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Title: Extensional Crack

Description: Northwest-trending extensional crack where dam fill settled about 0.6 m (2 ft) and pulled away from concrete spillway and north abutment of Austrian Dam.

Location: Santa Cruz Mountains, CA, USA

Date Taken: Oct 17 1989

Photographer: R.J. McLaughlin , U.S. Geological Survey

Usage: This image is public domain/of free use unless otherwise stated. Please refer to the USGS Copyright section for how to credit the photo.

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Tags: Loma Prieta cracks earthquake