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Tectonic uplift of a middle Wisconsin marine platform near the Mendocino triple junction California.

Geology

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, , , , and

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Abstract

An uplifted wave-cut marine platform eroded across bedrock of the Franciscan Complex at Point Delgada, northern California, is overlain by 0.5 to 5 m of wave-worked pea gravel, which is in turn directly overlain by fluvial gravel and silt deposited as alluvial fans. Fossil wood debris from this horizon yields a 14C date of 44 800 yr. We tentatively correlate this terrace with the middle Wisconsin high sea-level stand at -37m, and if so, the tectonic uplift since middle Wisconsin time has been 44m, and the average rate of uplift has been at least 1.0m/1000 yr. -from Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Tectonic uplift of a middle Wisconsin marine platform near the Mendocino triple junction California.
Series title:
Geology
Volume
11
Issue:
1
Year Published:
1983
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geology
First page:
35
Last page:
39