Proc. IODP, 327, Site U1362

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Chapter contents Site summary Background and objectives Operations Transit from Victoria, British Columbia (Canada), to Site U1362 Site U1362 Hole U1362A Stage 1 Hole U1362B Stage 1 Hole U1362A Stage 2 Hole U1362B Stage 2 Hole U1362A Stage 3 Hole U1362A wireline logging and packer pumping test Hole U1362A CORK wellhead and casing deployment Hole U1362A CORK instrument string deployment Hole U1362B Stage 3 Hole U1362B pumping test and tracer injection experiment Hole U1362B CORK wellhead and casing deployment Hole U1362B CORK instrument string deployment Petrology, hard rock geochemistry, and structural geology Lithologic units Igneous petrology Basement alteration Hard rock geochemistry Structural geology Microbiology Physical properties Magnetic susceptibility Gamma ray attenuation density Natural gamma radiation Thermal conductivity P-wave velocity Moisture and density Paleomagnetism Downhole measurements Logging tool string Operations Data processing Depth shifting Data quality Preliminary results Hydrologic experiments Hole U1362A Hole U1362B Borehole observatories Hole U1362A Hole U1362B References Figures F1. Site maps. F2. Seismic profiles. F3. Hole U1362A seafloor installation. F4. Hole U1362B seafloor installation. F5. Lithostratigraphic log. F6. Curved glassy pillow fragment margin. F7. Glassy chilled pillow margin. F8. Pillow lava basalt. F9. Partially to completely replaced phenocrysts. F10. Sheet flow textures. F11. Pale gray patchy background alteration. F12. Saponite replacement. F13. Basalt-hyaloclastite breccia. F14. Cataclastic zone. F15. Filled vesicles. F16. Multilayered vesicle. F17. Secondary minerals in hydrothermal veins. F18. Multifilled veins from Hole U1362A basalt. F19. Anhydrite present as a fibrous vein. F20. Gray halos. F21. Dark green halo. F22. Dark gray halo with orange spots. F23. Multilayer halos. F24. Alteration halo associations with host rock. F25. TiO₂ vs. Zr. F26. Major element abundance vs. Mg#. F27. Trace element abundances vs. Mg#. F28. ICP-AES analyses vs. depth. F29. Vein and fracture orientation. F30. True dip orientations of veins and fractures. F31. Dip distribution of haloed and nonhaloed veins. F32. Composite 360° whole-round image. F33. P-wave velocities and porosity. F34. Physical properties. F35. Thermal conductivity. F36. P-wave velocity vs. porosity. F37. Demagnetization of characteristic samples. F38. Remanent magnetization intensity and inclination. F39. Wireline logging measurements. F40. Total gamma ray vs. K, Th, and U. F41. Potassium oxide, caliper, and potassium. F42. Caliper and potassium. F43. NGR and gamma ray. F44. UBI images. F45. Caliper readings. F46. Pressure and temperature records, Hole U1362A. F47. Pressure and temperature records, Hole U1362B. F48. Hole U1362A CORK completion. F49. Hole U1362B CORK completion. Tables T1. Operational depths, Hole U1362A. T2. Operational depths, Hole U1362B. T3. Coring summary. T4. Lithologic units. T5. XRD analyses. T6. SEM analyses of epidote. T7. ICP-AES analyses. T8. Microsphere density. T9. Physical property data. T10. Remanent magnetization intensity and inclination. T11. Temperature logger depths, Hole U1362A. T12. OsmoSampler types and depths, Hole U1362A. T13. Fluid sampling intake depths, Hole U1362A. T14. Temperature logger depths, Hole U1362B. T15. OsmoSampler types and depths, Hole U1362B. T16. Fluid sampling intake depths, Hole U1362B. PDF file			Previous \| Next doi:10.2204/iodp.proc.327.103.2011 References Acton, G.D., Okada, M., Clement, B.M., Lund, S.P., and Williams, T., 2002. Paleomagnetic overprints in ocean sediment cores and their relationship to shear deformation caused by piston coring. J. Geophys. Res., [Solid Earth], 107(B4):2067. doi:10.1029/2001JB000518 Banerjee, N.R., Gillis, K.M., and Muehlenbachs, K., 2000. Discovery of epidosites in a modern oceanic setting, the Tonga forearc. Geology, 28(2):151–154. doi:10.1130/0091-7613(2000)28<151:DOEIAM>2.0.CO;2 Bartetzko, A., Pezard, P., Goldberg, D., Sun, Y.-F., and Becker, K., 2001. Volcanic stratigraphy of DSDP/ODP Hole 395A: an interpretation using well-logging data. Mar. Geophys. Res., 22(2):111–127. doi:10.1023/A:1010359128574 Becker, K., and Fisher, A.T., 2008. Borehole packer tests at multiple depths resolve distinct hydrologic intervals in 3.5-Ma upper oceanic crust on the eastern flank of Juan de Fuca Ridge. J. Geophys. Res., [Solid Earth], 113(B7):B07105. doi:10.1029/2007JB005446 Davis, E.E., Chapman, D.S., Mottl, M.J., Bentkowski, W.J., Dadey, K., Forster, C., Harris, R., Nagihara, S., Rohr, K., Wheat, G., and Whiticar, M., 1992. FlankFlux: an experiment to study the nature of hydrothermal circulation in young oceanic crust. Can. J. Earth Sci., 29(5):925–952. Davis, E.E., Fisher, A.T., Firth, J.V., et al., 1997. Proc. ODP, Init. Repts., 168: College Station, TX (Ocean Drilling Program). doi:10.2973/odp.proc.ir.168.1997 Expedition 301 Scientists, 2005. Methods. In Fisher, A.T., Urabe, T., Klaus, A., and the Expedition 301 Scientists, Proc. IODP, 301: College Station, TX (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.301.105.2005 Expedition 324 Scientists, 2010. Testing plume and plate models of ocean plateau formation at Shatsky Rise, northwest Pacific Ocean. IODP Prel. Rept., 324. doi:10.2204/iodp.pr.324.2010 Fisher, A.T., Davis, E.E., and Becker, K., 2008. Borehole-to-borehole hydrologic response across 2.4 km in the upper oceanic crust: implications for crustal-scale properties. J. Geophys. Res., [Solid Earth], 113(B7):B07106. doi:10.1029/2007JB005447 Fisher, A.T., Tsuji, T., and Gamage, K., 2010. Juan de Fuca Ridge-Flank Hydrogeology: the hydrogeologic architecture of basaltic oceanic crust: compartmentalization, anisotropy, microbiology, and crustal-scale properties on the eastern flank of Juan de Fuca Ridge, eastern Pacific Ocean. IODP Sci. Prosp., 327. doi:10.2204/iodp.sp.327.2010 Fisher, A.T., Urabe, T., Klaus, A., and the Expedition 301 Scientists, 2005. Proc. IODP, 301: College Station, TX (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.301.2005 Hutnak, M., Fisher, A.T., Zühlsdorff, L., Spiess, V., Stauffer, P.H., and Gable, C.W., 2006. Hydrothermal recharge and discharge guided by basement outcrops on 0.7–3.6 Ma seafloor east of the Juan de Fuca Ridge: observations and numerical models. Geochem., Geophys., Geosyst., 7(7):Q07O02. doi:10.1029/2006GC001242 Kirschvink, J.L., 1980. The least-squares line and plane and the analysis of palaeomagnetic data. Geophys. J. R. Astron. Soc., 62(3):699–718. doi:10.1111/j.1365-246X.1980.tb02601.x Laverne, C., Belarouchi, A., and Honnorez, J., 1996. Alteration mineralogy and chemistry of the upper oceanic crust from Hole 896A, Costa Rica rift. In Alt, J.C., Kinoshita, H., Stokking, L.B., and Michael, P.J. (Eds.), Proc. ODP, Sci. Results, 148: College Station, TX (Ocean Drilling Program), 151–170. doi:10.2973/odp.proc.sr.148.127.1996 Rohr, K.M.M., 1994. Increase of seismic velocities in upper oceanic crust and hydrothermal circulation in the Juan de Fuca plate. Geophys. Res. Lett., 21(19):2163–2166. doi:10.1029/94GL01913 Shipboard Scientific Party, 1993. Site 894. In Gillis, K., Mével, C, Allan, J., et al., Proc. ODP, Init. Repts., 147: College Station, TX (Ocean Drilling Program), 45–108. doi:10.2973/odp.proc.ir.147.103.1993 Shipboard Scientific Party, 1997. Rough basement transect (Sites 1026 and 1027). In Davis, E.E., Fisher, A.T., Firth, J.V., et al., Proc. ODP, Init. Repts., 168: College Station, TX (Ocean Drilling Program), 101–160. doi:10.2973/odp.proc.ir.168.105.1997 Teagle, D.A.H., Alt, J.C., Bach, W., Halliday, A.N., and Erzinger, J., 1996. Alteration of upper ocean crust in a ridge-flank hydrothermal upflow zone: mineral, chemical, and isotopic constraints from Hole 896A. In Alt, J.C., Kinoshita, H., Stokking, L.B., and Michael, P.J. (Eds.), Proc. ODP, Sci. Results, 148: College Station, TX (Ocean Drilling Program), 119–150. doi:10.2973/odp.proc.sr.148.113.1996 Teagle, D.A.H., Alt, J.C., Umino, S., Miyashita, S., Banerjee, N.R., Wilson, D.S., and the Expedition 309/312 Scientists, 2006. Proc. IODP, 309/312: Washington, DC (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.309312.2006 Theis, C.V., 1935. The relation between the lowering of the piezometric surface and the rate and duration of discharge of a well using ground-water storage. Trans., Am. Geophys. Union, 16:519–564. Thompson, R., and Oldfield, F., 1986. Environmental Magnetism: London (Allen and Unwin). Tsuji, T., and Iturrino, G.J., 2008. Velocity-porosity relationships in oceanic basalt from eastern flank of the Juan de Fuca Ridge: the effect of crack closure on seismic velocity. Explor. Geophys., 39(1):41–51. doi:10.1071/EG08001 Underwood, M.B., Hoke, K.D., Fisher, A.T., Davis, E.E., Giambalvo, E., Zühlsdorff, L., and Spinelli, G.A., 2005. Provenance, stratigraphic architecture, and hydrogeologic influence of turbidites on the mid-ocean ridge flank of northwestern Cascadia Basin, Pacific Ocean. J. Sediment. Res., 75(1):149–164. doi:10.2110/jsr.2005.012 Wheat, C.G., Jannasch, H.W., Fisher, A.T., Becker, K., Sharkey, J., and Hulme, S., 2010. Subseafloor seawater-basalt-microbe reactions: continuous sampling of borehole fluids in a ridge flank environment. Geochem., Geophys., Geosyst., 11(7):Q07011. doi:10.1029/2010GC003057 Wilkens, R.H., Fryer, G.J., and Karsten, J., 1991. Evolution of porosity and seismic structure of upper oceanic crust: importance of aspect ratios. J. Geophys. Res., [Solid Earth], 96(B11):17891–17995. doi:10.1029/91JB01454 Zühlsdorff, L., Hutnak, M., Fisher, A.T., Spiess, V., Davis, E.E., Nedimovic, M., Carbotte, S., Villinger, H., and Becker, K., 2005. Site surveys related to IODP Expedition 301: ImageFlux (SO149) and RetroFlux (TN116) expeditions and earlier studies. In Fisher, A.T., Urabe, T., Klaus, A., and the Expedition 301 Scientists, Proc. IODP, 301: College Station, TX (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.301.102.2005 Top of page \| Previous \| Next

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