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Upper Wisconsinan submarine end moraines off Cape Ann, Massachusetts

Quaternary Research

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DOI: 10.1016/0033-5894(85)90005-5

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Abstract

Seismic profiles across the southwest end of Jeffreys Ledge, a bathymetric high north of Cape Ann, Massachusetts, reveal two end moraines. The moraines overlie upper Wisconsinan glacialmarine silty clay and are composed mostly of subaqueous ice-contact deposits and outwash. They were formed below sea level in water depths of as much as 120 m during fluctuations of a calving ice front. The moraines are late Wisconsinan in age and were formed after the Cambridge readvance, about 14,000 yr B.P., and before the Kennebunk readvance, about 13,000 yr B.P. They represent fluctuations of the ice front during overall retreat of Laurentide ice from the Gulf of Maine and New England. ?? 1985.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Upper Wisconsinan submarine end moraines off Cape Ann, Massachusetts
Series title:
Quaternary Research
DOI:
10.1016/0033-5894(85)90005-5
Volume
24
Issue:
2
Year Published:
1985
Language:
English
Publisher:
Elsevier
Publisher location:
Amsterdam, Netherlands
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Quaternary Research
First page:
187
Last page:
196
Number of Pages:
10