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Cores from marine geologic features in the western Gulf of Maine

Miscellaneous Field Studies Map 2147

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Abstract

Submerged geologic features located in the western Gulf of Maine between Cape Ann, Massachusetts and New Hampshire (fig. 1), were identified from high-resolution seismic-reflection data collected between 1979 and 1980. The features include the following. (1) A pair of end morained formed during the retreat of the Laurentide Ice Sheet from the Gulf of Maine (Oldale, 1985a). (2) A barrier spit and lagoon complex and (3) a paleodelta, both of which formed during a late Wisconsinan to early Holocene low relative sea-level stand (Oldale and others, 1983; Oldale, 1985b). (4) A wave-cut unconformity that was eroded as the sea transgressed to its present position. (5) A surficial sand depost that formed atop the unconformity in middle Holocene time. Vibracores (fig. 2) were taken in 1984 to corroborate the interpretations from the seismic data, to determine the sedimentary texture and structure of the features, to identify the nature of the unconformity, and to obtain material for 14C dating,

Geospatial Extents

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Cores from marine geologic features in the western Gulf of Maine
Series title:
Miscellaneous Field Studies Map
Series number:
2147
Year Published:
1991
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Description:
2 Plates: 43.0 x 31.79 inches and 38.47 x 36.90 inches
Country:
United States
State:
Maine
Other Geospatial:
Gulf Of Maine