Other ID: GOSNOLD 164
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Location: western Gulf of Maine, Jeffreys Ledge, Jeffreys Basin, Casco Bay, Massachusetts Bay, Cape Cod Bay, Stellwagen Bank, Massachusetts, New Hampshire, Maine, United States, North America, North Atlantic;
Principal Investigator(s): John S. Schlee
Data Type(s): Sampling: Geology, Sampling: Biology, Seismics: Sub Bottom Profiler, Sonar: Single Beam, Location-Elevation: Navigation
Scientific Purpose/Goals: The main purpose was to complete bottom sediment sampling in the nothern quadrangle and to do additional 3.5 kHz seismic profiling as a supplement to those taken in earlier cruises of the GOSNOLD and VERRILL last year.
Start Date: 1970-06-10
Start Port/Location: Woods Hole, MA
End Date: 1970-06-16
End Port/Location: Woods Hole, MA
Equipment Used: Grab sampler - Van Veen , Dietz-Lafond snapper, Grab sampler, ORE 140 transceiver/1036 transducer sub-bottom profiler, Echosounder, Loran-A, Visual navigation, Raytheon radar
Information to be Derived: Grain size analysis;
Summary of Activity and Data Gathered: A total of 154 stations were occupied during the seven days at sea. The GOSNOLD steamed a total of 691 miles during which we obtained approximately 600 miles of sonic profiles. Samples were taken 2-4 miles apart and were selected utilizing a 1/40,000 scale bathymetric map of the sea floor compiled by the Coast & Geodetic Survey. Selection was key to a variety of topographic features in the area, some only a few hundred meters across. Despite very complex topography, the type of sediment was restricted to relatively few types - broadly outlining topographic provinces rather than particular features. Sonic profiles showed penetration 20 fms over soft bottom and a multilayered arrangement of reflecting horizons over basins. Some of the reflectors appear to pinch out toward the basin edge or to have an erosional pinch out at the edge.
Staff: John S. Schlee, Robert N. Oldale, Charles J. O'Hara
(Samples) Buczkowski, B.J., and Kelsey, S.A., 2007, Archival Policies and Collections Database for the Woods Hole Science Center's Marine Sediment Samples: U.S. Geological Survey Open-File Report 2006-1187, version 1.0.