Reports

Kinematics of Late Paleozoic Continental Collision Between Laurentia and Gondwana

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Science  21 Dec 1990:
Vol. 250, Issue 4988, pp. 1702-1705
DOI: 10.1126/science.250.4988.1702

Abstract

In the Appalachians, late Paleozoic Alleghanian orogenesis is widely regarded as resulting from dextral oblique collision between irregular margins of Gondwana and Laurentia. However, this relative plate motion cannot account for coeval convergence in the Ouachitas and Variscides and is incompatible with some tectonic transport indicators in the Appalachians. An alternative kinematic model is proposed in which early sinistral transpression in the Appalachians is followed by counterclockwise rotation of Gondwana and the development of a system of dextral strike-slip faults extending from southern Europe to Alabama.

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