Tuesday, October 5, 2010

Describing dirt with sed/strat students...

during a terrific autumn afternoon at the Key Rock aggregate pit just a short distance down the road from the EWU campus (click to enlarge).  We're actually examining unconsolidated sands and gravels of Pleistocene age, deposited by the glacial outburst floods that periodically swept eastern Washington, creating the Channeled Scablands.

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