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Science 29 October 1993:
Vol. 262. no. 5134, pp. 732 - 734
DOI: 10.1126/science.262.5134.732
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Articles

Mississippian Fossils from Southern Appalachian Metamorphic Rocks and Their Implications for Late Paleozoic Tectonic Evolution

Robert A. Gastaldo 1, Gregory M. Guthrie 1, Mark G. Steltenpohl 1, R. A. Gastaldo 1, and M. G. Steltenpohl 1

1 Department of Geology, Auburn University, Auburn, AL 36849-5305. G. M. Guthrie, Geological Survey of Alabama, Tuscaloosa, AL 35486-9780

Fossils of Periastron reticulatum Unger emended. Beck recovered from the Erin Slate of the Talladega slate belt of Alabama establish that these rocks have a Mississippian (Kinderhookian-Tournaisian) age. The Talladega slate belt, the southwestern extension of the western Blue Ridge belt, was interpreted to have been affected by regional dynamothermal metamorphism and coeval deformation as a result of the Acadian orogeny. This fossil find indicates that metamorphism and deformation of the Talladega belt occurred after the Early Carboniferous (Alleghanian), requiring a reevaluation of tectonic interpretations of the southernmost Appalachians.

Submitted on May 25, 1993
Accepted on September 1, 1993


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Gondwanan/peri-Gondwanan origin for the Uchee terrane, Alabama and Georgia: Carolina zone or Suwannee terrane(?) and its suture with Grenvillian basement of the Pine Mountain window.
M. G. Steltenpohl, P. M. Mueller, A. L. Heatherington, T. B. Hanley, and J. L. Wooden (2008)
Geosphere 4, 131-144
   Abstract »    Full Text »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)