
Abert Rim (Hwy 31)
Posted by:
Volcanoguy
N 42° 27.745 W 120° 16.935
10T E 723448 N 4704699
Oregon Geology Marker about Abert Rim on Ore. Hwy. 31. *UPDATE 6/4/17* This Beaver Board has been replaced and relocated to the west side of the highway and further south from the original. New coordinates updated.
Waymark Code: WM2DGW
Location: Oregon, United States
Date Posted: 10/16/2007
Views: 24
*UPDATE 6/4/17* This Beaver Board has been replaced with a newer Beaver Board as well as being relocated across the highway and further south from the original. A new sign description reads:
Marker Name: Abert Rim
Oregon Geology
Marker Text: Behind you to the east is a steep cliff called Abert Rim, made of many layers of hardened lava flows. This 30-mile-long, 2,500-foot-high, steep cliff is an example of a fault scarp, produced over millenia by great blocks of rock tilting and moving along faults in this region where the earth's crust is thinning and stretching.
The fault that produced Abert Rim is on of many in the Basin and Range Province--ageologic region where rising blocks of crust (horsts) form mountain ranges, and sinking blocks of crust (grabens) create broad basins. The region spans about 300,000 square miles, including almost all of Nevada and parts of Oregon, Idaho, Utah, California, Arizona, and New Mexico.
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