Geology

Floodplain sediments of primarily silty clays form most of the Hagerman Fossil Beds geology.  These sediments range in age from 2.5 to 3.5 million years old and hold vast quantities and high quality fossil assemblages.

Lake Idaho	General Geology	Malad Gorge State Park
Snake River Plain	Bibliography	City of Rocks National Reserve
Bonneville Flood	References	Craters of the Moon NM
The Great Rift
Yellowstone 'Hotspot'

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Last Updated:  Wednesday, October 9, 2002 4:01 PM
http://www.nps.gov/hafo/geology.htm
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