| Priority: |
Primary site |
| Position: |
Lat 36°16′8.30″N (36.268972°), Long 6°47′39.47″W (–6.7942972°) (WGS 84) |
| Water depth (m) |
670 |
| Target depth (mbsf): |
1550 (primary operation plan based on 1139 m penetration) |
| Approved maximum penetration (mbsf): |
1550 |
| Previous drilling in area: |
None |
| Comments: |
Jurisdiction: Spain
Potential hazards: shallow gas, shallow-water flow, soft seabed, strong currents
Relocation of previous proposed Site GC-04B due to its proximity to explosives dumping ground. |
| Survey coverage
(track map, seismic profile) |
• Bathymetric sketch with site location and seismic lines on the contourite depositional system on the middle slope of the Gulf of Cádiz (close to the Strait of Gibraltar) (Fig. AF4)
• Multichannel seismic reflection (MCS) profile (Line S81A-16) across the middle slope (Fig. AF5).
|
| 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 1550 mbsf
Temperature measurements: APCT-3 |
| Downhole logging program: |
Standard tools: triple combo, FMS-sonic, VSI |
| Anticipated lithology: |
Mainly sands, but also silts and clays |
Tables