thumbnail

Sea-level records at ~80 ka from tectonically stable platforms: Florida and Bermuda

Geology

By:
, , , , and

Links

Abstract

Studies from technically active coasts on New Guinea and Barbados have suggested that sea level at ???80 ka was significantly lower than present, whereas data from the Atlantic and Pacific coasts of North America indicate an ???80 ka sea level close to that of the present. We determined ages of corals from a shallow submerged reef off the Florida Keys and an emergent marine deposit on Bermuda. Both localities are on tectonically stable platforms distant from plate boundaries. Uranium-series ages show that corals at both localities grew during the ???80 ka sea-level highstand, and geologic data show that sea level at that time was no lower than 7-9 m below present (Florida) and may have been 1-2 m above present (Bermuda). The ice-volume discrepancy of the 80 ka sea-level estimates is greater than the volume of the Greenland or West Antarctic ice sheets. Comparison of our ages with high-latitude insolation values indicates that the sea-level stand near the present at ???80 ka could have been orbitally forced.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Sea-level records at ~80 ka from tectonically stable platforms: Florida and Bermuda
Series title:
Geology
Volume
24
Issue:
3
Year Published:
1996
Language:
English
Publisher:
Geological Society of America
Description:
4 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geology
First page:
211
Last page:
214
Country:
United States, Bermuda
State:
Florida