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  2. Geology of Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Pennsylvania

    The state's Ridge and Valley province is home to one of Pennsylvania's most profitable coal fields in history, containing high-grade anthracite coal. The sediments deposited during the Mississippian Period came from highlands located to the southeast. Waves of mountain-building occasionally brought coarser-grained sediments onto the plain.

  3. Ridge-and-Valley Appalachians - Wikipedia

    en.wikipedia.org/wiki/Ridge-and-Valley_Appalachians

    An aerial view of Bedford County, Pennsylvania, showing (from center to right): Wills, Evitts, and Tussey Mountains in December 2006 The Province extends from southeastern New York in the north through northwestern New Jersey , westward into Pennsylvania through the Lehigh Valley , and southward into Maryland , West Virginia , Virginia ...

  4. List of counties in Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/List_of_counties_in...

    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.

  5. Regions of Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Regions_of_Pennsylvania

    Counties constituting the Endless Mountains Region of Pennsylvania. The Endless Mountains are a chain of mountains in Northeastern Pennsylvania that are part of the Appalachian Mountains chain. The mountains are not true mountains, geologically speaking, but are a dissected plateau and part of the Allegheny Plateau, along with the higher ...

  6. Blue Mountain (Pennsylvania) - Wikipedia

    en.wikipedia.org/wiki/Blue_Mountain_(Pennsylvania)

    Blue Mountain, Blue Mountain Ridge, or the Blue Mountains of Pennsylvania is a ridge of the Appalachian Mountains in eastern Pennsylvania.Forming the southern and eastern edge of the Ridge-and-Valley Appalachians physiographic province in Pennsylvania, Blue Mountain extends 150 miles (240 km) from the Delaware Water Gap on the New Jersey border in the east to Big Gap in Franklin County in ...

  7. South Mountain (Eastern Pennsylvania) - Wikipedia

    en.wikipedia.org/wiki/South_Mountain_(eastern...

    The mountain is a core geographic feature throughout much of the Pennsylvania side of the Lehigh Valley. The mountain is called the Reading Prong by geologists. [4] Unlike Blue Mountain to its north, South Mountain does not follow a straight geographic line. The mountain ranges in elevation between 500 and 1,300 feet (150 and 400 m) above sea ...

  8. Geology of Bedford County, Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Bedford_County...

    The river flows to the east through the mountains within the county through several water gaps caused by a group of faults trending east–west through the central part of the county. The river then turns north and flows into Raystown Lake in Huntingdon County. The southern third of the county is drained by several tributaries of the Potomac River.

  9. Pennsylvania Highlands Region - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_Highlands_Region

    Counties comprising the Pennsylvania Highlands Region. The Pennsylvania Highlands region is a section of the Appalachian Mountains located in Eastern Pennsylvania frequently cited as a candidate for extensive ecological preservation. The region is home to around 5 million people, with majority of it residing within the eastern half it.