File:Montana 1959, M7.3 Earthquake (24374620885).jpg

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Montana 1959, M7.3 Earthquake — On August 17, 1959, Hebgen Lake, Montana was shaken with a M7.3 quake, the largest earthquake to hit Montana. This earthquake caused 28 fatalities and about $11 million in damage to highways and timber. It is characterized by extensive fault scarps, subsidence and uplift, a massive landslide, and a seiche in Hebgen Lake.

The most spectacular and disastrous effect of the earthquake was the huge avalanche of rock, soil and trees that cascaded from the steep south wall of the Madison River Canyon. This slide formed a barrier that blocked the gorge and stopped the flow of the Madison River and, within a few weeks, created a lake almost 53 meters deep.

Many summer houses in the Hebgen Lake area were damaged: houses and cabins shifted off their foundations, chimneys fell, and pipelines broke. In this photo we see the main residence of Hilgard Lodge that is almost wholly submerged in Hebgen Lake.

Learn more at: on.doi.gov/Montana1959
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Source Montana 1959, M7.3 Earthquake
Author U.S. Geological Survey from Reston, VA, USA

Licensing[edit]

This image was originally posted to Flickr by U.S. Geological Survey at https://flickr.com/photos/27784370@N05/24374620885 (archive). It was reviewed on 19 January 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark.

19 January 2018

Public domain
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

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current21:00, 19 January 2018Thumbnail for version as of 21:00, 19 January 20183,483 × 2,329 (1.06 MB)Artix Kreiger 2 (talk | contribs)Transferred from Flickr via Flickr2Commons

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