Columbia River Gorge - Gorge Cliffs

About This Item

Photo of the river and cliff faces on the Columbia River Gorge.  The basalt cliffs are Miocene (17-12 million years ago).  The gorge, however, was carved in the Pleistocene period (2 million - 700,000 years ago) and modified by the Missoula Flood (16,000 - 14,000 years ago). 

Created by
Ray Pestrong
Date
Type
Slide
Format
TIFF
Source
Ray Pestrong Collection
San Francisco State University
Locale
Oregon, Washington
Rights
Public
Views
962

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