USGS - science for a changing world

USGS Coastal and Marine Geology Program

Field Activity Details for field activity 1971-010-FA

Other ID: CHAIN 100-3

Status: Completed

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

Funding Program(s):

Principal Investigator(s): John C. Hathaway

Affiliate Investigator(s): David Ross - WHOI

Information Specialist(s): Nancy K. Soderberg

Data Type(s): Sonar: Single Beam, Imagery: Photo, Sampling: Biology, Sampling: Geology, Visual Identification: Ground Truthing, Sampling: Chemistry, Seismics: Air Gun / Water Gun, Seismics: Boomer, Seismics: Bubble Gun, Seismics: Sparker, Seismics: Sub Bottom Profiler

Scientific Purpose/Goals: Conduct a geological and geophysical study of the Red Sea, especially the eastern margin; conduct further geological and geophysical studies of the hot brine area, including some geochemical prospecting; and determine if any other hot brine area exists.


Start Port/Location: Massawa, Ethiopia

End Port/Location: Djibouti

Start Date: 1971-03-02

End Date: 1971-03-29

Equipment Used: Grab sampler, Mooring tripod, Echosounder, Seismic reflection, Camera- deep sea, Water sampler, Geomechanique streamer

Information to be Derived: Samples and chemical analysis;

Summary of Activity and Data Gathered: Leg 3 of Cruise CHAIN 100 collected piston and gravity cores, seismic profiles, gravity data, magnetics, bathymetry, temperature measurements, and bottom photos. Hathaway will analyze cores using x-ray diffraction.

Staff: John C. Hathaway, Frank T. Manheim

Affiliate Staff:



Red Sea, Indian Ocean,

North: 30 South: 10 West: 32 East: 47


photo of Chain



Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Echosounder --- Single Beam
Camera- deep sea --- Photo
Grab sampler --- Biology
Seismic reflection --- Air Gun / Water Gun
Mooring tripod --- Ground Truthing
Water sampler --- Chemistry
Geomechanique streamer --- Temperature

Accessibility FOIA Privacy Policies and Notices

U.S. Department of the Interior | U.S. Geological Survey
Questions or Comments? Contact CMGDS Team