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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 1976-005-FA

Other ID: FAY 011, Leg Alpha; CORPUS 31/37

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Louis E. Garrison

Affiliate Investigator(s):

Information Specialist(s):

Data Type(s): Sampling: Geology, Seismics: Sparker, Seismics: Sub Bottom Profiler, Sampling: Biology, Biological Field Study: Experiments, Imagery: Photo, Environmental Data: Dissolved Oxygen, Environmental Data: Temperature, Location-Elevation: Navigation

Scientific Purpose/Goals: General objective of the Gulf of Mexico Continental Slope project is to define the possible extent of unstable sediments on the slope and estimate the degree of instability in selected areas. The first phase of the slope project involved acquisition and interpretation of 11,233 statute miles of high-resolution seismic data throughout the study area. Western Geophysical Company of America collected the geophysical data incuding fathometer profiles, 3.5 kHz sub-bottom profiles and 1000 joule sparker profiles. From these data, a map of the shallow surface geological features of the slope was produced. Using this information, specific sites were chosen for deep gulf cruises aboard the FAY. High density seismic profiling was done at each site followed by a sediment sampling program.


Start Port/Location: Corpus Christi, TX

End Port/Location: New Orleans, LA

Start Date: 1976-03-10

End Date: 1976-03-25

Equipment Used: 3.5 kHz, Corer - slow, Corer - gravity, Hydroplastic corer, Benthos model 372 camera and strobe, Smith-MacIntyre grab, Integrated Navigation System, EG&G sparker, InterOceans temperature, depth and dissolved oxygen profiling instrument

Information to be Derived: Grain size analysis; Sea floor map; Morphology;

Summary of Activity and Data Gathered: Minisparker profile: 1248 km; 3.5 kHz EDO: 125 km; Piston cores: 5; Hydroplastic cores: 16; Smith-MacIntyre samples: 16; Dissolved oxygen traces: 11; Bottom photo stations: 10; Gravity cores: 0; Core log: #37A; Sparker log: #37B; Sparker log #37C.

Staff: Louis E. Garrison, Ronald J. Miller, Robert Vitaglione, Cynthia Rice, Kenneth Roberts, Michael Dorsey, Carroll Pyle

Affiliate Staff:
Tom Tatum
Jim Woods
Scott Heald
Dee Haines; Univ. Wisconsin: Scudder Mackey
Jay van Tassel; Texas A&M Univ.: Lester Shepard; Texas A&I Univ.: Kathy Williamson; Western Geophysical: Hendrick Hinkes

Notes: Original Center People field contained: Louis Garrison-Ch. Sci., Ronald Miller, Bob Vitaglione, Jack Kindinger, Cindy Rice, Tom Tatum, Ken Roberts, Mike Dorsey, Jim Woods, Scott Heald, Dee Haines, and Cary Pyle.
Project = Gulf of Mexico Continental Slope, Gulf of Mexico Continental Slope


outer continental shelf, Louisiana, Mississippi, Alabama, Florida, United States, Gulf of Mexico, North America, North Atlantic;

North: 31 South: 17 West: -100 East: -80


photo of Fay


Booth, J.S., 1979, Results of laboratory tests on surficial sediments from the upper continental slope, northern Gulf of Mexico: U.S. Geological Survey Open-File Report 79-579, 11 p..


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Hydroplastic corer --- Geology
EG&G sparker --- Sparker
1976-005-FA-SE-001 ( microfilm of GULF SEISMIC PROFILES)
3.5 kHz --- Sub Bottom Profiler
Smith-MacIntyre grab --- Biology
Corer - gravity --- Geology
Corer - slow --- Geology
Benthos model 372 camera and strobe --- Photo
InterOceans temperature, depth and dissolved oxygen profiling instrument --- Dissolved Oxygen
Integrated Navigation System --- Navigation
1976-005-FA-LN-001-02 ( Track Map Alpha VIII (pdf file) Plotted track map Alpha VIII, Lines 1 through 8 with shotpoints.)
1976-005-FA-LN-001-05 ( Track Map Alpha II (pdf file) Plotted track map Alpha II, Lines 1A through 15 with shotpoints.)
1976-005-FA-LN-001-04 ( Track Map Alpha V/VA (pdf file) Plotted track map Alpha V/VA, Lines 1 through 25 and 25A through 30 with shotpoints.)
1976-005-FA-LN-001-03 ( Track Map Alpha IV (pdf file) Plotted track map Alpha IV, Lines 1 through 7 with shotpoints.)
1976-005-FA-LN-001-01 ( Track Map Alpha I (pdf file) Plotted track map Alpha I, Lines 1-1 through 1-12 with shotpoints.)
1976-005-FA-LN-002 ( Digital tape(s) of NV, )

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