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Biodiversity Response to Climate Change in the Middle PleistoceneThe Porcupine Cave Fauna from Colorado$
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Anthony Barnosky

Print publication date: 2004

Print ISBN-13: 9780520240827

Published to California Scholarship Online: March 2012

DOI: 10.1525/california/9780520240827.001.0001

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The Geology and Speleogenesis of Porcupine Cave

The Geology and Speleogenesis of Porcupine Cave

Chapter:
(p.51) Five The Geology and Speleogenesis of Porcupine Cave
Source:
Biodiversity Response to Climate Change in the Middle Pleistocene
Author(s):

Robert G. Raynolds

Publisher:
University of California Press
DOI:10.1525/california/9780520240827.003.0005

This chapter describes the formation and evolution of Porcupine Cave. Although Cretaceous strata have since been entirely eroded from the vicinity of the cave, one can develop an estimate of what was once there by examining regional facies distribution patterns and subsurface drilling data. The chapter also presents a geological sketch of the vicinity and stratigraphic sections of the Porcupine Cave. After initial weathering in the Paleozoic, the cave strata were deeply buried until uplifted during the Laramide Orogeny. In the late Tertiary, as the region was weathered and underwent at least one episode of aggradation, it is likely that there were multiple times of speleogenesis or cave formation.

Keywords:   Porcupine Cave, Cretaceous strata, cave strata, Laramide Orogeny, speleogenesis, cave formation

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