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Upper Wisconsinan till recovered on the continental shelf southeast of New England

Science

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Abstract

Basal till was identified in two sediment cores collected about 69 kilometers southeast of Nantucket Island on the east and west sides of Great South Channel. These are the first samples of till collected on the outer continental shelf off the northeastern United States. The carbon-14 age of the total organic carbon in the tills provides a "no older than" age of about 20,000 years before present and suggests that the tills were deposited during the late Wisconsinan glaciation. This conclusion is in support of the hypothesis of an extensive Laurentide ice sheet that extended to the northern side of Georges Bank. Copyright ?? 1980 AAAS.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Upper Wisconsinan till recovered on the continental shelf southeast of New England
Series title:
Science
Volume
210
Issue:
4468
Year Published:
1980
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
423
Last page:
425
Number of Pages:
3