IODP Expedition 331 Scientific Prospectus

doi:10.2204/iodp.sp.331.2010

Site summaries

Priority:	Primary
Position:	126°53.7979'E, 27°47.4538'N
Water depth (m):	982 m
Target drilling depth (mbsf):	50 m (basement)
Approved maximum penetration (mbsf):	50 m
Survey coverage (track map; seismic profile):	Primary line(s): MCS B-B', MCS-18, SCS-18 Crossing line(s): MCS A-A', SCS-F
Objective:	North Big Chimney hydrothermal mound
Drilling program:	Coring to refusal (XCB [ESCS] and RCB [MDCB])
Logging program:	Standard IODP measurements, formation fluid sampling, borehole temperature, and pressure.
Nature of rock anticipated:	Hydrothermal sulfide and sulfate deposits.