USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1980-004-FA

Other ID: 80-3; E-10-80

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Kurt Grove

Affiliate Investigator(s): Bill Cleary, Chief Scientist - Duke University

Information Specialist(s):

Data Type(s): Sampling: Geology, Location-Elevation: Navigation

Scientific Purpose/Goals: Acquire seismic, bathymetric, and sedimentologic data from previously unsampled portion of the Puerto Rico insular shelf and slope north of Culebra Island and provide alternate research goals for the ill-fated Puerto Rico Trench cruise of the R/V EASTWARD E-1b and c-80.


Start Date: 1980-02-03

Start Port/Location:

End Date: 1980-02-10

End Port/Location:

Equipment Used: Grab sampler - Shipek, Magnavox satellite positioning system, Loran-C

Information to be Derived:

Summary of Activity and Data Gathered: Retrieved 62 bucket and shipek grab sediment samples from the insular shelf north of Culebra and south southwest of St. Thomas; 42 short gravity cores from slope areas north of Culebra and south of St. Thomas; 900 nautical miles of 3.5 kHz seismic record of the slope and shelf; 317 nautical miles of the 20 cu. in. airgun record in the slope north of Culebra; and 41 nautical miles of 20 cu in. airgun record on the slope south west of St. Thomas. All airgun data is recorded on magnetic tape. Data will be jointly worked up by Bill Cleary, Orrin Pilkey, and USGS-San Juan personnel.

Staff: Barry Irwin, Alan Goodman, John West, Kurt Grove

Affiliate Staff:
Bill Cleary - Chief Scientist
Duke University; Arturo Camacho - DNR-San Juan; Jose Muniz - DNR-San Juan; Nelson Espinell - DNR-San Juan

Notes: Original Center People field contained: Kurt Grove - USGS-San Juan; Al Goodman - Technician, Woods Hole; Barry Irwin - Technician, Woods Hole; John West - USGS-Corpus Christi.
Project = Puerto Rico Marine Geology Co-op, Puerto Rico Marine Geology Co-op


insular shelf and slope between Puerto Rico and St. Thomas, north of Isla de Culebra, Puerto Rico, and south southwest of St. Thomas, Virgin Islands, United States, North America, North Atlantic;

North: 19.08333 South: 18.66667 West: -65.5 East: -65.25


photo of Eastward



Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Grab sampler - Shipek --- Geology
Magnavox satellite positioning system --- Navigation
Loran-C --- Navigation