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Whidbey Island landslide. Washington. 2013.

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2013

Summary

The Ledgewood-Bonair Landslide, as it is also being called) on Whidbey Island, Island County, Washington occurred around 3:45 am on March 27, 2013. It is a small portion of a much larger landslide complex, approximately 1.5 miles long, that was prehistoric and may date back as far as 11,000 years. The top of the landslide scarp averages 200 feet above sea level, and the landslide pushed (uplifted) the beach as high as 30 feet above the shore. The toe (front of landslide at the beach) is slightly over 1,100 feet long and extends approximately 300 feet into Puget Sound. Uplift of the beach is presumed to have been relatively slow (i.e., over a few minutes). The volume of material moved was approximately 200,000 cubic yards (equivalent [...]

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Photo Number https://www.sciencebase.gov/vocab/category/item/identifier WhidbeyIsland6.jpg

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