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The red-green-gray sedimentary rocks of the Catskill Formation are the predominant bedrock type in the Poconos. The elevation of the plateau is between 1,200 feet (366 m) and 2,300 feet (701 m) with only a few steep hills such as Camelback Mountain. Much of the rock sits in gently dipping horizontal beds, unlike the neighboring Appalachian ...
The following is a list of the mapped bedrock units in Pennsylvania. The rocks are listed in stratigraphic order. The rocks are listed in stratigraphic order. [ 1 ]
Stone fortification and mounds at the Devil's Backbone rock formation. Devil's Backbone is a rock formation and peninsula formed by the flow of Fourteen Mile Creek into the Ohio River, and is currently situated in Charlestown State Park near Charlestown, Indiana, and across the Ohio River from Louisville, Kentucky.
Chestnut Ridge rises in southern Indiana County and continues to the south-southwest for approximately 75 miles. The ridge crosses Westmoreland County and Fayette County into West Virginia then gradually disappears into a series of hills and finally ends roughly 5 miles (8.0 km) southeast of Morgantown, West Virginia.
The bedrock along the axis is the Devonian Onondaga Formation and Old Port Formation, consisting primarily of sandstone. [1] The crest of the hill is at approximately 1,700 feet (520 m) elevation. The New Enterprise Stone & Lime Co., Inc. New Paris Quarry (inactive) is located on the northwest flank of the ridge.
The disturbance is 12.5 kilometres (7.8 mi) in diameter. The bedrock has a thin layer of glacial till, with a maximum depth of 40 metres (130 ft) in the depression ring. The bedrock around the impact structure is generally flat with a slight dip towards the southwest and the Illinois Basin.
Indiana is a borough in and the county seat of Indiana County, Pennsylvania, United States. [3] The population was 14,044 at the 2020 census. [4] It is the principal city of the Indiana, Pennsylvania micropolitan area, about 46 miles (74 km) northeast of Pittsburgh. [5]
Canisteo River Valley from Pinnacle State Park in Steuben County, New York. Glaciation in this area of the plateau removed the sharp relief that is seen in the plateau's unglaciated areas.