Proc. IODP, 314/315/316, Expedition 316 Site C0004

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Chapter contents Background and objectives Operations Positioning on Site C0004 Hole C0004C Hole C0004D Lithology Unit I (slope facies) Unit II (accretionary prism) Unit III (structurally bounded package) Unit IV (underthrust slope facies) Structural geology Structures in Unit I (upper slope sediments) Structures in Unit II (prism) Structures in Unit III (fault-bounded unit) Structures in Unit IV (underthrust slope sediments) Discussion Biostratigraphy Calcareous nannofossils Other microfossil groups Summary Paleomagnetism Natural remanent magnetization and magnetic susceptibility Paleomagnetic stability tests and general polarity sequences Paleomagnetically determined sedimentation rates for Hole C0004C Anisotropy of magnetic susceptibility Inorganic geochemistry Salinity, chloride, and sodium Pore fluid constituents controlled by microbially mediated reactions Major cations (Ca, Mg, and K) Minor elements (B, Li, H₄SiO₄, Sr, and Ba) Trace elements (Rb, Cs, V, Cu, Zn, Mo, Pb, and U) δ¹⁸O Summary and discussion Organic geochemistry Hydrocarbon gas composition Sediment carbon, nitrogen, and sulfur composition Microbiology and biogeochemistry Sample processing Cell abundance Physical properties Density and porosity Electrical conductivity, P-wave velocity, and anisotropy Thermal conductivity In situ temperature Heat flow Shear strength Color spectrometry Magnetic susceptibility Natural gamma ray Integration with logging-while-drilling data References Figures F1. Hole locations. F2. 3-D seismic profile. F3. Core recovery and sand and silt distribution. F4. Unit I. F5. Debris flow sediments. F6. XRD data. F7. Unconformity between Units I and II. F8. XRF Ca and Fe. F9. Volcanic ash occurrence. F10. Cubic-form pyrite. F11. Thin sandy/silty beds, Unit IV. F12. Red-brown organic detritus. F13. CT number. F14. Bedding dip and deformation. F15. Bedding surfaces. F16. Normal faults. F17. Projections of normal faults. F18. Faults, shear zones, and veins. F19. CT images of shear zones. F20. Structure in splay fault zone. F21. Fractured rock. F22. Fracture surfaces. F23. Fractured and brecciated mudstone and ash. F24. CT image of fault breccia. F25. Fault and drilling-induced breccia. F26. Microbreccia bounded by fault breccia. F27. Bedding in underthrust sediments. F28. Faults in underthrust sediments. F29. Depth vs. age. F30. Nannofossil biostratigraphic ages. F31. Radiolarian zones. F32. Magnetic susceptibility and NRM. F33. AF and thermal demagnetization. F34. Magnetic inclination and declination. F35. Nannofossil events. F36. Magnetic inclination, polarity, and biostratigraphy. F37. Salinity, Cl, Na, and Na/Cl. F38. SO₄, alkalinity, Ca, Mg, pH, Ba, SO₄, and CH₄. F39. NH₄, PO₄, Br, and Mn. F40. Li, H₄SiO₄, B, Sr, K, Rb, and Cs. F41. Fe, Cu, Zn, and V. F42. Mo, Pb, U, and Y. F43. δ¹⁸O profile. F44. Changes in alkalinity and sulfate. F45. Dissolved ethane and methane. F46. CaCO₃, TOC, TN, C/N, and TS. F47. Microbial cell abundance. F48. SYBR Green I–stained cells. F49. Density and porosity. F50. Discrete sample measurements. F51. Thermal data. F52. Temperature time series. F53. Shear strength. F54. L, a, and b*. F55. Magnetic susceptibility. F56. NGR. F57. Hole correlations. Tables T1. Coring summary, Hole C0004C. T2. Coring summary, Hole C0004D. T3. Lithologic summary. T4. XRD data. T5. XRD mineralogy. T6. Calcareous nannofossil range chart, Hole C0004C. T7. Calcareous nannofossil range chart, Hole C0004D. T8. Nannofossil events, Hole C0004C. T9. Nannofossil events, Hole C0004D. T10. Paleomagnetic and biostratigraphic age datums. T11. AMS measurements. T12. Uncorrected geochemistry. T13. Uncorrected minor elements. T14. Uncorrected trace elements and δ¹⁸O. T15. Corrected geochemistry. T16. Corrected minor elements. T17. Headspace hydrocarbon gases. T18. Headspace gas composition. T19. CaCO₃, TOC, TN, C/N, and TS. T20. Sample depth and processing. T21. Thermal conductivity. T22. APCT3 temperature. T23. Correlation and depth shifts. PDF file			Previous \| Next doi:10.2204/iodp.proc.314315316.133.2009 References Bullard, E.C., 1939. Heat flow in South Africa. Proc. R. Soc. London, Ser. A, 173:474–502. Cowen, J.P., Giovannoni, S.J., Kenig, F., Johnson, H.P., Butterfield, D., Rappé, M.S., Hutnak, M., and Lam, P., 2002. Fluids from aging ocean crust that support microbial life. 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