Saturday, June 13, 2015

Sideling Hill Roadcut, Ridge-and-Valley province, Appalachian Mountains, Maryland

Sidling Hill Geology 
Sidling Hill Geology by Mike Fitzpatrick

Sideling Hill is a syncline mountain, in a region of downward-folded (synclinal) rock strata between two upfolded anticlines. The ridge is capped by an erosion-resistant conglomerate and sandstone of Mississippian (early Carboniferous) geologic age, the Purslane Sandstone of the Pocono Formation. The ridge's slopes are formed of much more easily eroded kinds of rock, including the Devonian-Mississippian Rockwell Formation, with long, narrow valleys paralleling the ridge on either side. (Wikipedia)

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