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  2. Geology of Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Pennsylvania

    [2] Pleistocene glaciers have also repeatedly visited the state over the last 100,000 years. These glaciers have left some evidence and carved out much of the landscape of the northern tier of the state. [2] A rock with high economic value from Pennsylvania is anthracite coal. Before mining began, there was an estimated 22.8 billion tons of ...

  3. Ridge-and-Valley Appalachians - Wikipedia

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

    The Valley and Ridge Province was formed during the Alleghanian orogeny, a mountain-building event that occurred between 325 and 260 million years ago. [2] The rocks in the region were subjected to immense pressure and heat, causing them to deform and fold.

  4. Regions of Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Regions_of_Pennsylvania

    The Poconos, or the Pocono Mountains region, is a mountainous region of about 2,400 square miles (6,200 km 2) located in Northeastern Pennsylvania, approximately 30 miles north of Allentown, which is a nationally popular recreational winter destination for skiing, snowboarding, and other winter sports and (in off-season months) for hiking ...

  5. List of mountains of the Alleghenies - Wikipedia

    en.wikipedia.org/wiki/List_of_mountains_of_the...

    The range of the Allegheny Mountains is part of the Ridge-and-Valley Appalachians, a physiographic region of the much larger Appalachian Mountain Range. From northeast to southwest, with ridges and summits of the Eastern Continental Divide in italics: [specify] Bald Eagle Mountain, Pennsylvania; Wopsononock Mountain, Pennsylvania; Brush ...

  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. Evitts Mountain - Wikipedia

    en.wikipedia.org/wiki/Evitts_Mountain

    The ridge line runs north from Rocky Gap State Park in Maryland, across the Mason–Dixon line into Pennsylvania and then to the west Martin Hill, passing very near Tussey Mountain in Snake Spring Valley. The ridge then turns west, wrapping around north of Bedford, Pennsylvania to its intersection with Dunning Mountain, dividing Dunning Cove ...

  8. Geography of Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Geography_of_Pennsylvania

    The Pennsylvania Dutch region in south-central Pennsylvania is a favorite for sightseers. The Pennsylvania Dutch, including the Amish, Mennonites, and at least 15 other sects are common in the rural areas around the cities of Lancaster, York, and Harrisburg with smaller populations extending northeast to the Lehigh Valley and up to the Susquehanna Valley.

  9. Bald Eagle Mountain - Wikipedia

    en.wikipedia.org/wiki/Bald_Eagle_Mountain

    Bald Eagle Mountain is in the western part of the Ridge and Valley province of the Appalachian Mountains. Brush Mountain and the neighboring Nittany Mountain and Tussey Mountain ridges are part of the same Paleozoic anticline, the limbs of which consist of the older Ordovician Bald Eagle Formation (), Juniata Formation (interbedded sandstone and shale), and younger Silurian Tuscarora Formation ...