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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 1977-020-FA

Other ID: Decca 2/Bravo; CORPUS 49/54

Status: Completed

Organization(s): USGS, Woods Hole Coastal and Marine Science Center

Funding Program(s):

Principal Investigator(s): Charles W. Holmes

Affiliate Investigator(s):

Information Specialist(s):

Data Type(s): Seismics: Sparker, Location-Elevation: Navigation

Scientific Purpose/Goals: Obtain fresh large-volume cores to aid in the contracted study into the origin of the 27 degree geochemical anomaly, a region on the shelf where an increase in copper, nickel and manganese is apparent.


Start Port/Location:

End Port/Location:

Start Date: 1977-05-28

End Date: 1977-06-05

Equipment Used: Sparker , Loran-A

Information to be Derived: Samples and chemical analysis; Morphology;

Summary of Activity and Data Gathered: Although the prime mission of the cruise was to obtain cores for geochemical study, attainment of high-resolution profiles was considered important for proper sedimentologic interpretation of the cores. Cores were taken over the entire shelf with sites selected on the basis of previous work. In addition, 20 cores were concentrated around the 27 degree latitude. Hydroplastic cores: 50; Minisparker: 500 km; 7/3.5 kHz Sub-bottom profiler: 600 km.

Staff: James S. Booth, Charles W. Holmes, Cynthia Rice, Ronald J. Miller, Neal Lillard, Charles Stelting, Kenneth Roberts, Michael Dorsey

Affiliate Staff:
Tim Martin
James Woods - USGS-Corpus Christi; Lorri Felepek - U. Michigan

Notes: Original Center People field contained: USGS-Corpus Christi: Chuck Holmes - Ch. Sci., Jim Booth, Mike Dorsey, Jack Kindinger, Neal Lillard, Tim Martin, Ronald Miller, Cyndi Rice, Ken Roberts, Charles Stelting, James Woods.


south Texas outer continental shelf, Texas, Gulf of Mexico, United States, North America, North Atlantic;

North: 28.25 South: 26 West: -97.3 East: -96


photo of Decca Profiler
Decca Profiler



Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Sparker --- Sparker
Loran-A --- Navigation

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