Upper Wisconsinan submarine end moraines off Cape Ann, Massachusetts
Quaternary Research
By: R. N. Oldale
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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.
Suggested Citation
Oldale, R.N., 1985, Upper Wisconsinan submarine end moraines off Cape Ann, Massachusetts: Quaternary Research, v. 24, no. 2, p. 187-196, https://doi.org/10.1016/0033-5894(85)90005-5.
Study Area
| 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 |
| Publication Date | January 20, 2017 |
| Year Published | 1985 |
| Language | English |
| Publisher | Elsevier |
| Publisher location | Amsterdam, Netherlands |
| Contributing office(s) | Woods Hole Coastal and Marine Science Center |
| Description | 10 p. |
| First page | 187 |
| Last page | 196 |
| Country | United States |
| State | Massachusetts |
| Other Geospatial | Cape Ann |