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doi:10.2204/iodp.sp.310.2005
SITE SUMMARIES (continued)
Proposed Site: TAH-03A (transect)
Priority: |
3 (Alternate site) |
Position: |
149°33'W, 17°45'S |
Water depth (m): |
30150 |
Target drilling depth (mbsf): |
5085 |
Survey coverage:
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Seismic: SISMITA cruise (October 2002)
High-resolution seismic reflection
Seismic grid
Swath bathymetry
Imagery (Cyana submersible)
Photography and video available
Sediment sampling: ORSTOM
Holes P6, P7: 1991 and 1992
Holes P8P10: 1995
Rock sampling: SISMITA (October 2002)
Dredging
Other
Water current and navigation data available
See Figures F11, F12, F13; Table T1
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Objective:
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Establish the course of postglacial sea level rise at Tahiti (i.e., to define the exact shape of the deglaciation curve) for the period 2010 ka.
Define short-term paleoclimatic changes, especially SST variations, for the region over the last 20 k.y.
Analyze the impact of sea level changes on reef growth, geometry, and biological makeup. |
Logging program:
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Litho-density
Natural gamma radiation
Resistivity: induction
Acoustic velocity
Borehole televiewer
Borehole pressure and temperature |
Nature of rock anticipated:
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Sediments: reef frameworks, limestones, and unconsolidated sands
Basement: volcanic
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