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  2. Geology of Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Pennsylvania

    The proposal however, was not approved by the state legislature. [4] [5] Pennsylvania is also home to the famous Drake Oil Well in Titusville which helped give rise to the modern oil industry and two brand name motor oils, Quaker State (now owned by Royal Dutch Shell) and Pennzoil. Pennsylvania also has reserves of natural gas from both deeply ...

  3. List of mapped rock formations in Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/List_of_mapped_rock...

    The following is a list of the mapped bedrock units in Pennsylvania. The rocks are listed in stratigraphic order. ... Group name Formation name Member name Map symbol ...

  4. List of state routes in Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/List_of_state_routes_in...

    The United States Numbered Highways were assigned in late 1926, and in 1928 State Routes concurrent with U.S. Routes were removed, while those that conflicted with U.S. Routes were assigned new numbers. In 1946, a mass decommissioning of highways around the state occurred, and many state routes were decommissioned, truncated, or rerouted.

  5. 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.

  6. Great Appalachian Valley - Wikipedia

    en.wikipedia.org/wiki/Great_Appalachian_Valley

    Blue Mountain in the Lehigh Valley region of eastern Pennsylvania Bald Eagle State Forest in Union County, Pennsylvania. In its northern section, the Great Valley includes the Champlain Valley around Lake Champlain and the upper Richelieu River that drains it into the Saint Lawrence, the Hudson River Valley, Newburgh Valley, and Wallkill Valley, and the Kittatinny Valley, Upper Delaware River ...

  7. Gaps of the Allegheny - Wikipedia

    en.wikipedia.org/wiki/Gaps_of_the_Allegheny

    The gaps of the Allegheny, [1] [2] meaning gaps in the Allegheny Ridge (now given the technical name Allegheny Front) in west-central Pennsylvania, is a series of escarpment eroding water gaps (notches or small valleys) along the saddle between two higher barrier ridge-lines in the eastern face atop the Allegheny Ridge or Allegheny Front ...

  8. Pennsylvania State Route System - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_State_Route...

    PA Routes are also called Pennsylvania Traffic Routes, and formerly State Highway Routes. [ 2 ] There are 41,643 mi (67,018 km) of roadway maintained by state agencies, with 39,737 mi (63,951 km) maintained by PennDOT, 554 mi (892 km) maintained by the Pennsylvania Turnpike Commission , and 1,352 mi (2,176 km) maintained by other state agencies.

  9. Pennsylvania Geological Survey - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_Geological_Survey

    The Pennsylvania Geological Survey, or Bureau of Topographic and Geologic Survey (BTGS), is a geological survey enacted by the Pennsylvania General Assembly "to serve the citizens of Pennsylvania by collecting, preserving, and disseminating impartial information on the Commonwealth's geology, geologic resources, and topography in order to contribute to the understanding, wise use, and ...