Near the southeast extent of the surface rupture of the Totschunda fault thrust faulting pushed the frozen sand and gravel over the snow surface.
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Totschunda Fault
Near the southeast extent of the surface rupture of the Totschunda fault thrust faulting pushed the frozen sand and gravel over the snow surface.
Denali Fault: Fault Trace
Fault trace in trees west of the Mentasta Road. Tallest trees are perhaps 40 feet tall.
Fault trace in trees west of the Mentasta Road. Tallest trees are perhaps 40 feet tall.
Denali Fault: Highway Offset
View north along Richardson Highway where it was offset by the Denali fault. Trans Alaska Pipeline is in the background.
View north along Richardson Highway where it was offset by the Denali fault. Trans Alaska Pipeline is in the background.
Denali Fault: Black Rapids Glacier
View eastward along Black Rapids Glacier. The Denali fault follows the trace of the glacier. These very large rockslides went a mile across the glacier on the right side. Investigations of the headwall of the middle landslide indicate a volume at least as large as that which fell, has dropped a meter or two and is almost ready to fall.
View eastward along Black Rapids Glacier. The Denali fault follows the trace of the glacier. These very large rockslides went a mile across the glacier on the right side. Investigations of the headwall of the middle landslide indicate a volume at least as large as that which fell, has dropped a meter or two and is almost ready to fall.
Denali Fault: Canwell Glacier
Trace of Denali fault along north margin of Canwell Glacier.
Trace of Denali fault along north margin of Canwell Glacier.
Denali Fault
At pass west of Delta River. Here there was roughly 5 m of offset. Note the push up in the background. There is permafrost at the bottom of the cracks.
At pass west of Delta River. Here there was roughly 5 m of offset. Note the push up in the background. There is permafrost at the bottom of the cracks.
Seattle Fault Strand
USGS and university geologists study the walls of a trench across a recently discovered strand of the Seattle fault.
USGS and university geologists study the walls of a trench across a recently discovered strand of the Seattle fault.
Fault Trace
Fault surface trace of the Hector Mine fault after the October 16, 1999 M7.1 rupture. (Photo by Katherine Kendrick, U.S. Geological Survey)
Fault surface trace of the Hector Mine fault after the October 16, 1999 M7.1 rupture. (Photo by Katherine Kendrick, U.S. Geological Survey)
Aftershocks (1)
The Landers fault (red lines at left) and the Hector Mine fault and its aftershocks (red lines and circles at right). The Hector Mine earthquake was a magnitude 7.1, and it produced thousands of aftershocks.
The Landers fault (red lines at left) and the Hector Mine fault and its aftershocks (red lines and circles at right). The Hector Mine earthquake was a magnitude 7.1, and it produced thousands of aftershocks.
Hector Mine Surface Rupture
Hector Mine surface rupture after 1999 earthquake in southern California.
Hector Mine surface rupture after 1999 earthquake in southern California.
Aerial Photo of the Surface Rupture
Looking towards NW across Lavic Lake, rupture passing from lower right, stepping out toward upper left; NW end of the surface rupture is in the distance on the far side of Lavic Lake.
Looking towards NW across Lavic Lake, rupture passing from lower right, stepping out toward upper left; NW end of the surface rupture is in the distance on the far side of Lavic Lake.
Ground Photo of Fault
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Ground Photo of Fault
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Ground Photo of Fault
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Ground Photo of Fault
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Ground Photo of Fault
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Ground Photo of Fault
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Ground Photo of Fault
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Ground Photo of Fault
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Ground Photo of Fault
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Ground Photo of Fault
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