Steven Dutch, Professor Emeritus, Natural and Applied Sciences, Universityof Wisconsin - Green Bay
On December 16, 1954, a magnitude 7.1 earthquake created a fault rupture 80 kilometers long with up to 5 meters of displacement. The Bureau of Land Management has markers commemorating the event. These photos were taken April 25, 2003. | |
Looking east along U.S. 50 toward the Desatoya Mountains. Part of the upgrade in the foreground was the fault rupture across the highway. | |
Fairview Peak (8243 feet) is the sharp ridge with the patch of snow. The view at left looks up the road to the fault scarps. The scarps are about 8 kilometers south of here. | |
Left and Below: Closeups of the rhyolite that makes up Fairview Peak. | |
A spur to the west leads to a parking area where some of the best scarps are visible. | |
View of the parking loop looking back down the spur to the access road. | |
Left and Below: The fault scarp is amazingly well preserved after 50 years. | |
A placard at the parking area explains earthquake magnitude. Note the main fault rupture and a smaller rupture above and behind it. | |
Left and Below: Views looking south along the scarp near the parking area. | |
Looking south from the top of the offset ridge. The fault trace becomes more difficult to follow. There appear to be at least two fault splays here: a main break to the right of the rightmost tree on the far ridge and a smaller one running diagonally up the ridge toward the low tree left of center. | |
Offset in colluvium north of the parking loop. | |
Left and below: Views looking north along the rupture north of the parking loop. | |
Distant view looking northeast to the Desatoya Mountains. | |
Left and below: Views north along the access road. The snow-capped mountain is the summit of the Clan Alpine Range. The light colored mountain seen looking directly down the access road is Chalk Mountain. | |
Left and Below: Views of the basal scarp of Fairview Peak. The fault is sometimes marked by a line of trees where fractures allow greater moisture storage. The 1954 rupture is difficult to trace from the road. | |
View looking northwest toward the Stillwater Range. | |
Left and Below: 1954 ruptures are still fairly apparent near U.S. 50. They're actually easier to see after visiting the main rupture area and getting a good feel for how the ruptures are expressed. | |
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Created 7 April 2003, Last Update 06 June 2020