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Late Wisconsin and Holocene tectonic stability of the United States mid-Atlantic coastal region.

Geology

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Abstract

Deposits that formed in the intertidal zone during sea-level rise 12 000 to 9000 yr ago have undergone very little differential vertical deformation in the area between New York City and South Carolina. The lack of north-south vertical deformation contrasts with tide-gauge and with precise leveling measurements that have been used to indicate that considerable differential vertical movement is occurring along the coast. Probably, present rates of deformation cannot be extrapolated to early Holocene. Depths of dated in-place intertidal deposits and estimates that suggest the US mid-Atlantic shelf was downwarped during Holocene glacio-isostatic adjustment are used to indicate that eustatic sea levels were not substantially below 30m depth about 12 000 yr BP. -Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Late Wisconsin and Holocene tectonic stability of the United States mid-Atlantic coastal region.
Series title:
Geology
Volume
8
Issue:
11
Year Published:
1980
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
534
Last page:
537
Number of Pages:
4