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The Geology of Pennsylvania consists of six distinct physiographic provinces, three of which are subdivided into different sections. Each province has its own economic advantages and geologic hazards and plays an important role in shaping everyday life in the state.
The following is a list of the mapped bedrock units in Pennsylvania. The rocks are listed in stratigraphic order. ... Formation name Member name Map symbol [2 ...
All of Bedford County lies far to the south of the terminal moraine, and thus it was never glaciated (PA Geological Survey Map 59). However, during the Pleistocene epoch, or "Ice Age," periglacial (meaning "around glacier" or simply "cold") processes dominated. Most of the county was most likely a tundra at that time. The many boulder fields ...
Counties (in red) in the Endless Mountains region of Northeastern Pennsylvania. The Endless Mountains is a geographical, geological, and cultural region in Northeastern Pennsylvania. [1] The Endless Mountains region includes Bradford, Sullivan, Susquehanna,and Wyoming counties.
An 1836 map of Pennsylvania's counties The Federal Information Processing Standard (FIPS) code, used by the U.S. government to uniquely identify counties, is provided with each entry. FIPS codes are five-digit numbers; for Pennsylvania the codes start with 42 and are completed with the three-digit county code.
The Gettysburg Formation is a mapped bedrock unit consisting primarily of sandstones, conglomerates, and shales.. The Gettysburg Formation was first described in the Gettysburg area of Adams County, Pennsylvania in 1929, [1] and over the following decade was mapped in adjacent York County, Pennsylvania [4] and Frederick County, Maryland. [5]
The Cambrian Hardyston Formation or Hardyston Quartzite is a mapped bedrock unit in Pennsylvania and New Jersey. It was originally described by Wolff and Brooks in 1898, [ 1 ] where two outcrops in Hardyston Township , Sussex County, New Jersey , were described.
The Pennsylvanian Pottsville Formation is a mapped bedrock unit in Pennsylvania, western Maryland, West Virginia, Ohio, and Alabama.It is a major ridge-former in the Ridge-and-Valley Appalachians of the eastern United States. [3]