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Pulses of middle Eocene to earliest Oligocene climatic deterioration in southern California and the Gulf Coast

Palaios

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Abstract

A general deterioration of terrestrial climate took place during middle Eocene to earliest Oligocene time in southern California and in the Gulf Coast. Pollen data, calibrated by calcareous nannofossil ages, indicate four events of rapid floral and/or vegetational change among angiosperms during this time interval. The events can be correlated between the two regions even though these regions lay within different floristic provinces, and each event of angiosperm change is interpreted to indicate a pulse of rapid climatic shift. The most distinct of these events is the Middle Eocene Diversity Decline, which resulted from a peak in last appearances (extinctions, emigrations) centered in the early Bartonian. -from Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Pulses of middle Eocene to earliest Oligocene climatic deterioration in southern California and the Gulf Coast
Series title:
Palaios
Volume
6
Issue:
6
Year Published:
1991
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Palaios
First page:
564
Last page:
571
Number of Pages:
8