Geology Reference
In-Depth Information
Basin and Range topography of south-central Oregon shows the up-thrown fault block mountain of Winter Rim
overlooking Summer Lake, which occupies a fault depression or graben [photo by Gary Tepfer].
Eastward dipping layers of the Eocene Coaledo Formation at Shore Acres State Park on the southwest coast are
covered by iron-stained terrace deposits [photo by Gary Tepfer].
