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Image: Cypress collapsed

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Cypress_collapsed.jpg ‎(600 × 401 pixels, file size: 70 KB, MIME type: image/jpeg)

Description: Collapsed Cypress Street Viaduct. Caption: The Cypress Structure, the freeway approach to the Bay Bridge from Oakland, collapsed during the Loma Prieta earthquake, killing 42 people. At least two properties of the Earth's crust conspired to cause this collapse: it was built on loose soils that shook much more strongly than surrounding regions on stronger ground, and variations in the thickness of the Earth's crust between the epicenter of the Loma Prieta earthquake in the Santa Cruz Mountains and Oakland actually focused energy toward Oakland and downtown San Francisco.
Title: Cypress collapsed
Credit: https://earthquake.usgs.gov/regional/nca/3Dgeologic/
Author: USGS.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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