Site summaries

Site AA-2B

Priority: Primary
Position: 10°47.4059′N, 93°00.0000′E
Water depth (m): 1369
Target drilling depth (mbsf): 738
Approved maximum penetration (mbsf): 738
Survey coverage (track map; seismic profile): Lines AN-01-26A and AN-01-25A (site map Fig. F1B, seismic lines Fig. AF2)
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: APC core to refusal/XCB core to 738 mbsf
Logging program and downhole measurements program: Hole A: APCT-3 temperature measurements and FlexIT orientation
Hole B: FlexIT orientation, wireline logging using the triple combo and FMS-sonic
Nature of rock anticipated: Nannofossil and foraminifer oozes, volcanic ashes