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Summary for Field Activity Number 1970-014-FA

Alternate Leg ID: DSDP Leg 11

Area of Operations: Cat Gap, Bahamas, Blake-Bahama Outer Ridge, eastern U.S. Atlantic continental rise, continental shelf, North America, North Atlantic

Dates: April 08, 1970 to June 01, 1970

Objectives: During this eight-week cruise, 11 sites were drilled in the western North Atlantic in an attempt to achieve the broad scientific goals of the project and to pursue the more specific objectives outlined as follows: 1. to recover the oldest in-place material from the top of the ocean crust as near the continental margin as possible in an attempt to date the age of the western Atlantic, and from this data infer the age of the breakup of North America and Africa; 2. to determine the paleo-environment of the developing Atlantic; 3. to sample and date the prominent seismic reflection horizons that lie below much of the western Atlantic; and 4. to determine the composition and origin of the massive accumulation of sediment that forms the Blake-Bahama Outer Ridge system and continental rise off North America.

Type of Activity: Sampling

Information to be derived: Samples and chemical analysis
Grain size analysis

Summary: Well holes: 12 (#98, 99, 99A, 100, 101, 101A, 102, 103, 104, 105, 106, 106A, 106B, 107, 108); Cores: 150 (recovered 2083 ft., 635 m).

USGS Project Number: DSDP

Contact: Jack Hathaway (

Map for Area of Operations :

Map of field activity boundary.

Platform Info:
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