Proc. IODP, 346, Site U1430

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Chapter contents Background and objectives Operations Transit to Site U1430 Hole U1430A Hole U1430B Hole U1430C Lithostratigraphy Unit I Unit II Unit III Unit IV Summary and discussion Biostratigraphy Calcareous nannofossils Radiolarians Diatoms Planktonic foraminifers Benthic foraminifers Mudline samples Geochemistry Sample summary Alkalinity, ammonium, and phosphate Calcium, magnesium, and strontium Sulfate Volatile hydrocarbons Carbonate and organic carbon The problem and a solution pH Manganese and iron Sediment color Barium Potassium Boron and lithium Silica Chlorinity and sodium Bromide Preliminary conclusions Paleomagnetism Paleomagnetic samples and measurements Natural remanent magnetization and magnetic susceptibility Magnetostratigraphy Physical properties Thermal conductivity Moisture and density Magnetic susceptibility Natural gamma radiation Compressional wave velocity Vane shear stress Diffuse reflectance spectroscopy Summary Downhole measurements Logging operations Logging data quality Logging unit FMS images In situ temperature and heat flow Stratigraphic correlation and sedimentation rates Age model and sedimentation rates References Figures F1. Bathymetric map. F2. Lithologic summary, Hole U1430A. F3. Lithologic summary, Hole U1430B. F4. Lithologic summary, Hole U1430C. F5. Tephra layer distribution. F6. Hole-to-hole lithostratigraphic correlation. F7. XRD peak intensity. F8. Subunit IA. F9. Laminations and color banding. F10. Subunit IB. F11. Glauconite. F12. Subunit IIA. F13. Subunit IIB. F14. Subunit IIIA. F15. Subunit IIIB. F16. Unit IV. F17. XRD diffractograms. F18. Laminated Miocene sediment. F19. Distinctive yellowish sediment layer. F20. Lithologic changes, Section 346-U1430A-24H-5. F21. Variations in diatom content. F22. Glauconite-quartz sandstone. F23. Glauconite-dolomite sandstone. F24. Glauconite sandstone. F25. Tephra alteration. F26. Calcareous and siliceous microfossil biozonation. F27. Age-depth profile. F28. Siliceous and calcareous microfossil distribution. F29. Dark and light diatom ooze laminations. F30. Benthic foraminifer distribution. F31. Calcareous agglutinated foraminifers. F32. Calcareous agglutinated foraminifers. F33. Dissolved alkalinity, NH₄⁺, and PO₄^3– profiles. F34. Ca, Mg, and Sr profiles. F35. SO₄^2– concentrations. F36. Headspace CH₄ concentrations. F37. Solid-phase contents. F38. Mn and Fe profiles. F39. B, Li, and Si profiles. F40. Cl^–, Na, and Br^– profiles. F41. 20 mT AF demagnetization. F42. AF demagnetization results. F43. Physical properties. F44. Correlation between NGR and HSGR logs. F45. Discrete bulk density, grain density, porosity, water content, and shear strength. F46. Color reflectance. F47. Reflectance data comparison. F48. Logging operations summary. F49. Downhole logs and logging units. F50. NGR logs, FMS images, and logging units. F51. Correlation of downhole logs and FMS images. F52. Heat flow calculations. F53. Core alignment. F54. Age model and sedimentation rates. Tables T1. Hole summary. T2. Visible tephra layers. T3. XRD analysis. T4. Microfossil bioevents. T5. Calcareous nannofossils. T6. Radiolarians. T7. Diatoms. T8. Planktonic foraminifers. T9. Benthic foraminifers. T10. Interstitial water chemistry. T11. Headspace gas concentrations. T12. CaCO₃, TC, TOC, and TN. T13. FlexIT tool data. T14. Core disturbance intervals. T15. NRM inclination, declination, and intensity. T16. Polarity boundaries. T17. APCT-3 temperature profiles. T18. Vertical offsets. T19. Splice intervals. T20. CCSF-C depth scale. T21. Tie points. PDF file			Previous \| Next doi:10.2204/iodp.proc.346.110.2015 References Baker, P.A., and Kastner, M., 1981. Constraints on the formation of sedimentary dolomite. Science, 213(4504):214–216. doi:10.1126/science.213.4504.214 Baldauf, J.G., and Barron, J.A., 1980. Actinocyclus ingens var. nodus: a new, stratigraphically useful diatom of the circum-North Pacific. Micropaleontology, 26(1):103–110. doi:10.2307/1485279 Blum, P., 1997. Physical properties handbook: a guide to the shipboard measurement of physical properties of deep-sea cores. ODP Tech. 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Palaeogeogr., Palaeoclimatol., Palaeoecol., 108(3–4):487–508. doi:10.1016/0031-0182(94)90248-8 Tada, R., Murray, R.W., Alvarez Zarikian, C.A., Anderson, W.T., Jr., Bassetti, M.-A., Brace, B.J., Clemens, S.C., da Costa Gurgel, M.H., Dickens, G.R., Dunlea, A.G., Gallagher, S.J., Giosan, L., Henderson, A.C.G., Holbourn, A.E., Ikehara, K., Irino, T., Itaki, T., Karasuda, A., Kinsley, C.W., Kubota, Y., Lee, G.S., Lee, K.E., Lofi, J., Lopes, C.I.C.D., Peterson, L.C., Saavedra-Pellitero, M., Sagawa, T., Singh, R.K., Sugisaki, S., Toucanne, S., Wan, S., Xuan, C., Zheng, H., and Ziegler, M., 2015a. Expedition 346 summary. In Tada, R., Murray, R.W., Alvarez Zarikian, C.A., and the Expedition 346 Scientists, Proc. IODP, 346: College Station, TX (Integrated Ocean Drilling Program). doi:10.2204/iodp.proc.346.101.2015 Tada, R., Murray, R.W., Alvarez Zarikian, C.A., Anderson, W.T., Jr., Bassetti, M.-A., Brace, B.J., Clemens, S.C., da Costa Gurgel, M.H., Dickens, G.R., Dunlea, A.G., Gallagher, S.J., Giosan, L., Henderson, A.C.G., Holbourn, A.E., Ikehara, K., Irino, T., Itaki, T., Karasuda, A., Kinsley, C.W., Kubota, Y., Lee, G.S., Lee, K.E., Lofi, J., Lopes, C.I.C.D., Peterson, L.C., Saavedra-Pellitero, M., Sagawa, T., Singh, R.K., Sugisaki, S., Toucanne, S., Wan, S., Xuan, C., Zheng, H., and Ziegler, M., 2015b. Methods. In Tada, R., Murray, R.W., Alvarez Zarikian, C.A., and the Expedition 346 Scientists, Proc. IODP, 346: College Station, TX (Integrated Ocean Drilling Program). doi:10.2204/iodp.proc.346.102.2015 Tada, R., Murray, R.W., Alvarez Zarikian, C.A., Anderson, W.T., Jr., Bassetti, M.-A., Brace, B.J., Clemens, S.C., da Costa Gurgel, M.H., Dickens, G.R., Dunlea, A.G., Gallagher, S.J., Giosan, L., Henderson, A.C.G., Holbourn, A.E., Ikehara, K., Irino, T., Itaki, T., Karasuda, A., Kinsley, C.W., Kubota, Y., Lee, G.S., Lee, K.E., Lofi, J., Lopes, C.I.C.D., Peterson, L.C., Saavedra-Pellitero, M., Sagawa, T., Singh, R.K., Sugisaki, S., Toucanne, S., Wan, S., Xuan, C., Zheng, H., and Ziegler, M., 2015c. Site U1422. In Tada, R., Murray, R.W., Alvarez Zarikian, C.A., and the Expedition 346 Scientists, Proc. IODP, 346: College Station, TX (Integrated Ocean Drilling Program). doi:10.2204/iodp.proc.346.103.2015 Tada, R., Murray, R.W., Alvarez Zarikian, C.A., Anderson, W.T., Jr., Bassetti, M.-A., Brace, B.J., Clemens, S.C., da Costa Gurgel, M.H., Dickens, G.R., Dunlea, A.G., Gallagher, S.J., Giosan, L., Henderson, A.C.G., Holbourn, A.E., Ikehara, K., Irino, T., Itaki, T., Karasuda, A., Kinsley, C.W., Kubota, Y., Lee, G.S., Lee, K.E., Lofi, J., Lopes, C.I.C.D., Peterson, L.C., Saavedra-Pellitero, M., Sagawa, T., Singh, R.K., Sugisaki, S., Toucanne, S., Wan, S., Xuan, C., Zheng, H., and Ziegler, M., 2015d. Site U1423. In Tada, R., Murray, R.W., Alvarez Zarikian, C.A., and the Expedition 346 Scientists, Proc. IODP, 346: College Station, TX (Integrated Ocean Drilling Program). doi:10.2204/iodp.proc.346.104.2015 Tamaki, K., Pisciotto, K., Allan, J., et al., 1990. Proc. ODP, Init. Repts., 127: College Station, TX (Ocean Drilling Program). doi:10.2973/odp.proc.ir.127.1990 Xuan, C., and Channell, J.E.T., 2009. UPmag: MATLAB software for viewing and processing U channel or other pass-through paleomagnetic data. Geochem., Geophys., Geosyst., 10(10):Q10Y07. doi:10.1029/2009GC002584 Yanagisawa, Y., and Akiba, F., 1998. Refined Neogene diatom biostratigraphy for the northwest Pacific around Japan, with an introduction of code numbers for selected diatom biohorizons. Chishitsugaku Zasshi, 104(6):395–414. doi:10.5575/geosoc.104.395 Top of page \| Previous \| Next

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