MSN Encarta - Appalachian Mountains - The Diigo Meta page

• 03 Jun 06
  

  Iris Deters

  geography pa_state_report

  • Dynamic Map

    

    Map of Appalachian Mountains

    Appalachian Mountains or Appalachians, great mountain system of eastern North America, nearly parallel with the Atlantic coast, and extending from the province of Québec in Canada to northern Alabama. The system is 2,400 km (1,500 mi) long and varies from 160 to more than 480 km (100 to more than 300 mi) in width. Its altitude varies between 460 and nearlyy 2,040 m (1,500 and nearly 6,700 ft). The three divisions of the system—northern, central, southern—vary considerably in geologic age, having been raised by a series of crustal plate collisions that began during the Ordovician period and climaxed in the Permian (see Plate Tectonics).

    • Allegheny Mountains, along the West Virginia–Virginia border, are the westernmost ridge of the Valley and Ridge Province, and are part of the Allegheny Front.
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• 21 Apr 06
  

  Maggie Tsai

  nn penn

  • The Appalachian Mountains are heavily forested and contain deposits of iron ore, anthracite, bituminous coal, zinc, slate, limestone, asbestos, mica, granite, and emery. Along the western slope from southwestern New York through western Pennsylvania, into West Virginia, Kentucky, and Tennessee, lie coalfields.

Public Stiky Notes

• 
  Iris Deters on 2006-06-05
  Allegheny Mountains, along the West Virginia–Virginia border, are the westernmost ridge of the Valley and Ridge Province, and are part of the Allegheny Front.

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