Other ID: none
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
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 Port/Location: Woods Hole, MA
End Port/Location: Woods Hole, MA
Start Date: 1978-09-11
End Date: 1978-09-21
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
Jeffreys Ledge, Gulf of Maine, Cape Ann, Massachusetts, New Hampshire, United States, North America, North Atlantic;
Eskenasy, D.M., and Bailey, Norman G., 1980, Minisparker profiles from Jeffreys Ledge and adjacent areas in the western Gulf of Maine: 2, 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.