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Persistent late Pleistocene-Holocene seasonal upwelling and varves off the coast of California

Quaternary Research

By:
, ,
DOI: 10.1016/0033-5894(87)90069-X

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Abstract

Seasonal production of siliceous phytoplankton and a seasonal flux of terrigenous clastic material produced varved sediments along the continental slope off California during the late Pleistocene to mid-Holocene. Light-colored sediment within laminations and in sediment-trap samples was deposited during summer upwelling and contains an abundance of the diatoms Skeletonema costatum and Chaetoceros spp. resting spores. Dark-colored sediment deposited in the fall and winter contains abundant Thalassiosira pacifica, and has more terrigenous material. Distribution of diatoms in varves shows that seasonal upwelling has persisted along the California coast and has remained strongly seasonal since the late Pleistocene. ?? 1987.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Persistent late Pleistocene-Holocene seasonal upwelling and varves off the coast of California
Series title:
Quaternary Research
DOI:
10.1016/0033-5894(87)90069-X
Volume
28
Issue:
2
Year Published:
1987
Language:
English
Publisher:
Elsevier
Publisher location:
Amsterdam, Netherlands
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
307
Last page:
313
Number of Pages:
7