IODP

doi:10.14379/iodp.sp.353.2014

Site summaries (continued)

Site AA-4B

Priority: Primary
Position: 10°38.0307′N, 93°00.0036′E
Water depth (m): 1091
Target drilling depth (mbsf): 422
Approved maximum penetration (mbsf): 422
Survey coverage (track map; seismic profile): Lines AN-01-26A and AN-99-17A (site map Fig. F1B, seismic lines Fig. AF3)
Objective(s): 1. High-resolution reconstruction of oceanic monsoonal paleoclimate and runoff from the Irrawaddy/Salween drainage basins since the Miocene, eastern Bay of Bengal.
2. High-resolution reconstruction of oceanic circulation at intermediate depths in the Andaman Sea since the Miocene.
Drilling program: Holes A, B, C: APC core to refusal/XCB core to 422 mbsf
Logging program and downhole measurements program: Hole A: APCT-3 temperature measurements and FlexIT orientation
Hole B: FlexIT orientation
Hole C: FlexIT orientation
Nature of rock anticipated: Nannofossil and foraminifer oozes, volcanic ashes