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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 1978-027-FA

Other ID: none

Status: Completed

Organization(s): USGS, Woods Hole Coastal and Marine Science Center

Funding Program(s):

Principal Investigator(s): Diane M. Eskenasy

Affiliate Investigator(s):

Information Specialist(s):

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 hydrophone, Del Norte 26 sparker, Raytheon radar, Loran-C

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

Affiliate Staff:
USGS-Denver: Wallace Bothner
Andrew Shride and Robert Simpson



Jeffreys Ledge, Gulf of Maine, Cape Ann, Massachusetts, New Hampshire, United States, North America, North Atlantic;

North: 43 South: 42.46667 West: -70.8667 East: -70.25


photo of Asterias


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..

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.


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Del Norte 26 sparker --- Sparker
Del Norte hydrophone --- Air Gun / Water Gun
Bubble Gun
1978-027-FA-SE-002 ( microfilm of *SMALL CAN)
1978-027-FA-SE-001-01 ( scanned seismic record sections)
Loran-C --- Navigation
1978-027-FA-LN-001-01 ( Cruise track chart including line numbers, days and 15-minute positions. )
Raytheon radar --- Navigation

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