Image:Block-glide.jpg

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[edit] Summary

Block glide at Mile Marker 23 along I-99 in Blair County, Pennsylvania. Part of a hill of Devonian shale was removed to make the road, forming a dip-slope. The upper block detached along a bedding plane and is sliding down the hill, forming a jumbled pile of rock at the toe of the slide. Photo taken in 1997 and uploaded by James Stuby.

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	Date/Time	Dimensions	User	Comment
current	14:52, 11 May 2007	777×410 (294 KB)	Jstuby (Talk \| contribs)	(Block glide at Mile Marker 23 along I-99 in Blair County, Pennsylvania. Part of a hill of Devonian shale was removed to make the road, forming a dip-slope. The upper block detached along a bedding plane and )