Summary Information for Field Activity 1978-027-FA

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

Dates: September 11, 1978 to September 21, 1978

Chief scientist: Diane Eskenasy

Objectives: 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.

Type of Activity:

Information to be derived:

Summary: Minisparker data: 250 km.

Contact: Diane Eskenasy ()

InfoBank: uses the identifier A-9-78-MA. Visit this site for more information.

Related Links:

Platform Info:

ASTERIAS

Publications resulting from these data

Oldale, Robert N.,1985, Upper Wisconsinan submarine end moraines off Cape Ann, Massachusetts: Quaternary Research, v. 24, no. 2: p. 187-196. (Also available at http://dx.doi.org/10.1016/0033-5894(85)90005-5)

Eskenasy, Diane 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.. (Available as a PDF version)

Oldale, Robert N.,1985, A drowned Holocene barrier spit off Cape Ann, Massachusetts: Geology, v. 13, no. 5: p. 375-377. (Also available at http://dx.doi.org/10.1130/0091-7613(1985)13<375:ADHBSO>2.0.CO;2)

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Data Types and Locations:

Navigation

Cruise track chart including line numbers, days and 15-minute positions.

Logs

Chief Scientist's daily log of ship movement, equipment and data acquisition notes, and track chart.

Sparker log describing equipment configuration, data acquisition notes, ship movement, weather, etc.

Seismics

scanned seismic record sections