Investigate submarine canyon off Rio de la Plata, north coast of Puerto Rico: coring, seismics, and bathymetry.
Location
Rio de la Plata Canyon, Puerto Rico, United States, North America, North Atlantic;
Summary
Ewing piston cores: 12; 3.5 kHz: 40 km. Cores obtained from canyon flanks and axis on shelf and slope. Flanks mostly clay with pelagic organisms but many terrigenous sand beds throughout penetration of 20 feet. Semi-indurated probably Tertiary clay and bent pipe in axial attempts. Seismic quality poor but inter-canyon sediments clearly unconformable on apparently smooth surface near axial depth of canyon. 3.5 kHz good for selecting coring locations. Bathymetry and seismics to be compiled/interpreted in San Juan. Cores stored in San Juan. Core cuts to be analyzed at Duke.
Info derived
Morphology;
Comments
Project = Puerto Rico Project, Puerto Rico Project
Information from foghorn: Piston coring;
Brief cruise report including personnel, equipment, and comments on the results of the cruise. Combined with a tabulation of cruise data for fiscal year 1977 as part of the Puerto Rico Marine Geology Co-Op. Includes information for several field activities and a location map.
