USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1976-013-FA

Other ID: FAY 014, Leg Delta; CORPUS 40

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): 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.

Vehicle(s):

Start Date: 1976-05-09

Start Port/Location: Corpus Christi, TX

End Date: 1976-05-19

End Port/Location: Corpus Christi, TX

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

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

Summary of Activity and Data Gathered: Minisparker profiles: 1087 km; 3.5 kHz EDO: 475 km; Piston cores: 3; Hydroplastic cores: 7; Smith-MacIntyre samples: 2; Dissolved oxygen traces: 0; Bottom photo stations: 0; Gravity cores: 19; Logs 40A, 40B, 40C.

Staff: Kenneth E. Parolski, Charles W. Holmes, Betty Willingham, Carroll Pyle, Stanley Lindquist, Robert Vitaglione

Affiliate Staff:
Sue Casby
Scott Heald
Tom Tatum
Mitch Henry
Dee Haines; Bill Hottman (Texas A&M University)
Bernie Barnard (Texas A&M University); Paul Bereznak (Western Geophysical)

Notes: Original Center People field contained: Charles Holmes, Cary Pyle, Sue Casby, Scott Heald, Stan Linquist, Tom Tatum, Bob Vitaglione, Betty Willingham, Jack Kindinger, Mitch Henry, Kenneth Parolski, Dee Haines.
Project = Gulf of Mexico Continental Slope, Gulf of Mexico Continental Slope

Location:

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

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

Platform(s):

photo of Fay
Fay

Publications

Booth, J.S., 1979, Results of laboratory tests on surficial sediments from the upper continental slope, northern Gulf of Mexico: 11, download PDF.

Portals/Viewers

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Hydroplastic corer --- Geology
EG&G sparker --- Sparker
1976-013-FA-SE-001 ( microfilm of GULF SEISMIC PROFILES)
3.5 kHz --- Sub Bottom Profiler
Smith-MacIntyre grab --- Biology
Geology
Corer - gravity --- Geology
Corer - slow --- Geology
Benthos model 372 camera and strobe --- Photo
InterOceans temperature, depth and dissolved oxygen profiling instrument --- Dissolved Oxygen
Temperature
Integrated Navigation System --- Navigation
1976-013-FA-LN-002 ( Digital tape(s) of NV-COMPOS, )
1976-013-FA-LN-001-01 ( Track Map of Delta XIV (pdf) Trackline map for area Delta XIV, Lines 1 through 7 with shotpoints.)
1976-013-FA-LN-001-02 ( Track Map of Area XV (pdf) Trackline map for area XV, Lines 1 through 11 and 13 through 15 with shotpoints. (Line 12 not run.))