Kenneth M. Cruikshank
Photographs from 1992 Landers Earthquake

Kenneth M. Cruikshank
Photographs from 1992 Landers Earthquake

Miscellaneous photographs of ground deformation from the Landers area.

1992-11-25.jpg

View North along a portion of the 'main' rupture.

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1992-11-26.jpg

Aerial view of the ares shown in the first slide.

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1992-12-15.jpg

Close up of a single rupture surface in the fault zone

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1992-12-18.jpg

The motion here was close to horizontal.

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1992-12-20.jpg

Sequence of fracrures with a right-lateral displacement.

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1992-12-23.jpg

A rock that was thrown up in the air and landed upside down.

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1992-12-35.jpg

Left- and Right-Lateral Offsets.

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1992-13-04.jpg

Another view along a rupture zone. Note the regularity.

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1992-13-05.jpg

Another view along a rupture zone. Note the regularity.

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1992-13-08.jpg

A large scarp (from horizontal movement).

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1992-13-17.jpg

Offset fence in the town of Landers.

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1992-13-18.jpg

Offset fence in the town of Landers.

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1992-13-20.jpg

Details of a crack with right lateral motion (this is how the 'cavity' is formed).

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1992-13-29.jpg

Lost another field assistant in a crack.

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1992-14-12.jpg

Offset road.

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1992-15-02.jpg

Offset road in Landers.

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1992-15-22.jpg

The 'Happy Trail' fault zone.

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1992-15-24.jpg

Fracture pattern within a smaller right-lateral fault zone.

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1992-15-25.jpg

Fracture pattern within a smaller right-lateral fault zone.

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1992-15-26.jpg

Left-Lateral displacement on a fracture in the Happy Trail zone

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1992-15-27.jpg

More of the Happy Trail zone. (Slide ID: 1992-15-27)

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1992-15-28.jpg

More of the Happy Trail zone

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1992-15-32.jpg

Aerial view of some of the rupture zone.

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1992-15-33.jpg

Aerial view of some of the rupture zone.

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1992-15-34.jpg

Aerial view of some of the rupture zone. Notice the width of the zone, and the en-echelon pattern of the rupture.

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1992-15-35.jpg

Aerial view of some of the rupture zone. Looking NE to the area shown in the beginning of this slide set.

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1992-15-36.jpg

Rupture going along the base of a hill. The hill was tilted during the earthquake.

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1992-15-37.jpg

Offset of the powerline road. Notice that one of the metal pylons has been replaced by a temporary wooden poles. The ground rupture when through the base of the pylon.

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Geology Department
http://www.pdx.edu/geology

Copyright © 1994-2015 · K.M. Cruikshank ·
http://geomechanics.geology.pdx.edu