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Summary Information for Field Activity 1975-022-FA

Area of Operations: Georges Bank, Nantucket Shoals, Massachusetts, United States, North America, North Atlantic

Dates: October 02, 1975 to October 17, 1975

Chief scientist: John Schlee

Objectives: The main purposes of the cruise were to (1) investigate the shallow structure of the area (as a key to spot potential geologic hazards), (2) to conduct a study of the deeper crustal structure through measurement of gravity and magnetics and through seismic reflection profiles, and (3) to collect shallow seismic reflection profiles over areas where vibracores were taken on the first cruise of the FAY.

Type of Activity: Seismic profiling;

Information to be derived: Bathymetric maps;

Summary: The cruise completed a survey with a 20 km line spacing (N-S) over the bank with 3 tie lines along the central northern and southern parts of the bank. Lines were extended into the deep ocean (1800 m) to assure coverage over the continental slope. 3.5 kHz: 3486 km (1882 nm); Minisparker: 3187 km (1721 nm); Airgun: 3608 km (1948 nm); Gravity: 3897+ km (2104 nm); Magnetics (gradiometer): 3700 km (1998 nm).

Contact: Nancy Soderberg (

InfoBank: uses the identifier F-3-75-GK. Visit this site for more information.

Related Links:

Click to get Google Software - Download 75022.kml to view this field activity in Google Earth

Platform Info:

Publications resulting from these data

Paskevich, Valerie F., and Soderberg, Nancy K.,1997, Navigation and geophysical data collected onboard the R/V FAY from 1975-1976: U.S. Geological Survey Open-File Report 97-512, CD-ROM. (Also available at

Chaytor, Jason D., ten Brink, Uri S., Solow, Andrew R., and Andrews, Brian D.,2009, Size distribution of submarine landslides along the U.S. Atlantic margin: Marine Geology, v. 264, no. 1-2: p. 16-27. (Also available at

Twichell, David C., Chaytor, Jason D., ten Brink, Uri S., and Buczkowski, Brian,2009, Morphology of late Quaternary submarine landslides along the U.S. Atlantic continental margin: Marine Geology, v. 264, no. 1-2: p. 4-15. (Also available at

ten Brink, U.S., Barkan, R., Andrews, B.D., and Chaytor, J.D.,2009, Size distributions and failure initiation of submarine and subaerial landslides: Earth and Planetary Science Letters, v. 287, no. 1-2: p. 31-42. (Also available at

Geist, Eric L., Lynett, Patrick J., and Chaytor, Jason D.,2009, Hydrodynamic modeling of tsunamis from the Currituck landslide: Marine Geology, v. 264, no. 1-2: p. 41-52. (Also available at

Data Types and Locations:


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