| 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 |
| Genre: | Article |
| ProdID: | 70016386 |
| Citation Author: | Frederiksen, N. O. |
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| Citation End Page: | 571 |
| Citation Issue: | 6 |
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| Citation Language: | English |
| Citation Larger Work Title: | Palaios |
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| Citation Number Of Pages: | 8 |
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| Citation Search Results Text: | Pulses of middle Eocene to earliest Oligocene climatic deterioration in southern California and the Gulf Coast; 1991; Article; Journal; Palaios; Frederiksen, N. O. |
| Citation Start Page: | 564 |
| Citation Volume: | 6 |
| Citation Year: | 1991 |
| Type: | citation/reference |
| Text: | Pulses of middle Eocene to earliest Oligocene climatic deterioration in southern California and the Gulf Coast; 1991; Article; Journal; Palaios; Frederiksen, N. O. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 1991 00:00 -0600 |
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