Sevier Fault on the west end of the Red Canyon in Utah, USA
This picture is taken north from the Scenic Byway, Utah RT12. At right the bright red layers of the Claron Formation (also making up Bryce Canyon a few miles to the east). The sharp line separating the Claron formation from the black basalt flow and talus is the Sevier fault, at this point dropping the western part (left) some 900 meters, one earthquake at the time. The lava flow is only 0.5 million years old and originally covered the fault line, its now about 200 meters lower, indicating a slip rate of about 0.4mm per year.
Sevier Fault on the west end of the Red Canyon in Utah, USA
This picture is taken north from the Scenic Byway, Utah RT12. At right the bright red layers of the Claron Formation (also making up Bryce Canyon a few miles to the east). The sharp line separating the Claron formation from the black basalt flow and talus is the Sevier fault, at this point dropping the western part (left) some 900 meters, one earthquake at the time. The lava flow is only 0.5 million years old and originally covered the fault line, its now about 200 meters lower, indicating a slip rate of about 0.4mm per year.