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Titre du Document
Compressional tectonic controls on Epicontinental black-shale deposition : Devonian-Mississippian examples from North America
Auteur(s)
ETTENSOHN F. R. ; Schieber Jürgen (Editeur scientifique) ; Zimmerle Winfried (Editeur scientifique) ; ...
Résumé
Epicontinental black-shale deposition spanned nearly one-quarter of North American parts of Laurussia during Late Devonian-Early Mississippian time. These shale deposits can be divided geographically into three, large-scale, basin complexes centered on foreland or peripheral basins that developed largely in response to deformational loading during three partially coeval compressional orogenies. The age and distribution of the shales support the strong influence of respective orogenies. The progressive westward spread of black-shale deposition in the Appalachian basin at this time, as well as migration of black-shale deposition into the sequentially yoked Michigan and Illinois basins, in part reflect flexural interactions and subsidence related to the Acadian orogeny. The southwestward extension of similar black-shale deposition beyond the Appalachian basin into Mississippi, Arkansas, Texas, Oklahoma, New Mexico, Arizona, Kansas, and westem Missouri reflects development of the Ouachita peripheral basin and the subsequent yoking of the Salina and Forest City basins during inception of Ouachita convergence in latest Devonian to Early Mississippian time. By Late Devonian time, moreover, the southward migration of the Antler orogeny onto U.S. parts of the Cordilleran margin similarly generated a subsiding foreland basin and ideal conditions for black-shale deposition in parts of that basin; almost simultaneously black-shale deposition spread eastward into the yoked Williston basin
Editeur
E. Schweizerbart'sche Verlagsbuchhandlung
Identifiant
ISSN : ISBN : 3-510-65181-2/3-510-65183-9
Source
A. 1998, pp. 109-128 [Illustrations : Illustration] [bibl. : 3 p.]
Langue
Anglais
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