Images

Helicopters and satellite phones were integral to the geologic field response. Here, Peter Haeussler is calling a seismologist to pass along the discovery of the Susitna Glacier thrust fault. View is to the north up the Susitna Glacier. The Denali fault trace lies in the background where the two landslides can be seen.

Peter Haeussler measures offset of the Susitna Glacier thrust fault.

The Susitna Glacier thrust fault southwest of the toe of the Susitna Glacier. The rolled over tundra reflects the fault trace.

View southward toward Mt. McGinnis and two large landslides on the northeastern side. These slides had roughly 40 million cubic meters of material and travelled 10 km down glacier. This is the cover photo of the May 16th, 2003, Science.

Peter Haeussler examining the Denali fault trace on the Susitna Glacier to find matching ice surfaces to determine amount of fault offset.

The fault scarp created a waterfall in the transition region between the Denali fault and the Totschunda fault.

Peter Haeussler prepares to measure the offset of a crevasse on the Canwell Glacier.

The fault scarp created a waterfall in the transition region between the Denali fault and the Totschunda fault.

Bone Creek, 5.5 meter offset measured here. The fault trace runs along the sharp bank edge at the right of the photo, from the bottom center toward the upper right.

View down west fork of Chistochina Glacier. Denali fault can be seen crossing the glacier, Wrangell volcanoes in the distance.

View westward up Black Rapids Glacier at large landslides.

View westward up Black Rapids Glacier at large landslides.

View westward up Black Rapids Glacier at large landslides.

View west over pass between Canwell and Chistochina Glaciers. Two fault traces here may indicate the glacier ice is influencing the fault trace.

West fork of Chistochina Glacier. Denali fault trace here is parallel to the moraine, indicating that the structure of the glacier ice is influencing the surface trace of the fault.

View north of Denali fault trace at Gillette Pass. this view shows that the surface rupture reoccupies the previous fault scarp. Also the right-lateral offset of these stream gullies has developed since deglaciation in the last 10,000 years or so.

View of Denali fault trace in Chistochina River valley.

Denali fault near headwaters of Chistochina River, view to the south. Dark blur at top of photo is rotor blade.

Denali fault crossing stream near headwaters of Chistochina River. Stream offset was 4.8m. Perhaps better than the previous photo.

View south along Tok Cutoff Highway. Here the fault offset the road almost 7 meters.

View southeast along the Totschunda fault.