The Miocene Purple Mountain Flora of Western Nevada

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University of California Press, Jan 1, 1995 - Science - 62 pages
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In this study, nine florules from the Chloropagus Formation near Fernley, Nevada, are dated at 14.7-13.4 million years. The author finds that dominant mixed conifer forest and sclerophyll woodland species of the Sierra Nevada-Klamath region replaced exotic deciduous hardwoods in the two lowest sites. He concludes that this change reflects the loss of adequate summer rain as upwelling from a colder ocean resulted from spreading East Antarctic ice.
 

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Contents

GEOLOGIC OCCURRENCE AND AGE
4
COMPOSITION OF THE FLORA
14
CHANGES IN MIOCENE VEGETATION
28
SYSTEMATIC DESCRIPTIONS
35
Literature Cited
59
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