafloor (20 Myr) under predicts the observed heat flow. We find a good fit to the data using a geotherm appropriate for 10 Myr seafloor. The extra heat is interpreted in terms of back-arc thermal environments. AU - Harris, Robert N. AU - Schmidt-Schierhorn, Friederike AU - Spinelli, Glenn IS - 8 J2 - Affiliation (analytic): Oregon State University, College of Oceanic and Atmospheric Sciences, Corvallis, OR Affiliation (monographic): Oregon State University, College of Oceanic and Atmospheric Sciences, Corvallis, OR, United States Coordinates: N330114 N330119 E1364757 E1364753; N331300 N331300 E1364300 E1364300; N331400 N331400 E1364300 E1364300 illus., incl. 2 tables Contains 60 references Research Program: IODP Integrated Ocean Drilling Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Geochemistry, Geophysics, Geosystems - G>3`, Vol.12. Publisher: American Geophysical Union and The Geochemical Society, United States. ISSN: 1525-2027 Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States GeoRef ID: 2013046514 DOI: 10.1029/2011GC003593 KW - Asia Basins Crust Expedition 315 Expedition 316 Far East Fore-arc basins Heat flow Honshu IODP Site C0001 IODP Site C0004 IODP Site C0007 Integrated Ocean Drilling Program Japan Kii Peninsula Kumano Basin Marine geology Mid-ocean ridges NanTroSEIZE Nankai Trough North Pacific Northwest Pacific Ocean floors Oceanic crust Pacific Ocean Subduction zones Thermal conductivity West Pacific 18 Geophysics, Solid-Earth LA - English PY - 2011 SN - 1525-2027 SP - Q0AD16 ST - Heat flow along the NanTroSEIZE transect: results from IODP Expeditions 315 and 316 offshore the Kii Peninsula, Japan T2 - Geochemistry, Geophysics, Geosystems TI - Heat flow along the NanTroSEIZE transect: results from IODP Expeditions 315 and 316 offshore the Kii Peninsula, Japan UR - https://doi.org/10.1029/2011GC003593 VL - 12 ID - 3855 ER - TY - JOUR AB - We examine the thermal effects of seamount subduction. Seamount subduction may cause transient changes in oceanic crust hydrogeology and plate boundary fault position. Prior to subduction, seamounts provide high-permeability pathways between the basaltic crustal aquifer and overlying ocean that can focus fluid flow and efficiently cool the oceanic crust. As the seamount is subducted, the high-permeability pathway is closed, shutting down the advective transfer of heat. If significant fluid flow occurs, it would be restricted after seamount subduction and would result in a redistribution of heat warming the trench and cooling landward parts of the system. Additionally, subducting seamounts can influence the position of the plate boundary fault that has thermal consequences by locally controlling the proportions of incoming sediment that subduct and accrete. Shifting the decollement to the seafloor at the trench in the wake of seamount subduction causes limited cooling focused at the toe of the margin wedge. We apply these features of seamount subduction to a thermal model for the Nankai Trough Seismogenic Zone Experiment transect on the margin of Japan. Models with hydrothermal circulation provide an explanation for anomalously high surface heat flux observations near the trench. They yield temperatures of ∼100°C-295°C for the rupture area of the 1944 Tonankai earthquake. Temperatures in the region of episodic tremor and slip are estimated at ∼290°C-325°C, ∼70°C cooler than a model with no fluid circulation. AU - Spinelli, G.A. AU - Harris, R.N. IS - 12 J2 - Affiliation (analytic): New Mexico Institute of Mining and Technology, Earth and Environmental Science Department, Socorro, NM Affiliation (monographic): New Mexico Institute of Mining and Technology, Earth and Environmental Science Department, Socorro, NM, United States Coordinates: N320000 N350000 E1380000 E1350000 illus., incl. 2 tables, sketch map Contains 69 references Research Program: IODP Integrated Ocean Drilling Program; ODP Ocean Drilling Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Geochemistry, Geophysics, Geosystems - G>3`, Vol.12. Publisher: American Geophysical Union and The Geochemical Society, United States. ISSN: 1525-2027 Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States GeoRef ID: 2013046519 DOI: 10.1029/2011GC003727 KW - Bottom-simulating reflectors Earthquakes Geophysical methods Heat flow Hydrothermal conditions Integrated Ocean Drilling Program Marine geology NanTroSEIZE Nankai Trough North Pacific Northwest Pacific Ocean Drilling Program Ocean floors Pacific Ocean Plate tectonics Seamounts Seismic methods Subduction Subduction zones Temperature Thermal effects Tonankai earthquake 1944 West Pacific 07 Marine Geology and Oceanography 18 Geophysics, Solid-Earth LA - English PY - 2011 SN - 1525-2027 SP - Q0AD21 ST - Thermal effects of hydrothermal circulation and seamount subduction; temperatures in the Nankai Trough Seismogenic Zone Experiment transect, Japan T2 - Geochemistry, Geophysics, Geosystems TI - Thermal effects of hydrothermal circulation and seamount subduction; temperatures in the Nankai Trough Seismogenic Zone Experiment transect, Japan UR - https://doi.org/10.1029/2011GC003727 VL - 12 ID - 3919 ER - TY - JOUR AB - Abstract The up-dip limit of seismogenesis in subduction zone forearcs depends on the lithological composition of the incoming sediment and its subsequent modification during compaction and diagenesis. Here we present results of a multimethodological approach to characterize the smectite-to-illite diagenesis in the accretionary prism of the Nankai Trough subduction zone offshore SW Japan. Our X-ray diffraction analysis, scanning electron microscopy, and transmission electron microscopy clay mineralogical analysis reveal that advanced states of smectite-to-illlite diagenesis occur in samples recovered from down to 3 km subseafloor at Integrated Ocean Drilling Program Site C0002, which sampled the inner accretionary prism. Our temperature- and time-dependent reaction kinetics models require elevated temperatures in the prism to explain the illitization, which is consistent with revised thermal models based on recent plate reconstructions. Biostratigraphic data suggest that the inner prism sediment was deposited during a period of slow or inactive subduction and buried in the accretionary prism after the Philippine Sea plate resumed subduction. Rapid burial in the past 6 Ma led to the formation of two authigenic smectite-illite phases consistent with a broad 1–9.3 Ma age determined by K-Ar dating. The low K+ smectite-illite reflects the long-term burial history, whereas the K+-rich smectite-illite was inherited from the younger accretion event. Our study predicts the illitization of smectite approaches completion at ~5 km below the seafloor in the hanging wall of the plate boundary and the megasplay fault zone, respectively, which coincides with the proposed seaward extent of coseismic slip in the 1944 Mw = 8.1 Tonankai earthquake along those faults. AU - Hüpers, A. AU - Grathoff, G. AU - Warr, L. N. AU - Wemmer, K. AU - Spinelli, G. AU - Underwood, M. B. DO - https://doi.org/10.1029/2018GC008015 IS - 2 N1 - https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018GC008015 PY - 2019 SN - 1525-2027 SP - 933–951 ST - Spatiotemporal characterization of smectite-to-illite diagenesis in the Nankai Trough accretionary prism revealed by samples from 3 km below seafloor T2 - Geochemistry, Geophysics, Geosystems TI - Spatiotemporal characterization of smectite-to-illite diagenesis in the Nankai Trough accretionary prism revealed by samples from 3 km below seafloor UR - https://doi.org/10.1029/2018GC008015 VL - 20 ID - 9403 ER - TY - JOUR AU - Kisch, H. J. DO - https://doi.org/10.1111/j.1525-1314.1991.tb00556.x IS - 6 N1 - https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1525-1314.1991.tb00556.x PY - 1991 SN - 0263-4929 SP - 665–670 ST - Illite crystallinity: recommendations on sample preparation, X-ray diffraction settings, and interlaboratory samples T2 - Journal of Metamorphic Geology TI - Illite crystallinity: recommendations on sample preparation, X-ray diffraction settings, and interlaboratory samples UR - https://doi.org/10.1111/j.1525-1314.1991.tb00556.x VL - 9 ID - 12541 ER - TY - JOUR AB - Semiquantitative mineral analysis has been done by X-ray diffraction on the < 2 μ- and 2–20 μ-size fractions of approximately five hundred Recent deep-sea core samples from the Atlantic, Antarctic, western Indian Oceans, and adjacent seas. Relative abundances of montmorillonite, illite, kaolinite, chlorite, gibbsite, quartz, amphibole, clinoptilolite-heulandite(?), and pyrophyllite(?) were determined. Mixed-layer clay minerals, feldspars, and dolomite were also observed but not quantitatively evaluated. From the patterns of mineral distribution, the following conclusions appear warranted:Most Recent Atlantic Ocean deep-sea clay is detritus from the continents. The formation of minerals in situ on the ocean bottom is relatively unimportant in the Atlantic but may be significant in parts of the southwestern Indian Ocean.Mineralogical analysis of the fine fraction of Atlantic Ocean deep-sea sediments is a useful indicator of sediment provenance. Kaolinite, gibbsite, pyrophyllite, mixed-layer minerals, and chlorite contribute the most unequivocal provenance information because they have relatively restricted loci of continental origin.Topographic control over mineral distribution by the Mid-Atlantic Ridge in the North Atlantic Ocean precludes significant eolian transport by the jet stream and emphasizes the importance of transport to and within that part of the deep-sea by processes operative at or near the sediment-water interface.Transport of continent-derived sediment to the equatorial Atlantic is primarily by rivers draining from South America and by rivers and wind from Africa.The higher proportion of kaolinite and gibbsite in deep-sea sediments adjacent to small tropical South American rivers reflects a greater intensity of lateritic weathering than is observed near the mouths of the larger rivers. This may be explained by a greater variety of pedogenic conditions in the larger drainage basins, resulting in an assemblage with proportionately less lateritic material in the detritus transported by the larger rivers despite their quantitatively greater influence on deep-sea sediment accumulation.In the South Atlantic Ocean, the fine-fraction mineral assemblage of surface sediment in the Argentine Basin is sufficiently unlike that adjacent to the mouth of the Rio de la Plata to preclude it as a major Recent sediment source for that basin. The southern Argentine Continental Shelf, the Scotia Ridge, and the Weddell Sea arc mineralogically more likely immediate sources. Transport from the Weddell Sea by the Antarctic Bottom Water may be responsible for the northward transport of fine-fraction sediment along parts of the western South Atlantic as far north as the Equator. AU - Biscaye, Pierre E. DO - https://doi.org/10.1130/0016-7606(1965)76[803:Masord]2.0.Co;2 IS - 7 PY - 1965 SN - 0016-7606 SP - 803–832 ST - Mineralogy and sedimentation of recent deep-sea clay in the Atlantic Ocean and adjacent seas and oceans T2 - Geological Society of America Bulletin TI - Mineralogy and sedimentation of recent deep-sea clay in the Atlantic Ocean and adjacent seas and oceans UR - https://doi.org/10.1130/0016-7606(1965)76[803:MASORD]2.0.CO;2 VL - 76 Y2 - 4/8/2021 ID - 12532 ER - TY - JOUR AB - The Integrated Ocean Drilling Program, as part of the Nankai Trough Seismogenic Zone Experiment, recovered samples of mud and mudstone from the Kumano forearc basin, the inner and outer accretionary prisms, the overlying slope apron, and the Shikoku Basin (subduction inputs). This unprecedented suite of cores and cuttings captures an unusually complicated history of subduction-zone tectonics, erosion and dispersal of suspended sediment from multiple sources, and sedimentation in diverse environments. Our X-ray diffraction analyses of 1567 samples show that clay-mineral assemblages shifted gradually throughout the subduction system, from a smectite-rich assemblage during the Miocene to a more illite- and chlorite-rich assemblage during the Pliocene and Quaternary. Miocene muds in the Shikoku Basin (Sites C0011 and C0012) originated primarily from weathering of anomalous, near-trench felsic-volcanic rocks along a broad swath of the Outer Zone of Japan. The middle Miocene, however, was also a time of sediment transport into the Shikoku Basin by turbidity currents emanating from the East China Sea (Kyushu Fan). Interfingering of clays from those two sources resulted in considerable compositional scatter. Our results also reveal large discrepancies in contents of smectite between Miocene mudstones from the inner accretionary prism (Sites C0001 and C0002) and coeval mudstones from the Shikoku Basin. We suggest that frontal accretion during the early-late Miocene was a product of Pacific plate subduction rather than subduction of the Philippine Sea plate. Routing of sand through the East China Sea was effectively cut off by ca. 7 Ma due to rifting of the Okinawa Trough and the buildup of topography along the Ryukyu arc-trench system. Subduction of Shikoku Basin restarted at ca. 6 Ma, and denudation of the Outer Zone continued through the Pliocene and Quaternary. Those adjustments in weathering, from volcanoes to exposures of plutons and metasedimentary rocks, gradually increased the concentrations of illite and chlorite. By the late Pliocene, multiple sources, including the rapidly uplifted Izu-Honshu collision zone, supplied suspended sediment through a combination of transverse and trench-parallel (axial) routing. At the same time, the northeast-directed Kuroshio Current intensified at ca. 3.5 Ma. That regional-scale oceanographic transition probably resulted in more illitic clays moving from offshore Taiwan through the Okinawa Trough, although its compositional signal is masked by simultaneous enrichment of illite from the Outer Zone sources. Accreted trench-wedge deposits in the frontal prism (Sites C0006 and C0007) originated mostly from the Izu-Honshu collision zone, and most were transported down the axis of the trench by sediment gravity flow. Hemipelagic deposits in the Kumano Basin (Site C0002) were homogenized from a combination of transverse gravity flows, northeast-directed surface current, and thermohaline bottom currents. Slope-apron and slope-basin deposits (including mass-transport deposits) likewise show uniform clay-mineral assemblages indicative of northeast-directed transport by the Kuroshio Current, transverse resedimentation, and bottom-water circulation. Collectively, these differences in sediment composition in both time and space set the Nankai-Shikoku depositional system apart from other subduction zones, and they are important to consider when assessing the margin's hydrogeology and frictional and/or geotechnical properties. AU - Underwood, Michael B. AU - Guo, Junhua IS - 5 J2 - Affiliation (analytic): New Mexico Institute of Mining and Technology, Department of Earth and Environmental Science, Socorro, NM Affiliation (monographic): New Mexico Institute of Mining and Technology, Department of Earth and Environmental Science, Socorro, NM, United States Coordinates: N310000 N340000 E1380000 E1330000 illus., incl. geol. sketch maps, charts, strat. cols., sect. Contains 360 references Research Program: IODP Integrated Ocean Drilling Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Geosphere (Boulder, CO), 14(5), p.2009-2043. Publisher: Geological Society of America, Boulder, CO, United States. ISSN: 1553-040X Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States, Reference includes data supplied by the Geological Society of America GeoRef ID: 2019006697 DOI: 10.1130/GES01626.1 KW - Accretion Asia Basins Cenozoic Chlorite Chlorite group Clastic rocks Clastic sediments Clay minerals Concentration Erosion Expedition 316 Far East Fore-arc basins Gravity flows IODP Site C0001 IODP Site C0002 IODP Site C0006 IODP Site C0007 IODP Site C0011 IODP Site C0012 Illite Integrated Ocean Drilling Program Intrusions Izu-Honshu collision zone Japan Kumano Basin Kyusha Fan Metamorphic rocks Metasedimentary rocks Mineral assemblages Miocene Mud NanTroSEIZE Nankai-Shikoku subduction system Neogene North Pacific Northwest Pacific Ocean floors Okinawa Pacific Ocean Philippine Sea Philippine Sea Plate Plate tectonics Plates Pliocene Plutons Quaternary Rifting Ryukyu Islands Ryukyu Trench Sand Sandstone Sedimentary rocks Sediments Sheet silicates Shikoku Shikoku Basin Silicates Smectite Subduction Tertiary Thermohaline circulation Trenches Turbidite Turbidity West Pacific X-ray diffraction data 06 Petrology, Sedimentary 18 Geophysics, Solid-Earth LA - English N1 - http://hdl.handle.net/10.1130/GES01626.1 PY - 2018 SN - 1553-040X SP - 2009–2043 ST - Clay-mineral assemblages across the Nankai-Shikoku subduction system, offshore Japan; a synthesis of results from the NanTroSEIZE project T2 - Geosphere TI - Clay-mineral assemblages across the Nankai-Shikoku subduction system, offshore Japan; a synthesis of results from the NanTroSEIZE project UR - https://doi.org/10.1130/GES01626.1 VL - 14 ID - 5032 ER - TY - JOUR AU - Freed, R. AU - Peacor, D. DO - https://doi.org/10.1180/claymin.1989.024.2.05 PY - 1989 SP - 171–180 ST - Variability in temperature of the smectite/illite reaction in Gulf Coast sediments T2 - Clay Minerals TI - Variability in temperature of the smectite/illite reaction in Gulf Coast sediments UR - https://doi.org/10.1180/claymin.1989.024.2.05 VL - 24 ID - 13617 ER - TY - JOUR AB - Following a round-table discussion at the Mid-European Clay Conference in Dresden 2014, new recommendations for illite ‘crystallinity’ Kübler index standardization have been agreed upon. The use of Crystallinity Index standards in the form of rock-fragment samples will be continued, along with the same numerical scale of measurement presented by Warr & Rice (1994). However, in order to be compatible with the original working definition of Kübler's (1967) anchizone, the upper and lower boundary limits of the Crystallinity Index Standard (CIS) scale are adjusted appropriately from 0.25°2θ and 0.42°2θ to 0.32°2θ and 0.52°2θ. This adjustment is based on an inter-laboratory correlation between the laboratories of Basel, Neuchâtel and the CIS scale. The details of this correction are presented in this first note, as discussed at the round-table meeting and will be further substantiated by a correlation program between CIS and former Kübler–Frey–Kisch standards. AU - Warr, L. N. AU - Ferreiro Mählmann, R. DB - Cambridge Core DO - https://doi.org/10.1180/claymin.2015.050.3.02 DP - Cambridge University Press ET - 2018/01/02 IS - 3 KW - Kübler index Crystallinity Index Standard Kübler–Frey–Kisch standards Very-low-grade metamorphism anchizone N1 - https://www.cambridge.org/core/article/recommendations-for-kubler-index-standardization/CC39CE655EB6E8F5E5B46351F10C17C4 PY - 2015 SN - 0009-8558 SP - 283–286 ST - Recommendations for Kübler Index standardization T2 - Clay Minerals TI - Recommendations for Kübler Index standardization UR - https://doi.org/10.1180/claymin.2015.050.3.02 VL - 50 ID - 12551 ER - TY - JOUR AB - In 2010, the first long-term borehole monitoring system was deployed at approximately 900 m below the sea floor (mbsf) and was assumed to be situated above the updip limit of the seismogenic zone in the Nankai Trough off Kumano (Site C0002). Four temperature records show that the effect of drilling diminished in less than 2 years. Based on in situ temperatures and thermal conductivities measured on core samples, the temperature measurements and heat flow at 900 mbsf are estimated to be 37.9°C and 56 ± 1 mW/m2, respectively. This heat flow value is in excellent agreement with that from the shallow borehole temperature corrected for rapid sedimentation in the Kumano Basin. We use these values in the present study to extrapolate the temperature below 900 mbsf for a megasplay fault at approximately 5,200 mbsf and a plate boundary fault at approximately 7,000 mbsf. To extrapolate the temperature downward, we use logging-while-drilling (LWD) bit resistivity data as a proxy for porosity and estimate thermal conductivity from this porosity using a geometrical mean model. The one-dimensional (1-D) thermal conduction model used for the extrapolation includes radioactive heat and frictional heat production at the plate boundary fault. The estimated temperature at the megasplay ranges from 132°C to 149°C, depending on the assumed thermal conductivity and radioactive heat production values. These values are significantly higher, by up to 40°C, than some of previous two-dimensional (2-D) numerical model predictions that can account for the high heat flow seaward of the deformation front, including a hydrothermal circulation within the subducted igneous oceanic crust. However, our results are in good agreement with those of the 2-D model, which does not include the advection cooling effect. The results imply that 2-D geometrical effects as well as the influence of the advective cooling may be critical and should be evaluated more quantitatively. Revision of 2-D simulation by introducing our new boundary conditions (37.9°C of in situ temperature at 900 mbsf and approximately 56 mW/m2 heat flow) will be essential. Ultimately, in situ temperature measurements at the megasplay fault are required to understand seismogenesis in the Nankai subduction zone. AU - Sugihara, Takamitsu AU - Kinoshita, Masataka AU - Araki, Eichiro AU - Kimura, Toshinori AU - Kyo, Masanori AU - Namba, Yasuhiro AU - Kido, Yukari AU - Sanada, Yoshinori AU - Thu, Moe Kyaw DA - 2014/09/04 DO - 10.1186/1880-5981-66-107 IS - 1 PY - 2014 SN - 1880-5981 SP - 107 ST - Re-evaluation of temperature at the updip limit of locked portion of Nankai megasplay inferred from IODP Site C0002 temperature observatory T2 - Earth, Planets and Space TI - Re-evaluation of temperature at the updip limit of locked portion of Nankai megasplay inferred from IODP Site C0002 temperature observatory UR - https://doi.org/10.1186/1880-5981-66-107 VL - 66 ID - 10530 ER - TY - JOUR AB - Illite-smectites in cored Dakota Group (Cretaceous) shales and bentonites of the northern Denver Basin, identified using a modification of Reynolds' and Hower's (1970) X-ray diffraction criteria, show decreasing sample-sample expandability ranges, lower modal expandability, and a change from random to ordered mixed-layering with increasing burial depths and temperatures. These are results characteristic of burial diagenesis as described by Perry and Hower (1970). Ordered illite-smectites from low-temperature wells and much of the kaolinite (+ or - chlorite, vermiculite) and discrete illite from all wells are interpreted as detrital. Episodic but frequent admixture of highly-expandable bentonitic illite-smectite with detrital clays is reflected by fluctuating expandabilities within individual cores and the lack of samples containing both highly-expandable illite-smectite and high proportions of other clay minerals. Differential diagenesis and/or differential sedimentation rates do not satisfactorily account for lower modal expandabilities and increased proportions of ordered illite-smectite observed in shales from "D" and "J" sand-stones compared with those from "Huntsman" and Skull Creek shales of equivalent temperatures. Instead, they are attributed to provenance differences which gave lower-expandability illite-smectites--and a "head start" on diagenetic trends--to sand-associated shales. Eastern and western provenances identified from heavy mineral studies (e.g., MacKenzie and Poole, 1962) for "D" and "J" sands were not matched by similar clay mineral provenances affecting shales. However, decreasing proportions of kaolinite (+ or - chlorite, vermiculite) encountered from northeastern to southeastern "D" locales are interpreted as the results of differing sources. AU - Rettke, Robert C. DO - 10.1306/212f7ccf-2b24-11d7-8648000102c1865d IS - 2 PY - 1981 SN - 1527-1404 SP - 541–551 ST - Probable burial diagenetic and provenance effects on Dakota Group clay mineralogy, Denver Basin T2 - Journal of Sedimentary Research TI - Probable burial diagenetic and provenance effects on Dakota Group clay mineralogy, Denver Basin UR - https://doi.org/10.1306/212F7CCF-2B24-11D7-8648000102C1865D VL - 51 Y2 - 4/9/2021 ID - 12547 ER - TY - CHAP A2 - Strasser, M., Dugan, B., Kanagawa, K., Moore, G.F., Toczko, S., Maeda, L., and the Expedition 338 Scientists AB - This report summarizes the results of X-ray diffraction analyses of cuttings samples (1-4 mm diameter) from Integrated Ocean Drilling Program Expedition 338 Hole C0002F, located offshore southwest Japan. We analyzed 37 specimens (<2 µm size fraction) from the upper Nankai accretionary prism, collected between 1190 and 1990 meters below seafloor. Smectite is generally the most abundant mineral in the clay-size fraction. Within lithologic Unit IV, smectite in the bulk sediment averages 25.1 wt% (standard deviation = 3.6), whereas illite and kaolinite + chlorite average 18.9 (standard deviation = 2.0) and 11.3 wt% (standard deviation = 2.3), respectively. Within Unit V, smectite in the bulk sediment decreases to an average of 21.8 wt% (standard deviation = 2.8) and values of illite and kaolinite + chlorite average 21.8 (standard deviation = 3.5) and 14.1 wt% (standard deviation = 3.5 and 2.4), respectively. The expandability of illite/smectite averages 69%, and values decrease downhole. The proportion of illite in illite/smectite mixed-layer clays averages 25%, and those values increase downhole. Values of illite crystallinity index (average = 0.52Δ°2θ) are consistent with detrital source areas exposed to advanced levels of diagenesis and anchizone metamorphism. AU - Underwood, Michael B. AU - Song, Chen CY - Yokohama J2 - Affiliation (analytic): New Mexico Institute of Mining and Technology, Department of Earth and Environmental Science, Socorro, NM Affiliation (monographic): New Mexico Institute of Mining and Technology, Department of Earth and Environmental Science, Socorro, NM, United States Corporate Affiliation (monographic): Integrated Ocean Drilling Program, Expedition 338 Scientists, College Station, TX Coordinates: N331800 N331801 E1363801 E1363800 illus., incl. sects., 3 tables, sketch map Contains 32 references Research Program: IODP Integrated Ocean Drilling Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Proceedings of the Integrated Ocean Drilling Program; NanTroSEIZE Stage 3; NanTroSEIZE plate boundary deep riser 2; Expedition 338 of the riser drilling platform from and to Shimizu, Japan; Sites C0002, C0012, C0018, and C0021-C0022, 1 October 2012-13 January 2013, Michael Strasser, Brandon Dugan, Kyuichi Kanagawa, Gregory Moore, Sean Toczko, Lena Maeda, Yukari Kido, Moe Kyaw Thu, Yoshinori Sanada, Lionel Esteban, Olivier Fabbri, Jacob Geersen, Sebastian Hammerschmidt, Hiroki Hayashi, Katrien Heirman, Andre Hüpers, Maria José Jurado Rodriguez, Koji Kameo, Toshiya Kanamatsu, Hiroko Kitajima, Harue Masuda, Kitty Milliken, Ravi Mishra, Isao Motoyama, Katelyn Olcott, Kiyokazu Oohashi, Kevin T. Pickering, Sebastian G. Ramirez, Harunur Rashid, Derek Sawyer, Anja Schleicher and Shan Yehua; Integrated Ocean Drilling Program, Expedition 338 Scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program, Vol.338, 15p. Publisher: International Ocean Discovery Program, Washington, DC, United States. ISSN: 1930-1014 Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. GeoRef ID: 2016085299 DOI: 10.2204/iodp.proc.338.206.2016 KW - Accretionary wedges Asia Boreholes Chlorite Chlorite group Clastic rocks Clay minerals Continental margin Cuttings Diagenesis Expedition 338 Far East Honshu IODP Site C0002 Illite Integrated Ocean Drilling Program Japan Kaolinite Kii Peninsula Kumano Basin Mineral assemblages Mineral composition Mudstone NanTroSEIZE Nankai Trough North Pacific Northwest Pacific Pacific Ocean Sedimentary rocks Sheet silicates Silicates Smectite West Pacific X-ray diffraction data 02 Geochemistry 06 Petrology, Sedimentary LA - English PB - Integrated Ocean Drilling Program PY - 2016 SN - 1930-1014 ST - Data report: clay mineral assemblages in cuttings from Hole C0002F, IODP Expedition 338, upper Nankai Trough accretionary prism T2 - Proceedings of the Integrated Ocean Drilling Program TI - Data report: clay mineral assemblages in cuttings from Hole C0002F, IODP Expedition 338, upper Nankai Trough accretionary prism UR - https://doi.org/10.2204/iodp.proc.338.206.2016 VL - 338 ID - 4630 ER - TY - CHAP A2 - Tobin, H., Hirose, T., Saffer, D., Toczko, S., Maeda, L., Kubo, Y., and the Expedition 348 Scientists AB - The Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) is a multidisciplinary investigation of fault mechanics and seismogenesis along subduction megathrusts and includes reflection and refraction seismic imaging, direct sampling by drilling, in situ measurements, and long-term monitoring in conjunction with laboratory and numerical modeling studies. The fundamental objectives of NanTroSEIZE are to characterize the nature of fault slip and strain accumulation, fault and wall rock composition, fault architecture, and state variables throughout an active plate boundary system. As part of the NanTroSEIZE program, operations during Integrated Ocean Drilling Program (IODP) Expedition 348 were planned to extend and case riser Hole C0002F, begun during IODP Expedition 326 in 2010 and continued during Expedition 338 in 2012, from 860 to 3600 meters below the seafloor (mbsf). Riser operations during Expedition 348 were carried out and deepened the hole to 3058 mbsf, a new maximum depth record in scientific ocean drilling. Operations included installation and cementing of 13 3/8 inch casing to 2008.9 mbsf and an 11 3/4 inch liner to 2922.5 mbsf, stabilizing the borehole for future deepening. Reaching this depth required two sidetracking operations from the original Hole C0002F, resulting in the designation of Holes C0002N and C0002P for the successively deeper sidetracks. During drilling, a suite of logging-while-drilling (LWD) and measurement-while-drilling (MWD), mud-gas, and cuttings data were collected over the interval from 2162.5 to 3058.5 mbsf in Hole C0002P, and a partial suite was collected in Hole C0002N. The interval from 2163 to 2218 mbsf was cored with the rotary core barrel (RCB). Planned future riser drilling operations will deepen the hole to penetrate the plate boundary fault at ∼4600-5200 mbsf. Additionally, a test hole for a prototype slimhole small-diameter RCB (SD-RCB) coring system, Hole C0002M, was drilled in riserless mode near Hole C0002F. The hole was advanced to 475 mbsf, where four cores were collected to 512.5 mbsf. Overall, Expedition 348 sampled and logged a deep interval in Holes C0002N and C0002P within the inner accretionary wedge, from 856 to 3058.5 mbsf, including a never-before sampled zone in the lowermost ∼1 km of drilling. Cores were collected over a 55.5 m interval from 2163 to 2218.5 mbsf. The sampled sedimentary rocks are composed of hemipelagic sediment and fine turbidites with rare ash. The entire interval from ∼2145.5 to 2945.5 mbsf has an apparent depositional age of 9.56-10.73 Ma based on nannofossil first and last occurrence data. These ages are consistent with accretion of a middle Miocene section of either lower Shikoku Basin equivalent or Miocene-age trench fill; facies analysis suggests the former. Bedding attitudes were ubiquitously steep, measured at 60δ-90δ in both cores and resistivity image logs. A range of structural fabrics was sampled, including common development of scaly clay fabrics with polished and slickensided clayey surfaces at many depths throughout the drilled interval. Structural fabrics became progressively stronger with depth, and carbonate cement and veins became prevalent below 2100 mbsf. In the cored interval, a well-developed foliated fault zone was identified at 2204.9-2205.8 mbsf, with unknown overall displacement sense or amount. This zone contains abundant carbonate cement and vein fill. AU - Tobin, H., Hirose, T., Saffer, D., Toczko, S., Maeda, L., Kubo, Y., Boston, B., Broderick, A., Brown, K., Crespo-Blanc, A., Even, E., Fuchida, S., Fukuchi, R., Hammerschmidt, S., Henry, P., Josh, M., Jurado, M.J., Kitajima, H., Kitamura, M., Maia, A., Otsubo, M., Sample, J., Schleicher, A., Sone, H., Song, C., Valdez, R., Yamamoto, Y., Yang, K., Sanada, Y., Kido, Y., and Hamada, Y. CY - College Station, TX J2 - Affiliation (analytic): University of Wisconsin-Madison, Department of Geoscience, Madison, WI Affiliation (monographic): University of Wisconsin-Madison, Department of Geoscience, Madison, WI, United States Corporate Affiliation (monographic): Integrated Ocean Drilling Program, Expedition 348 Scientists, College Station, TX Coordinates: N331800 N331801 E1363801 E1363800 illus., incl. sects., 5 tables, sketch map Contains 49 references Research Program: IODP Integrated Ocean Drilling Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Proceedings of the Integrated Ocean Drilling Program; NanTroSEIZE Stage 3; NanTroSEIZE plate boundary deep riser 3; Expedition 348 of the riser drilling platform from and to Shimizu, Japan; Site C0002, 13 September 2013-20 January 2014, Harold Tobin, Takehiro Hirose, Demian M. Saffer, Sean Toczko, Lena Maeda, Yusuke Kubo, Yoshinori Sanada, Yukari Kido, Yohei Hamada, Brian Boston, Aisling Broderick, Kevin Brown, Ana Crespo-Blanc, Emilie Even, Shigeshi Fuchida, Rina Fukuchi, Sebastian Hammerschmidt, Pierre Henry, Matthew Josh, María José Jurado, Hiroko Kitajima, Manami Kitamura, Ana Maia, Makoto Otsubo, James Sample, Anja Schleicher, Hiroki Sone, Chen Song, Robert Valdez, Yuzuru Yamamoto and Kiho Yang; Integrated Ocean Drilling Program, Expedition 348 Scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program (Online), Vol.348, 44p. Publisher: Integrated Ocean Drilling Program Management International for the Integrated Drilling Program (IODP), Washington, DC, United States. ISSN: 1930-1014 Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. GeoRef ID: 2015017327 DOI: 10.2204/iodp.proc.348.101.2015 KW - Algae Asia Biostratigraphy Boreholes Cenozoic Clastic rocks Cores Cuttings Expedition 348 Far East Faults Honshu IODP Site C0002 Integrated Ocean Drilling Program Japan Kii Peninsula Kumano Basin Lithostratigraphy Magnetostratigraphy Marine sediments Microfossils NanTroSEIZE Nankai Trough Nannofossils Neogene North Pacific Northwest Pacific Pacific Ocean Paleomagnetism Physical properties Plantae Plate boundaries Pleistocene Quaternary Sedimentary rocks Sediments Subduction zones Tertiary Well logs West Pacific 12 Stratigraphy, Historical Geology and Paleoecology LA - English PB - Integrated Ocean Drilling Program PY - 2015 SN - 1930-1014 ST - Expedition 348 summary T2 - Proceedings of the Integrated Ocean Drilling Program TI - Expedition 348 summary UR - https://doi.org/10.2204/iodp.proc.348.101.2015 VL - 348 ID - 5038 ER - TY - CHAP A2 - Tobin, H., Hirose, T., Saffer, D., Toczko, S., Maeda, L., Kubo, Y., and the Expedition 348 Scientists AU - Tobin, H., Hirose, T., Saffer, D., Toczko, S., Maeda, L., Kubo, Y., Boston, B., Broderick, A., Brown, K., Crespo-Blanc, A., Even, E., Fuchida, S., Fukuchi, R., Hammerschmidt, S., Henry, P., Josh, M., Jurado, M.J., Kitajima, H., Kitamura, M., Maia, A., Otsubo, M., Sample, J., Schleicher, A., Sone, H., Song, C., Valdez, R., Yamamoto, Y., Yang, K., Sanada, Y., Kido, Y., and Hamada, Y. CY - College Station, TX J2 - Affiliation (analytic): University of Wisconsin-Madison, Department of Geoscience, Madison, WI Affiliation (monographic): University of Wisconsin-Madison, Department of Geoscience, Madison, WI, United States Corporate Affiliation (monographic): Integrated Ocean Drilling Program, Expedition 348 Scientists, College Station, TX Coordinates: N331800 N331801 E1363801 E1363800 illus., incl. 42 tables Contains 50 references Research Program: IODP Integrated Ocean Drilling Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Proceedings of the Integrated Ocean Drilling Program; NanTroSEIZE Stage 3; NanTroSEIZE plate boundary deep riser 3; Expedition 348 of the riser drilling platform from and to Shimizu, Japan; Site C0002, 13 September 2013-20 January 2014, Harold Tobin, Takehiro Hirose, Demian M. Saffer, Sean Toczko, Lena Maeda, Yusuke Kubo, Yoshinori Sanada, Yukari Kido, Yohei Hamada, Brian Boston, Aisling Broderick, Kevin Brown, Ana Crespo-Blanc, Emilie Even, Shigeshi Fuchida, Rina Fukuchi, Sebastian Hammerschmidt, Pierre Henry, Matthew Josh, María José Jurado, Hiroko Kitajima, Manami Kitamura, Ana Maia, Makoto Otsubo, James Sample, Anja Schleicher, Hiroki Sone, Chen Song, Robert Valdez, Yuzuru Yamamoto and Kiho Yang; Integrated Ocean Drilling Program, Expedition 348 Scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program (Online), Vol.348, 259p. Publisher: Integrated Ocean Drilling Program Management International for the Integrated Drilling Program (IODP), Washington, DC, United States. ISSN: 1930-1014 Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. GeoRef ID: 2015017329 DOI: 10.2204/iodp.proc.348.103.2015 KW - Algae Asia Biostratigraphy Boreholes Cenozoic Chemostratigraphy Clastic rocks Cores Cuttings Expedition 348 Far East Faults Gases Geochemistry Honshu Hydrocarbons Hydrochemistry IODP Site C0002 Integrated Ocean Drilling Program Japan Kii Peninsula Kumano Basin Lithostratigraphy Magnetostratigraphy Microfossils NanTroSEIZE Nankai Trough Nannofossils Neogene North Pacific Northwest Pacific Organic compounds Pacific Ocean Paleomagnetism Physical properties Plantae Pleistocene Pore water Quaternary Sedimentary rocks Subduction zones Tertiary Well logs West Pacific 12 Stratigraphy, Historical Geology and Paleoecology LA - English PB - Integrated Ocean Drilling Program PY - 2015 SN - 1930-1014 ST - Site C0002 T2 - Proceedings of the Integrated Ocean Drilling Program TI - Site C0002 UR - https://doi.org/10.2204/iodp.proc.348.103.2015 VL - 348 ID - 5046 ER - TY - CHAP A2 - Tobin, H., Hirose, T., Saffer, D., Toczko, S., Maeda, L., Kubo, Y., and the Expedition 348 Scientists AB - This report summarizes the results of X-ray diffraction analyses of core samples from Integrated Ocean Drilling Program Hole C0002P. Twenty-three specimens were collected from the Nankai accretionary prism over a depth interval of 2163 to 2218 meters below seafloor. Analyses of the <2 mm size fraction show considerable amounts of variation in relative mineral abundances. Percentages of clay-size smectite average 39.5 wt% (standard deviation of 17.9). Percentages of illite and kaolinite + chlorite average 32.4 and 25.1 wt%, respectively (standard deviations of 8.5 and 7.8). Values of illite/smectite expandability average 70%, and the percentage of illite in illite/smectite mixed-layer clays averages 41%. Values of illite crystallinity index are consistent with advanced levels of diagenesis to anchizone metamorphism within detrital source areas. AU - Underwood, Michael B. AU - Song, Chen CY - College Station, TX J2 - Affiliation (analytic): New Mexico Institute of Mining and Technology, Department of Earth and Environmental Science, Socorro, NM Affiliation (monographic): New Mexico Institute of Mining and Technology, Department of Earth and Environmental Science, Socorro, NM, United States Corporate Affiliation (monographic): Integrated Ocean Drilling Program, Expedition 348 Scientists, College Station, TX Coordinates: N331800 N331801 E1363801 E1363800 illus., incl. sects., 1 table, sketch map Contains 36 references Research Program: IODP Integrated Ocean Drilling Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Proceedings of the Integrated Ocean Drilling Program; NanTroSEIZE Stage 3; NanTroSEIZE plate boundary deep riser 3; Expedition 348 of the riser drilling platform from and to Shimizu, Japan; Site C002, 13 September 2013-20 January 2014, Harold J. Tobin, Takehiro Hirose, Demian Saffer, Sean Toczko, Lena Maeda, Yusuke Kubo, Yoshinori Sanada, Yukari Kido, Yohei Hamada, Brian Boston, Aisling Broderick, Kevin Brown, Ana Crespo-Blanc, Emilie Even, Shigeshi Fuchida, Rina Fukuchi, Sebastian Hammerschmidt, Pierre Henry, Matthew Josh, María José Jurado, Hiroko Kitajima, Manami Kitamura, Ana Maia, Makoto Otsubo, James Sample, Anja Schleicher, Hiroki Sone, Chen Song, Robert Valdez, Yuzuru Yamamoto and Kiho Yang; Integrated Ocean Drilling Program, Expedition 348 Scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program, Vol.348. Publisher: International Ocean Discovery Program, Washington, DC, United States. ISSN: 1930-1014 Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. GeoRef ID: 2017020876 DOI: 10.2204/iodp.proc.348.202.2016 KW - Accretionary wedges Chlorite Chlorite group Clay minerals Cores Crystallinity Diagenesis Expedition 348 IODP Site C0002 Illite Integrated Ocean Drilling Program Kumano Basin Marine sediments Mineral assemblages NanTroSEIZE Nankai Trough North Pacific Northwest Pacific Pacific Ocean Sediments Sheet silicates Silicates Smectite West Pacific X-ray diffraction data 02 Geochemistry 06 Petrology, Sedimentary LA - English PB - Integrated Ocean Drilling Program PY - 2016 SN - 1930-1014 ST - Data report: clay mineral assemblages in cores from Hole C0002P, IODP Expedition 348, Nankai Trough accretionary prism T2 - Proceedings of the Integrated Ocean Drilling Program TI - Data report: clay mineral assemblages in cores from Hole C0002P, IODP Expedition 348, Nankai Trough accretionary prism UR - https://doi.org/10.2204/iodp.proc.348.202.2016 VL - 348 ID - 5035 ER - TY - CHAP A2 - Tobin, H., Hirose, T., Saffer, D., Toczko, S., Maeda, L., Kubo, Y., and the Expedition 348 Scientists AB - This report summarizes the results of X-ray diffraction analyses of cuttings samples (1-4 mm diameter ) from Integrated Ocean Drilling Program Hole C0002N, which is located offshore southwest Japan. The analyses included 73 specimens (<2 µm size fraction) from the upper to middle levels of the Nankai accretionary prism. The cuttings were collected over a depth interval of 1175 to 2305 meters below seafloor (mbsf). Smectite is generally the most abundant clay mineral. Within lithologic Unit IV, percentages of smectite in the bulk sediment average 25.5 wt% (standard deviation = 5.7), whereas values for illite and undifferentiated kaolinite + chlorite average 19.5 and 11.9 wt%, respectively (standard deviations = 2.3 and 1.9). Within lithologic Unit V, percentages of smectite in the bulk sediment decrease to an average of 21.4 wt% (standard deviation = 2.1); mean values of illite and kaolinite + chlorite are 21.6 and 14.9 wt%, respectively (standard deviations = 2.1 and 2.5). The expandability of illite/smectite averages 64%, and values decrease downsection. The average proportion of illite in illite/smectite mixed-layer clays is 35%, and values increase downsection. The illite crystallinity index shifts at approximately 1495 mbsf; values above are consistent with detrital sources that were exposed to advanced diagenesis and anchizone metamorphic conditions; values below are smaller (higher apparent crystallinity) due to an analytical artifact. AU - Underwood, Michael B. CY - College Station, TX J2 - Affiliation (analytic): New Mexico Institute of Mining and Technology, Department of Earth and Environmental Sciences, Socorro, NM Affiliation (monographic): New Mexico Institute of Mining and Technology, Department of Earth and Environmental Sciences, Socorro, NM, United States Corporate Affiliation (monographic): Integrated Ocean Drilling Program, Expedition 348 Scientists, College Station, TX Coordinates: N331800 N331801 E1363801 E1363800 illus., incl. sects., 3 tables, sketch map Contains 35 references Research Program: IODP Integrated Ocean Drilling Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Proceedings of the Integrated Ocean Drilling Program; NanTroSEIZE Stage 3; NanTroSEIZE plate boundary deep riser 3; Expedition 348 of the riser drilling platform from and to Shimizu, Japan; Site C0002, 13 September 2013-20 January 2014, Harold Tobin, Takehiro Hirose, Demian Saffer, Sean Toczko, Lena Maeda, Yusuke Kubo, Yoshinori Sanada, Yukari Kido, Yohei Hamada, Brian Boston, Aisling Broderick, Kevin Brown, Ana Crespo-Blanc, Emilie Even, Shigeshi Fuchida, Rina Fukuchi, Sebastian Hammerschmidt, Pierre Henry, Matthew Josh, María José Jurado, Hiroko Kitajima, Manami Kitamura, Ana Maia, Makoto Otsubo, James Sample, Anja Schleicher, Hiroki Sone, Chen Song, Robert Valdez, Yuzuru Yamamoto and Kiho Yang; Integrated Ocean Drilling Program, Expedition 348 Scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program, Vol.348, 16p. Publisher: International Ocean Discovery Program, Washington, DC, United States. ISSN: 1930-1014 Copyright Information: GeoRef, Copyright 2020 American Geosciences Institute. GeoRef ID: 2017043448 DOI: 10.2204/iodp.proc.348.203.2017 KW - Chlorite Chlorite group Clay minerals Cores Crystallinity Cuttings Diagenesis Expedition 348 IODP Site C0002 Illite Integrated Ocean Drilling Program Kaolinite Kumano Basin Marine sediments Mineral assemblages NanTroSEIZE Nankai Trough North Pacific Northwest Pacific Pacific Ocean Sediments Sheet silicates Silicates Smectite West Pacific X-ray diffraction data 02 Geochemistry 06 Petrology, Sedimentary LA - English PB - Integrated Ocean Drilling Program PY - 2017 SN - 1930-1014 ST - Data report: clay mineral assemblages in cuttings from Hole C0002N, IODP Expedition 348, Nankai Trough accretionary prism T2 - Proceedings of the Integrated Ocean Drilling Program TI - Data report: clay mineral assemblages in cuttings from Hole C0002N, IODP Expedition 348, Nankai Trough accretionary prism UR - https://doi.org/10.2204/iodp.proc.348.203.2017 VL - 348 ID - 5036 ER - TY - CHAP A2 - Tobin, H., Hirose, T., Saffer, D., Toczko, S., Maeda, L., Kubo, Y., and the Expedition 348 Scientists AB - This report summarizes the results of X-ray diffraction analyses of core samples from Integrated Ocean Drilling Program Hole C0002P. Twenty-three specimens were collected from the Nankai accretionary prism over a depth interval of 2163 to 2218 meters below seafloor. Analyses of the <2 mm size fraction show considerable amounts of variation in relative mineral abundances. Percentages of clay-size smectite average 39.5 wt% (standard deviation of 17.9). Percentages of illite and kaolinite + chlorite average 32.4 and 25.1 wt%, respectively (standard deviations of 8.5 and 7.8). Values of illite/smectite expandability average 70%, and the percentage of illite in illite/smectite mixed-layer clays averages 41%. Values of illite crystallinity index are consistent with advanced levels of diagenesis to anchizone metamorphism within detrital source areas. AU - Underwood, Michael B. CY - College Station, TX J2 - Affiliation (analytic): New Mexico Institute of Mining and Technology, Department of Earth and Environmental Science, Socorro, NM Affiliation (monographic): New Mexico Institute of Mining and Technology, Department of Earth and Environmental Science, Socorro, NM, United States Corporate Affiliation (monographic): Integrated Ocean Drilling Program, Expedition 348 Scientists, College Station, TX Coordinates: N331800 N331801 E1363801 E1363800 illus., incl. 3 tables, sketch map Contains 34 references Research Program: IODP Integrated Ocean Drilling Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Proceedings of the Integrated Ocean Drilling Program; NanTroSEIZE Stage 3; NanTroSEIZE plate boundary deep riser 3; Expedition 348 of the riser drilling platform from and to Shimizu, Japan; Site C0002, 13 September 2013-20 January 2014, Harold Tobin, Takehiro Hirose, Demian Saffer, Sean Toczko, Lena Maeda, Yusuke Kubo, Yoshinori Sanada, Yukari Kido, Yohei Hamada, Brian Boston, Aisling Broderick, Kevin Brown, Ana Crespo-Blanc, Emilie Even, Shigeshi Fuchida, Rina Fukuchi, Sebastian Hammerschmidt, Pierre Henry, Matthew Josh, María José Jurado, Hiroko Kitajima, Manami Kitamura, Ana Maia, Makoto Otsubo, James Sample, Anja Schleicher, Hiroki Sone, Chen Song, Robert Valdez, Yuzuru Yamamoto and Kiho Yang; Integrated Ocean Drilling Program, Expedition 348 Scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program, Vol.348, 13p. Publisher: International Ocean Discovery Program, Washington, DC, United States. ISSN: 1930-1014 Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. GeoRef ID: 2017023487 DOI: 10.2204/iodp.proc.348.204.2017 KW - Asia Cenozoic Clastic rocks Clay minerals Continental margin Crystallinity Cuttings Diagenesis Expedition 348 Experimental studies Far East Honshu IODP Site C0002 Illite Integrated Ocean Drilling Program Japan Kii Peninsula Kumano Basin Laboratory studies Mineral composition Miocene Mudstone NanTroSEIZE Nankai Trough Neogene North Pacific Northwest Pacific Pacific Ocean Sedimentary rocks Sheet silicates Silicates Smectite Tertiary Upper Miocene West Pacific X-ray diffraction data 02 Geochemistry 06 Petrology, Sedimentary LA - English PB - Integrated Ocean Drilling Program PY - 2017 SN - 1930-1014 ST - Data report: clay mineral assemblages and illite/smectite diagenesis in cuttings from Hole C0002P, IODP Expedition 348, Nankai Trough accretionary prism T2 - Proceedings of the Integrated Ocean Drilling Program TI - Data report: clay mineral assemblages and illite/smectite diagenesis in cuttings from Hole C0002P, IODP Expedition 348, Nankai Trough accretionary prism UR - https://doi.org/10.2204/iodp.proc.348.204.2017 VL - 348 ID - 5034 ER - TY - CHAP A2 - Kinoshita, M., Tobin, H., Ashi, J., Kimura, G., Lallemant, S., Screaton, E.J., Curewitz, D., Masago, H., Moe, K.T., and the Expedition 314/315/316 Scientists AU - Expedition 315 Scientists CY - Washington, DC DO - https://doi.org/10.2204/iodp.proc.314315316.124.20090 N1 - Juichiro Ashi Siegfried Lallemant Hideki Masago Jan H. Behrmann Babette Boeckel Timothy Byrne Gerome Calves Vincent Famin Junhua Guo Yoshitaka Hashimoto Hiroki Hayashi Pierre Henry Tetsuro Hirono Samuel M. Hulme Anna Henriikka Kaksonen Kyuichi Kanagawa Toshiya Kanamatsu Achim Kopf Jonathan C. Lewis William John Likos Josep Maria Pares Hiroyuki Saito Friederike Schmidt-Schierhorn Hitoshi Tomaru Michael Underwood Wen-Lu Zhu PB - Integrated Ocean Drilling Program Management International, Inc. PY - 2009 ST - Expedition 315 Site C0002 T2 - Proceedings of the Integrated Ocean Drilling Program TI - Expedition 315 Site C0002 UR - https://doi.org/10.2204/iodp.proc.314315316.124.20090 VL - 314/315/316 ID - 13846 ER - TY - CHAP A2 - Kinoshita, M., Tobin, H., Ashi, J., Kimura, G., Lallemant, S., Screaton, E.J., Curewitz, D., Masago, H., Moe, K.T., and the Expedition 314/315/316 Scientists AU - Screaton, E.J., Kimura, G., Curewitz, D., and the Expedition 316 Scientists CY - Washington, DC DO - https://doi.org/10.2204/iodp.proc.314315316.131.2009 PB - Integrated Ocean Drilling Program Management International, Inc. PY - 2009 ST - Expedition 316 summary T2 - Proceedings of the Integrated Ocean Drilling Program, 314/315/316 TI - Expedition 316 summary UR - https://doi.org/10.2204/iodp.proc.314315316.131.2009 ID - 13126 ER - TY - CHAP A2 - Kinoshita, M., Tobin, H., Ashi, J., Kimura, G., Lallemant, S., Screaton, E.J., Curewitz, D., Masago, H., Moe, K.T., and the Expedition 314/315/316 Scientists AB - This report documents the composition of clay mineral assemblages from six sites along the Kumano transect of the Nankai Trough subduction zone offshore south-central Japan. Coring was completed during Expeditions 315 and 316 of the Integrated Ocean Drilling Program, as part of Stage 1 of the Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE). A total of 702 samples of hemipelagic mud and mudstone were analyzed by X-ray diffraction, using oriented aggregates of the clay-size fraction (<2 µm). Smectite varies the most among the clay-size constituents, ranging in relative abundance from 6% to 66%. On average, the expandability of illite/smectite mixed-layer clay is equal to 65%, and there are no progressive changes in clay mineral diagenesis over the depths sampled. We recognize a temporal pattern in composition that is consistent with what has been documented elsewhere across the Nankai subduction margin. The detrital clays shifted gradually from a smectite-rich assemblage during the late Miocene to more illite-chlorite-rich assemblages during the Pliocene and Pleistocene. Most of the compositional differences between lithostratigraphic units can be attributed to differences in their depositional ages. AU - Guo, Junhua AU - Underwood, Michael B. CY - Washington, DC J2 - Affiliation (analytic): University of Missouri, Department of Geological Sciences, Columbia, MO Affiliation (monographic): University of Missouri, Department of Geological Sciences, Columbia, MO, United States Corporate Affiliation (monographic): Integrated Ocean Drilling Program, Expedition 314 Scientists, College Station, TX Coordinates: N331400 N331400 E1364300 E1364300; N331800 N331800 E1363800 E1363800; N331300 N331300 E1364300 E1364300; N330100 N330200 E1364800 E1364800; N330114 N330119 E1364757 E1364753; N331244 N331249 E1364340 E1364336 illus., incl. sect., 4 tables, sketch map Contains 60 references Research Program: IODP Integrated Ocean Drilling Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Proceedings of the Integrated Ocean Drilling Program; Nantroseize Stage 1; investigations of seismogenesis, Nankai Trough, Japan; Expeditions 314, 315, and 316 of the riser drilling platform from and to Shingu Japan; Sites C0001-C0006, 21 September-15 November 2007 and Sites C0001 and C0002, 16 November-18 December 2007; and Sites C0004 and C0006-C0008 19 December 2007-5 February 2008, Masataka Kinoshita, Harold Tobin, Moe Kyaw Thu, Philippe Gaillot, Sylvain Bourlange, Chandong Chang, Marianne Conin, Sean Gulick, Maria José Jurado Rodriguez, Kylara M. Martin, Lisa McNeill, Ayumu Miyakawa, J. Casey Moore, Yasuyuki Nakamura, Saneatsu Saito, Dale S. Sawyer, Joanne Tudge, Yasuhiro Yamada, Juichiro Ashi, Siegfried Lallemant, Hideki Masago, Jan H. Behrmann, Babette Boeckel, Timothy Byrne, Gerome Calves, Vincent Famin, Junhua Guo, Yoshitaka Hashimoto, Hiroki Hayashi, Pierre Henry, Tetsuro Hirono, Samuel M. Hulme, Anna Henriikka Kaksonen, Kyuichi Kanagawa, Toshiya Kanamatsu, Achim Kopf, Jonathan C. Lewis, William John Likos, Josep Maria Pares, Hiroyuki Saito, Friederike Schmidt-Schierhorn, Hitoshi Tamaru, Michael B. Underwood, Wen-Lu Zhu, Gaku Kimura, Elizabeth J. Screaton, Daniel Curewitz, Frederick Chester, Olivier Fabbri, Chris Fergusson, France E. Girault, David Goldsby, Robert Harris, Fumio Inagaki, Tao Jiang, Yujin Kitamura, Matthew Knuth, Li Chunfeng, Lillemor Claesson Liljedahl, Laurent Louis, Kitty Milliken, Uisdean Nicholson, Natascha Riedinger, Arito Sakaguchi, Evan Solomon, Michael Strasser, Xin Su, Akito Tsutsumi, Kohtaro Ujiie, Asuka Yamaguchi and Xixi Zhao; Integrated Ocean Drilling Program, Expedition 314 Scientists, College Station, TX; Integrated Ocean Drilling Program, Expedition 315 Scientists, College Station, TX; Integrated Ocean Drilling Program, Expedition 316 Scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program (Online), Vol.314/315/316, 45p. Publisher: IODP Management International, Washington, DC, United States. ISSN: 1930-1014 Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. GeoRef ID: 2012021066 DOI: 10.2204/iodp.proc.314315316.202.2012 KW - Accretionary wedges Asia Boreholes Cenozoic Clay minerals Continental margin Cores Expedition 314 Expedition 315 Expedition 316 Far East Honshu IODP Site C0001 IODP Site C0002 IODP Site C0004 IODP Site C0006 IODP Site C0007 IODP Site C0008 Integrated Ocean Drilling Program Japan Kii Peninsula Kumano Basin Lithostratigraphy Marine sediments Mineral assemblages NanTroSEIZE Nankai Trough Neogene North Pacific Northwest Pacific Pacific Ocean Pleistocene Quaternary Sedimentary rocks Sediments Sheet silicates Silicates Subduction zones Tertiary West Pacific X-ray diffraction data 02 Geochemistry 12 Stratigraphy, Historical Geology and Paleoecology LA - English PB - Integrated Ocean Drilling Program Management International, Inc. PY - 2012 SN - 1930-1014 ST - Data report: clay mineral assemblages from the Nankai Trough accretionary prism and the Kumano Basin, IODP Expeditions 315 and 316, NanTroSeize Stage 1 T2 - Proceedings of the Integrated Ocean Drilling Program TI - Data report: clay mineral assemblages from the Nankai Trough accretionary prism and the Kumano Basin, IODP Expeditions 315 and 316, NanTroSeize Stage 1 UR - https://doi.org/10.2204/iodp.proc.314315316.202.2012 VL - 314/315/316 ID - 3822 ER - TY - JOUR AU - Tobin, Harold AU - Kinoshita, Masa J2 - Affiliation (analytic): New Mexico Institute of Mining and Technology, Earth and Environmental Science Department, Socorro, NM Affiliation (monographic): New Mexico Institute of Mining and Technology, Earth and Environmental Science Department, Socorro, NM, United States Coordinates: N320000 N340000 E1370000 E1363000 sect., sketch maps Contains 11 references Research Program: IODP Integrated Ocean Drilling Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Scientific Drilling, Vol.2, p.23-27. Publisher: Integrated Ocean Drilling Program Management International, Sapporo; Washington, DC, International. ISSN: 1816-8957 Copyright Information: GeoRef, Copyright 2020 American Geosciences Institute. GeoRef ID: 2007119630 URL access: Open access DOI: 10.2204/iodp.sd.2.06.2006 KW - Asia Coseismic processes Drilling Expedition 314 Expedition 315 Expedition 316 Far East Honshu Integrated Ocean Drilling Program Japan Kii Peninsula Marine geology NanTroSEIZE Nankai Trough North Pacific Northwest Pacific Ocean floors Pacific Ocean Plate boundaries Plate tectonics Programs Seismic zoning Shikoku Subduction zones Troughs Well-logging West Pacific 07 Marine Geology and Oceanography 18 Geophysics, Solid-Earth LA - English PY - 2006 SN - 1816-8957 SP - 23–27 ST - NanTroSEIZE: the IODP Nankai Trough Seismogenic Zone Experiment T2 - Scientific Drilling TI - NanTroSEIZE: the IODP Nankai Trough Seismogenic Zone Experiment UR - https://doi.org/10.2204/iodp.sd.2.06.2006 VL - 2 ID - 3885 ER - TY - CHAP A2 - Tobin, H., Hirose, T., Ikari, M., Kanagawa, K., Kimura, G., Kinoshita, M., Kitajima, H., Saffer, D., Yamaguchi, A. Eguchi, N., Maeda, L., Toczko, S., and the Expedition 358 Scientists AU - Tobin, H., Hirose, T., Ikari, M., Kanagawa, K., Kimura, G., Kinoshita, M., Kitajima, H., Saffer, D., Yamaguchi, A., Eguchi, N., Maeda, L., Toczko, S., Bedford, J., Chiyonobu, S., Colson, T.A., Conin, M., Cornard, P.H., Dielforder, A., Doan, M.-L., Dutilleul, J., Faulkner, D.R., Fukuchi, R., Guérin, G., Hamada, Y., Hamahashi, M., Hong, W.-L., Ijiri, A., Jaeger, D., Jeppson, T., Jin, Z., John, B.E., Kitamura, M., Kopf, A., Masuda, H., Matsuoka, A., Moore, G.F., Otsubo, M., Regalla, C., Sakaguchi, A., Sample, J., Schleicher, A., Sone, H., Stanislowski, K., Strasser, M., Toki, T., Tsuji, T., Ujiie, K., Underwood, M.B., Yabe, S., Yamamoto, Y., Zhang, J., Sanada, Y., Kido, Y., Le Ber, E., and Saito, S. CY - College Station, TX PB - International Ocean Discovery Program PY - 2020 ST - Expedition 358 summary. With contributions by T. Kanamatsu. SV - Proceedings of the International Ocean Discovery Program T2 - NanTroSEIZE Plate Boundary Deep Riser 4: Nankai Seismogenic/Slow Slip Megathrust TI - Expedition 358 summary. With contributions by T. Kanamatsu. UR - https://doi.org/10.14379/iodp.proc.358.101.2020 VL - 358 ID - 7143 ER - TY - CHAP A2 - Tobin, H., Hirose, T., Ikari, M., Kanagawa, K., Kimura, G., Kinoshita, M., Kitajima, H., Saffer, D., Yamaguchi, A. Eguchi, N., Maeda, L., Toczko, S., and the Expedition 358 Scientists AU - Kitajima, H., Hirose, T., Ikari, M., Kanagawa, K., Kimura, G., Kinoshita, M., Saffer, D., Tobin, H., Yamaguchi, A., Eguchi, N., Maeda, L., Toczko, S., Bedford, J., Chiyonobu, S., Colson, T.A., Conin, M., Cornard, P.H., Dielforder, A., Doan, M.-L., Dutilleul, J., Faulkner, D.R., Fukuchi, R., Guérin, G., Hamada, Y., Hamahashi, M., Hong, W.-L., Ijiri, A., Jaeger, D., Jeppson, T., Jin, Z., John, B.E., Kitamura, M., Kopf, A., Masuda, H., Matsuoka, A., Moore, G.F., Otsubo, M., Regalla, C., Sakaguchi, A., Sample, J., Schleicher, A., Sone, H., Stanislowski, K., Strasser, M., Toki, T., Tsuji, T., Ujiie, K., Underwood, M.B., Yabe, S., Yamamoto, Y., Zhang, J., Sanada, Y., Kido, Y., Le Ber, E., and Saito, S. CY - College Station, TX PB - International Ocean Discovery Program PY - 2020 ST - Site C0002. With contributions by T. Kanamatsu SV - Proceedings of the International Ocean Discovery Program T2 - NanTroSEIZE Plate Boundary Deep Riser 4: Nankai Seismogenic/Slow Slip Megathrust TI - Site C0002. With contributions by T. Kanamatsu UR - https://doi.org/10.14379/iodp.proc.358.103.2020 VL - 358 ID - 7145 ER - TY - CHAP A2 - Tobin, H., Hirose, T., Ikari, M., Kanagawa, K., Kimura, G., Kinoshita, M., Kitajima, H., Saffer, D., Yamaguchi, A. Eguchi, N., Maeda, L., Toczko, S., and the Expedition 358 Scientists AU - Kimura, G., Hirose, T., Ikari, M., Kanagawa, K., Kinoshita, M., Kitajima, H., Saffer, D., Tobin, H., Yamaguchi, A., Eguchi, N., Maeda, L., Toczko, S., Bedford, J., Chiyonobu, S., Colson, T.A., Conin, M., Cornard, P.H., Dielforder, A., Doan, M.-L., Dutilleul, J., Faulkner, D.R., Fukuchi, R., Guérin, G., Hamada, Y., Hamahashi, M., Hong, W.-L., Ijiri, A., Jaeger, D., Jeppson, T., Jin, Z., John, B.E., Kitamura, M., Kopf, A., Masuda, H., Matsuoka, A., Moore, G.F., Otsubo, M., Regalla, C., Sakaguchi, A., Sample, J., Schleicher, A., Sone, H., Stanislowski, K., Strasser, M., Toki, T., Tsuji, T., Ujiie, K., Underwood, M.B., Yabe, S., Yamamoto, Y., Zhang, J., Sanada, Y., Kido, Y., Le Ber, E., and Saito, S. CY - College Station, TX PB - International Ocean Discovery Program PY - 2020 ST - Site C0025. With contributions by T. Kanamatsu SV - Proceedings of the International Ocean Discovery Program T2 - NanTroSEIZE Plate Boundary Deep Riser 4: Nankai Seismogenic/Slow Slip Megathrust TI - Site C0025. With contributions by T. Kanamatsu UR - https://doi.org/10.14379/iodp.proc.358.105.2020 VL - 358 ID - 7147 ER - TY - CHAP A2 - Wallace, L.M., Saffer, D.M., Barnes, P.M., Pecher, I.A., Petronotis, K.E., LeVay, L.J., and the Expedition 372/375 Scientists AB - X-ray diffraction (XRD) was an important analytical component of International Ocean Discovery Program (IODP) Expeditions 372 and 375 in the Hikurangi subduction zone. This report documents the composition of standard mineral mixtures that we used to calibrate computations of mineral abundance in bulk powder and clay-sized fractions of the sediment. Shipboard analyses of the bulk powders were completed on the R/V JOIDES Resolution using a Bruker D4 Endeavor diffractometer, and reduction of those data utilized two types of software (MacDiff and Bruker DIFFRAC.EVA). To evaluate precision more rigorously, we replicated the bulk powder analyses at the New Mexico Bureau of Geology and Mineral Resources (New Mexico Tech; United States) using a Panalytical X'Pert Pro diffractometer, and MacDiff software was used for data reduction. The relation between peak area (integrated intensity) and weight percent in the bulk powder mixtures is constrained in two ways: a matrix of normalization factors, derived by singular value decomposition (SVD), and polynomial regression equations. Differences in results between the two computational methods are trivial. Absolute errors (known weight percent -- computed weight percent) average less than 3 wt%, which is a level of accuracy more than sufficient to satisfy the scientific goals of shipboard XRD. The clay-sized standards were analyzed only at New Mexico Tech, and MacDiff software was used for data reduction. For computations of weight percent using those raw data, we tested three computations: Biscaye weighting factors, SVD normalization factors, and regression equations. Results using the SVD normalization factors and regression equations are significantly more accurate than those using Biscaye weighting factors. AU - Underwood, Michael B. AU - Lawler, Nicolette AU - McNamara, Kelsey CY - College Station, TX J2 - Affiliation (analytic): New Mexico Institute of Mining and Technology, Department of Earth and Environmental Science, Socorro, NM Affiliation (monographic): New Mexico Institute of Mining and Technology, Department of Earth and Environmental Science, Socorro, NM, United States Corporate Affiliation (monographic): International Ocean Discovery Program, Expedition 372 Scientists Coordinates: S390300 S384100 E1791600 E1782800 illus., incl. 2 tables Contains 40 references Research Program: IODP2 International Ocean Discovery Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Proceedings of the International Ocean Discovery Program; Hikurangi subduction margin coring, logging, and observatories; Expedition 372B/375 of the R/V JOIDES Resolution; Timaru, New Zealand, to Auckland, New Zealand; Sites U1518-U1520 and U1526; March-5 May 2018, Laura M. Wallace, Demian M. Saffer, Philip M. Barnes, Ingo A. Pecher, Katerina E. Petronotis, Leah J. LeVay, Sylvain M. Bourlange, Morgane M. Y. Brunet, Sebastian Cardona, Michael B. Clennell, Ann E. Cook, Brandon Dugan, Judith Elger, Davide Gamboa, Aggeliki Georgiopoulou, Shuoshuo Han, Katja U. Heeschen, Hu Gaowei, Gil Young Kim, Hiroaki Koge, Karina S. Machado, David D. McNamara, Gregory F. Moore, Joshu J. Mountjoy, Michael A. Nole, Satoko Owari, Matteo Paganoni, Paula S. Rose, Elizabeth J. Screaton, Uma Shankar, Marta E. Torres, Wang Xiujuan, Hung-Yu Wu, Rebecca E. Bell, Martin P. Crundwell, Christie H. Engelmann de Oliveira, Ake Fagereng, Patrick M. Fulton, Annika Greve, Robert N. Harris, Yoshitaka Hashimoto, Andre Hüpers, Matt J. Ikari, Yoshihiro Ito, Hiroko Kitajima, Steffen Kutterolf, Hikweon Lee, Li Xuesen, Luo Min, Pierre R. Malie, Francesca Meneghini, Julia K. Morgan, Atsushi Noda, Hannah S. Rabinowitz, Heather M. Savage, Claire L. Shepherd, Srisharan Shreedharan, Evan A. Solomon, Michael B. Underwood, Wang Maomao and Adam D. Woodhouse; International Ocean Discovery Program, Expedition 372 Scientists; International Ocean Discovery Program, Expedition 375 Scientists. Proceedings of the International Ocean Discovery Program, Expedition Reports, Vol.372B/375, 24p. Publisher: International Ocean Discovery Program, Washington, DC, United States. ISSN: 2377-3189 Copyright Information: GeoRef, Copyright 2021 American Geosciences Institute. GeoRef ID: 2021016042 DOI: 10.14379/iodp.proc.372B375.201.2020 KW - Accuracy Clay minerals Expeditions 372/375 International Ocean Discovery Program Marine sediments Methods Mineral assemblages Mineral composition Pacific Ocean Powder method Regression analysis Sediments Sheet silicates Silicates South Pacific Southwest Pacific Standard materials Statistical analysis West Pacific X-ray analysis X-ray diffraction analysis 02 Geochemistry 06 Petrology, Sedimentary LA - English PB - International Ocean Discovery Program PY - 2020 SN - 2377-3189 ST - Data report: standard mineral mixtures, normalization factors, and determination of error for quantitative X-ray diffraction analyses of bulk powders and clay-sized mineral assemblages SV - Proceedings of the International Ocean Discovery Program T2 - Hikurangi Subduction Margin Coring, Logging, and Observatories TI - Data report: standard mineral mixtures, normalization factors, and determination of error for quantitative X-ray diffraction analyses of bulk powders and clay-sized mineral assemblages UR - https://doi.org/10.14379/iodp.proc.372B375.201.2020 VL - 372B/375 ID - 12555 ER - TY - JOUR AB - The Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) program is a coordinated, multi-expedition drilling project designed to investigate fault mechanics and seismogenesis along subduction megathrusts through direct sampling, in situ measurements, and long-term monitoring in conjunction with allied laboratory and numerical modeling studies. The fundamental scientific objectives of the NanTroSEIZE project include characterizing the nature of fault slip and strain accumulation, fault and wall rock composition, fault architecture, and state variables throughout the active plate boundary system. Site C0002 is in the Kumano forearc basin above the seismogenic, and presumably locked, portion of the plate boundary thrust system. The Kumano Basin sedimentary sequence and uppermost part of the accretionary prism were drilled, logged, and sampled during Integrated Ocean Drilling Program Expeditions 314 (logging while drilling [LWD] to 1401.5 mbsf), 315 (coring to 1057 mbsf), 338 (LWD to 2005 mbsf and coring to 1120 mbsf), and 348 (LWD to 3058.5 mbsf, with limited coring from 2163-2218.5 mbsf). International Ocean Discovery Program (IODP) Expedition 358 aims to reach and sample the megasplay fault/plate boundary fault at Site C0002 by extending the riser borehole (Hole C0002P) established during previous Integrated Ocean Drilling Program NanTroSEIZE expeditions. Evidence suggests that the drilling target at the megasplay will reach a region where megathrust seismogenic processes are active. A new borehole will be "kicked off" from Hole C0002P and will be extended to ∼5000 meters below seafloor (mbsf) and then across the high-amplitude seismic reflector identified as the main plate boundary fault. Continuous LWD with drilling mud gas analysis and limited coring at the anticipated plate boundary fault depth, will leave the cased borehole completed at ∼5200 mbsf. A suite of analyses on cuttings, mud gases, and limited cores will address the four primary scientific objectives: (1) determine the composition, stratigraphy, and deformational history of the Miocene accretionary prism; (2) reconstruct its thermal, diagenetic, and metamorphic history; (3) determine horizontal stress orientations and magnitudes; and (4) investigate the mechanical and hydrological properties of the upper plate of the seismogenic plate boundary. The main scientific objective is to log and sample the hanging wall, the fault zone, and into the footwall. The main contingency plan is to leave a cased borehole in good condition for future installation of a long-term borehole monitoring system (LTBMS). These operations will extend drilling conducted during Integrated Ocean Drilling Program Expeditions 326, 338, and 348. The entire expedition will cover a period of 164 days, beginning on 7 October 2018 and ending on 21 March 2019. AU - Tobin, Harold AU - Kimura, Gaku AU - Kinoshita, Masataka AU - Toczko, Sean AU - Maeda, Lena J2 - Affiliation (analytic): University of Wisconsin at Madison, Department of Geoscience, Madison, WI Coordinates: N331800 N331801 E1363801 E1363800 Contains 9 references Research Program: IODP Integrated Ocean Drilling Program; IODP2 International Ocean Discovery Program Document Type: Monograph Bibliographic Level: Monograph Source Note: Scientific Prospectus (International Ocean Discovery Program), Vol.358, 8p. Publisher: International Ocean Discovery Program, College Station, TX, United States. ISSN: 2332-1385 Copyright Information: GeoRef, Copyright 2020 American Geosciences Institute. GeoRef ID: 2018061380 URL access: Open access DOI: 10.14379/iodp.sp.358.2018 KW - Asia Boreholes Continental margin Crust Earthquakes Expedition 358 Far East Fault planes Fault zones Faults Honshu IODP Site C0002 Integrated Ocean Drilling Program International Ocean Discovery Program Japan Kii Peninsula Kumano Basin Measurement-while-drilling Megathrust earthquakes NanTroSEIZE Nankai Trough North Pacific Northwest Pacific Oceanic crust Pacific Ocean Plate boundaries Plate tectonics Seismic zoning West Pacific 18 Geophysics, Solid-Earth 19 Geophysics, Seismology LA - English PY - 2018 SN - 2332-1385 ; ST - Expedition 358 Scientific Prospectus: NanTroSEIZE Plate Boundary Deep Riser 4: Nankai Seismogenic/Slow Slip Megathrust T2 - International Ocean Discovery Program TI - Expedition 358 Scientific Prospectus: NanTroSEIZE Plate Boundary Deep Riser 4: Nankai Seismogenic/Slow Slip Megathrust UR - https://doi.org/10.14379/iodp.sp.358.2018 ID - 5263 ER -