SITE: NBR-8A PRIORITY: 1 POSITION: 15°32.21'N, 58°43.39'W WATER DEPTH: 4756 m SEDIMENT THICKNESS: 800 m TOTAL PENETRATION: 550 m SEISMIC COVERAGE: 3-D survey, Line 736Objectives: This site will establish the physical properties of the negative polarity reflection at this locality of the Barbados decollement. This site will also completely penetrate the underthrust section to ascertain changes in physical properties during underthrusting.
Drilling Program: No cores
Logging and Downhole Operations: Logging While Drilling
Nature of Rock Anticipated: Pelagic and hemipelagic sediments
SITE: NBR-9A PRIORITY: 1 POSITION: 15°32.16'N, 58°42.85'W WATER DEPTH: 4984 m SEDIMENT THICKNESS: 810 m TOTAL PENETRATION: 550 m SEISMIC COVERAGE: 3D survey, Line 736Objectives: NBR-9, located at CORK Site 949 1800 m west of the deformation front, will establish the physical properties of a decollement zone with intermediate reflection polarity characteristics and determine the physical property profile at this instrumented CORK site.
Drilling Program: No cores
Logging and Downhole Operations: Logging While Drilling
Nature of Rock Anticipated: Pelagic and hemipelagic sediments
SITE: NBR-10A PRIORITY: POSITION: 15°32.85'N, 58°42.198'W WATER DEPTH: 5052 m SEDIMENT THICKNESS: 797 m TOTAL PENETRATION: 400 m SEISMIC COVERAGE: 3D survey, Line 710Objectives: This site is located at the position of ODP Site 676A and it will determine the physical properties of the initial deformation zone of the accretionary prism.
Drilling Program: No cores
Logging and Downhole Operations: Logging While Drilling
Nature of Rock Anticipated: Pelagic and hemipelagic sediments
SITE: NBR-11A PRIORITY: POSITION: 15°32.40'N, 58°38.46'W WATER DEPTH: 4938 m SEDIMENT THICKNESS: 605 m TOTAL PENETRATION: 605 m SEISMIC COVERAGE: 3D survey, Line 751Objectives: This site is located at the position of ODP Site 672A and will provide baseline measurements of physical properties for the incoming sedimentary section of the Barbados Ridge. It will both examine the properties of the protodecollement and establish an overall physical property profile.
Drilling Program: No cores
Logging and Downhole Operations: Logging While Drilling
Nature of Rock Anticipated: Pelagic and hemipelagic sediments