The Miocene Purple Mountain Flora of Western Nevada

The Miocene Purple Mountain Flora of Western Nevada PDF

Author: Daniel I. Axelrod

Publisher: Univ of California Press

Published: 1995-01-01

Total Pages: 120

ISBN-13: 9780520097971

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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.

A Miocene (10-12 Ma) Evergreen Laurel-Oak Forest from Carmel Valley, California

A Miocene (10-12 Ma) Evergreen Laurel-Oak Forest from Carmel Valley, California PDF

Author: Daniel I. Axelrod

Publisher: Univ of California Press

Published: 2000-06-12

Total Pages: 68

ISBN-13: 9780520915992

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This is a study of the Miocene Carmel flora of California, an evergreen laurel–oak forest that grew in a mild temperate (mean annual temperature of 15 degrees C), frost-free climate, with annual precipitation of about 760 mm (30 in.). Collectively, the Carmel and other Miocene floras like the San Pablo and Temblor (broad-leafed deciduous trees, with few evergreen species), the Puente (evergreen oak forest with chaparral species), the Mint Canyon, Ricardo, and Tehachapi (numerous arid subtropical scrub associated with oak woodland and chaparral species) suggest they foreshadowed a similar distribution of the different California vegetation zones today.

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