Position: 9°42'N, 86°8.4'W
Water depth: 3580 m
Sediment thickness: 1150 m
Total penetration: 1150 mbsf (approved to a depth of 1150 mbsf)
Seismic coverage: 3D Line 172
Objectives: The objectives of CR-5 are to:
1. Determine the age and physical properties of the sedimentary apron.
2. Penetrate beneath the high-amplitude reflector and determine the nature of the material beneath this layer.
3. Penetrate to the zone of out-of-sequence thrusting and determine the nature of material above and below this layer.
4. Use the results of the drilling to compute a mass balance between incoming and accreted strata.
Hole A: APC/XCB with Adara tool to 500 mbsf plus WSTP measurements
Hole B: Drill to 500 mbsf, RCB to 1150 mbsf
Hole C: Drill with LWD tools to 1150 mbsf
Logging and downhole: Logging while drilling
Nature of rock anticipated: Hemipelagic mudstone and carbonate-rich pelagic mudstone. Possible serpentine slivers beneath high-amplitude reflector.
To Seismic Profile CR-5
To 170 Scientific Participants
170 Table of Contents