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doi:10.2204/iodp.sp.310.2005

SITE SUMMARIES (continued)

Proposed Site: TAH-02A (transect)
Priority: 1
Position: 149°24'W, 17°29'S
Water depth (m): 25–310
Target drilling depth (mbsf): 50–100
Survey coverage:
 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 P8–P10: 1995
    Rock sampling: SISMITA (October 2002)
  • Dredging
    Other
  • Water current and navigation data available
    See Figures F8, F9, F10; Table T1
    		•
    Objective:
  • Establish the course of postglacial sea level rise at Tahiti (i.e., to define the exact shape of the deglaciation curve) for the period 20–10 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:
  • Litho-density
  • Natural gamma radiation
  • Resistivity: induction
  • Acoustic velocity
  • Borehole televiewer
  • Borehole pressure and temperature
    		•
    Nature of rock anticipated:
    		 Sediments: reef frameworks, limestones, and unconsolidated sands
    Basement: volcanic

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