IODP

doi:10.2204/iodp.sp.339add.2011

Site summaries (continued)

Site GC-10B

Priority: Alternate site
Position: Lat 36°16′7.15″N (36.2686527°), Long 6°47′23.5″W (–6.7898611°) (WGS 84)
Water depth (m) 671
Target depth (mbsf): 990
Approved maximum penetration (mbsf): 990 (pending EPSP approval)
Previous drilling in area: None
Comments: Jurisdiction: Spain Alternate site to proposed Site GC-04D. Final alternate site approved by EPSP June 2011 of previous Site GC-04B due to its proximity to an explosives dumping ground.
Survey coverage (track map, seismic profile) • Bathymetric sketch of alternate proposed Site GC-10C and seismic lines position on the contourite depositional system on the middle slope of the Gulf of Cádiz (close to the Strait of Gibraltar) (Fig. AF4).
• Airgun seismic reflection (MCS) profile (Line CADIZ-21) across the middle slope (Fig. AF15)
Objectives (see text for complete details): Influence of the Gibraltar Gateway on MOW during the Quaternary and late Pliocene
Drilling/coring program: Double APC to refusal, then single XCB/RCB hole to 990 mbsf Temperature measurements: APCT-3
Downhole logging program: Standard tools: triple combo, FMS-sonic, VSI
Anticipated lithology: Sands, silts, and clays