Other ID: none
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Location: Jeffreys Ledge, Gulf of Maine, Cape Ann, Massachusetts, New Hampshire, United States, North America, North Atlantic;
Principal Investigator(s): Diane M. Eskenasy
Data Type(s): Seismics: Sparker, Seismics: Air Gun / Water Gun, Seismics: Boomer, Seismics: Bubble Gun, Location-Elevation: Navigation
Scientific Purpose/Goals: Run seismic lines on and around Jeffreys Ledge to determine the origin and structure of some sediments surrounding Jeffreys Ledge and the structure and origin of the underlying sediments; observe the structure of the Presumpscot Formation flanking the western end of Jeffreys Ledge and determine if the deformation is related to a Late Wisconsin readvance of the continental ice sheet; and locate the offshore extension of the Clinton-Newbury and the Bloody Bluff faults.
Start Date: 1978-09-11
Start Port/Location: Woods Hole, MA
End Date: 1978-09-21
End Port/Location: Woods Hole, MA
Equipment Used: Del Norte 26 sparker, Del Norte hydrophone, Loran-C, Raytheon radar
Information to be Derived:
Summary of Activity and Data Gathered: Minisparker data: 250 km.
Staff: Robert N. Oldale, Kenneth E. Parolski, Diane M. Eskenasy, David Mason
Eskenasy, D.M., and Bailey, Norman G., 1980, Minisparker profiles from Jeffreys Ledge and adjacent areas in the western Gulf of Maine: U.S. Geological Survey Open-File Report 80-320, 2 p., download PDF.
Oldale, R.N., 1985, A drowned Holocene barrier spit off Cape Ann, Massachusetts: Geology, v. 13 no. 5, doi: 10.1130/0091-7613(1985)13<375:ADHBSO>2.0.CO;2.
Oldale, R.N., 1985, Upper Wisconsinan submarine end moraines off Cape Ann, Massachusetts: Quaternary Research, v. 24 no. 2, doi: 10.1016/0033-5894(85)90005-5.