IODP

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

Site summaries (continued)

Site GC-11A

Priority: Primary site
Position: Lat 36°25′31.058″N (36.4252938°), Long 7°16′41.312″W (–7.2781422°) (WGS 84)
Water depth (m) 660
Target depth (mbsf): 991 (primary operations plan based on 650 m penetration)
Approved maximum penetration (mbsf): 990
Previous drilling in area: None
Comments: Jurisdiction: Spain Alternate to proposed Site GC-05B
Survey coverage (track map, seismic profile) • Bathymetric sketch with site location and seismic lines position around proposed Site GC-11A on the contourite depositional system on the middle slope of the Gulf of Cádiz (Fig. AF8)
• Multichannel seismic reflection (MCS) profile (Line HE91-20) across the sheeted Drifts (Fig. AF9)
Objectives (see text for complete details): MOW lower core (Pliocene and Quaternary record)
Drilling/coring program: Double APC to refusal, then single XCB/RCB hole to 650 mbsf Temperature measurements: APCT-3
Downhole logging program: Standard tools: triple combo, FMS-sonic, VSI
Anticipated lithology: Sands, silts, and clays