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- Contents
- Title page
- Publisher’s notes
- Abstract
- Schedule for Expedition 341
- Introduction
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 Background
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Scientific objectives
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Drilling and coring strategy
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Downhole measurements strategy
- Sampling and data sharing strategy
- References
- Tables
- Figures
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Site summaries
- Appendix figures
- AF1. Overview bathymetry and seismic reflection profiles: GOAL-15C, -17B, and GOA15-1A.
- AF2. Close-up navigation map, Site GOAL-15C.
- AF3. MCS profile, Line STEEP09 (Site GOAL-15C).
- AF4. MCS profile, Line GOA2505 (Site GOAL-15C).
- AF5. MCS profile, Line GOA2502 (Site GOAL-15C).
- AF6. Close-up navigation map, Site GOA15-1A.
- AF7. MCS profile, Line GOA2503 (Site GOA15-1A).
- AF8. Swath bathymetric map, Sites GOAL-15C, GOA15-1A.
- AF9. Close-up navigation map, Site GOAL-17B.
- AF10. MCS profile, Line STEEP07b (Site GOAL-17B).
- AF11. Swath bathymetric map, Site GOAL-17B.
- AF12. Close-up navigation map, Sites GOA16-1A, GOAL-16B, GOA16-2A.
- AF13. Swath bathymetric map, Sites GOA16-1A, GOAL-16B, GOA16-2A.
- AF14. MCS profile, Line GOA3201 (Site GOAL-16B).
- AF15. MCS profile, Line GOA3202 (Site GOAL-16B).
- AF16. MCS profile, Line STEEP07 (Site GOA16-1A).
- AF17. MCS profile, Line STEEP13 (Site GOA16-2A).
- AF18. Overview bathymetry and seismic profiles, Sites GOA18-2A, GOA18-1A, GOAL-18A.
- AF19. Close-up navigation map, Sites GOA18-2A, GOAL-18A.
- AF20. Close-up navigation map, Site GOA18-1A.
- AF21. MCS profile, Line MCS01 (Sites GOA18-2A, GOAL-18A, GOA18-1A).
- AF22. Seismic profile, Line 678-04/05 (Site GOAL-18A).
- AF23. Seismic profile, Line 13 (Site GOA18-1A).
- AF24. MCS profile, Line MCS14 (Site GOA18-2A).
- AF25. Close-up navigation map, Site KB-2A.
- AF26. MCS profile, Line GOA3101 (Site KB-2A).
- AF27. MCS profile, Line GOA3102 (Site KB-2A).
- AF28. Swath bathymetric map, Site KB-2A.
- Expedition scientists and scientific participants
- PDF file
- See Expedition 341 Scientific Prospectus Addendum (July 2012)
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doi:10.2204/iodp.sp.341.2011
Site summaries (continued)
Proposed Site KB-2A
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Priority:
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Primary
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Position:
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59°31.93′N, 144°8.03′W
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Water depth (mbrf):
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721
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Target drilling depth (mbsf):
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400
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Approved maximum penetration (mbsf):
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417
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Survey coverage:
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Inline GOA3101 (CDP 398) (navigation and bathymetric maps Figs. AF25, AF28; seismic profiles Figs. AF26, AF27)
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Objective:
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• Constrain the timing of multiple glacial events of the northern Cordilleran Ice Sheet, to test its relation to global ice sheet dynamics
• Test role of North Pacific surface temperatures control of late Pleistocene
glaciation at sub-century scale
• Document dynamics of productivity and intermediate water circulation in the Northeast Pacific
• Document paleomagnetic intensity and secular variation in NE Pacific to test hypothesis that lowermost mantle heterogeneities influence Earth’s magnetic field
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Drilling and coring program:
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• Hole A: APC to ~200 mbsf with non-magnetic core barrels and core orientation
• Hole B: APC to ~200 mbsf with non-magnetic core barrels
• Hole C: APC to ~200 mbsf with non-magnetic core barrels
• Hole D: APC/XCB to 400 mbsf
• See “Drilling and coring strategy” and Table T2
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Downhole measurements program:
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• Hole D: wireline logging with triple combo, FMS-sonic, VSI, and Magnetic Properties tool strings
• See “Downhole measurements strategy” and Table T2
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Anticipated lithology:
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Hemipelagic mud, glacimarine sediment with diamict
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