Paleontology of the Green River Formation / Lance Grande / Wyoming / Paperback

Description

ABOUT THIS BOOK:
Paleontology of the Green River Formation, With a Review of the Fish Fauna Paperback. Publisher: Geological Survey of Wyoming.
The Green River system of Eocene lakes lay in a series of intermontane basins formed by geologic events that uplifted the Rocky Mountains during early Tertiary time. These basins filled from the drainage of nearby tectonic highlands and eventually contained fresh-water lakes supportive of a varied and abundant fauna. Large amounts of ash found in the lacustrine sediments indicate that volcanoes were particularly active periodically throughout the his-tory of this lake system.
Condition: Good.
Packed in a BOX with padding. Click on Photo to see actual item. Ships same or next day (weekdays and Saturdays)! Ships from California. 2nd Edition, 1984. Pages: not written on, clean, bright, odor free. Cover: clean, bright, edges - very good, light bumping at front bottom corner, slight rubbing to parts of edges.