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  4. Fold interference patterns in the Late Palaeozoic Anti-Atlas belt of Morocco
 
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Fold interference patterns in the Late Palaeozoic Anti-Atlas belt of Morocco

Auteur(s)
Burkhard, Martin
Editeur(s)
Caritg, Séverine
Ducommun, Romain
Helg, Urs
Kopp, Lionel
Sue, Christian
Date de parution
2004
In
Terra Nova, 2004/16/27-37
Résumé
We document two phases of folding within the central part of the Late Palaeozoic Anti-Atlas chain of Morocco. A first generation of SW-NE folds involve a horizontal shortening of 10-20%, accommodated by polyharmonic buckle folding of contrasting wavelengths in Ordovician Jbel Bani quartzites and Devonian Jbel Rich carbonates. A second generation of folds with similar style and wavelengths in an E-W direction lead to complex interference patterns. Dome and basins are developed within the Jbel Rich and within Lower Cambrian dolomites. Both folding phases are related to thick-skinned uplift of Precambrian basement in a Laramide style. In contrast to the typical Rocky Mountain foreland style, however, cover deformation in the Anti-Atlas is mostly decoupled from the undying basement along thick incompetent horizons such as the Lower Cambrian Lie-de-Vin and Silurian shales.
URI
https://libra.unine.ch/handle/123456789/19186
DOI
10.1111/j.1365-3121.2003.00525.x
Autre version
http://dx.doi.org/10.1111/j.1365-3121.2003.00525.x
Type de publication
Resource Types::text::journal::journal article
Dossier(s) à télécharger
 main article: Burkhard_Martin_-_Fold_interference_patterns_in_the_Lake_20050906.pdf (6.14 MB)
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