Seismo-Watch, Special Earthquake Report, Alaska M 7.9 earthquake, Fault Ruptures, Page 2

Fault scarp near Augustana Creek, just west of Delta River. The offset
was approximately 16 feet. Some cracks were up to 9 feet deep. A pressure ridge is visible in the background. (Photo by USGS)

A fault trace visible in trees southeast of Tok Cutoff Highway.(Photo by USGS)

These two rockslides flowed a mile northward over the Black Rapids Glacier. They were the largest observed. They are about 12 miles west of the Richardson Highway. (Photo by USGS)

Richardson Highway on right, looking north. The Alaska Pipeline is on the left. Road offset reveals Denali fault location. The part of the pipeline designed to withstand movement along the Denali fault is in the middle part of the photograph. The fault runs beneath the pipeline near the left edge of the photograph. Some damage to the pipeline occurred at this location.

Richardson Highway offset 8.5 feet in right-lateral sense. This
location is near where supports to the Trans Alaska Pipeline sustained damage. (Photo by USGS)

Trace of the Denali Fault running up the north side of the Canwell Glacier about 10 miles east of the Richardson Highway.

Farther up the Canwell glacier the fault trace zig-zags across the snow and ice surface.

Liquefaction, spreading and settling at the north end of Fielding Lake, which is about 11 miles south of the Denali fault. Note the tilted buildings.

Fault offset of Tok cutoff highway. On the ground researchers estimated
offset as 23 feet.

Totschunda fault trace. A significant finding of the initial surveys was that the Totschunda fault ruptured during the earthquake. The Totschunda fault connects with Denali fault, is located at the southeastern extent of the rupture zone, and the fault has a more southeasterly trend than the Denali fault.

Snow and ice avalanches on the Gakona Glacier. A fault trace is dimly visible in foreground.

A view northwest along the Totschunda fault at the SE most extent. (Photo by USGS)

Image Source: Alaska Interior Reveals Scars and Ruptures from 7.9 Denali Fault Quake, USGS Press Release, 11/7/02

	Fault scarp near Augustana Creek, just west of Delta River. The offset was approximately 16 feet. Some cracks were up to 9 feet deep. A pressure ridge is visible in the background. (Photo by USGS)
	A fault trace visible in trees southeast of Tok Cutoff Highway.(Photo by USGS)
	These two rockslides flowed a mile northward over the Black Rapids Glacier. They were the largest observed. They are about 12 miles west of the Richardson Highway. (Photo by USGS)
	Richardson Highway on right, looking north. The Alaska Pipeline is on the left. Road offset reveals Denali fault location. The part of the pipeline designed to withstand movement along the Denali fault is in the middle part of the photograph. The fault runs beneath the pipeline near the left edge of the photograph. Some damage to the pipeline occurred at this location.
	Richardson Highway offset 8.5 feet in right-lateral sense. This location is near where supports to the Trans Alaska Pipeline sustained damage. (Photo by USGS)
	Trace of the Denali Fault running up the north side of the Canwell Glacier about 10 miles east of the Richardson Highway.
	Farther up the Canwell glacier the fault trace zig-zags across the snow and ice surface.
	Liquefaction, spreading and settling at the north end of Fielding Lake, which is about 11 miles south of the Denali fault. Note the tilted buildings.
	Fault offset of Tok cutoff highway. On the ground researchers estimated offset as 23 feet.
	Totschunda fault trace. A significant finding of the initial surveys was that the Totschunda fault ruptured during the earthquake. The Totschunda fault connects with Denali fault, is located at the southeastern extent of the rupture zone, and the fault has a more southeasterly trend than the Denali fault.
	Snow and ice avalanches on the Gakona Glacier. A fault trace is dimly visible in foreground.

	A view northwest along the Totschunda fault at the SE most extent. (Photo by USGS)