Position: 9°39.7'N, 86°12'W
Water depth: 4160 m
Sediment thickness: 750 m
Total penetration: 750 mbsf (approved to a depth of 750 mbsf)
Seismic coverage: 2D and 3D seismic reflection data (2D Line 20), OBH refraction
Objectives: The objectives of CR-2 are to:
1. Establish the sequence and structure of deformed sedimentary section in the lower slope accretionary wedge.
2. Penetrate the décollement and establish the age and stratigraphy of the underthrust sediment.
3. Determine the physical properties of the accreted and underthust sections and establish the mass flow through the lowermost part of the wedge.
Hole A: APC/XCB with Adara tool to 450 mbsf plus 5 WSTP measurements
Hole B: Drill to 450 mbsf, RCB to 750 mbsf
Hole C: Drill with LWD tools to 500 mbsf
Logging and downhole: Logging while drilling (shear sonic if time permits)
Nature of rock anticipated: Deformed hemipelagic mudstone and carbonate-rich pelagic mudstone.
To Seismic Profile CR-2
To Site CR-3
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