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The Northeastward Termination of the Appalachian Orogen

  • Harold Williams
  • M. J. Kennedy
  • E. R. W. Neale

Abstract

The Appalachian orogen is a northeast-trending belt of deformed rocks that lies southeast of the Canadian Shield and Interior Platform of central North America (Fig. 1). The northernmost part of the orogen is bounded to the east by the Atlantic Ocean, and its southern part is overlain toward the east by Mesozoic sediments of the Atlantic coastal plain. The mountain belt has an exposed area of 125,000 square miles in eastern Canada and extends from Newfoundland 2000 miles southwestward along the Atlantic seaboard to Alabama in the southeast United States. The submerged offshore extensions of the orogen are covered by Mesozoic and Cenozoic sediments that form the Atlantic continental shelf. Presumably, the Appalachian orogen was once continuous with the Caledonian Mountain System which consists of similar rocks with similar structural styles in Ireland and the United Kingdom on the eastern side of the North Atlantic.

Keywords

Volcanic Rock Nova Scotia Granitic Rock Silurian Rock Pillow Lava 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1974

Authors and Affiliations

  • Harold Williams
    • 1
  • M. J. Kennedy
    • 1
  • E. R. W. Neale
    • 1
  1. 1.Department of GeologyMemorial University of NewfoundlandSt. JohnsCanada

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