The structural architecture of the footwall to the Main Uralian Fault, southern Urals

Published on Apr 1, 1996in Earth-Science Reviews9.53
· DOI :10.1016/0012-8252(95)00051-8
Dennis Brown25
Estimated H-index: 25
(CSIC: Spanish National Research Council),
V. N. Puchkov15
Estimated H-index: 15
(RAS: Russian Academy of Sciences)
+ 1 AuthorsAndrés Pérez-Estaún26
Estimated H-index: 26
(CSIC: Spanish National Research Council)
Abstract The Uralide orogen is a linear collisional belt formed during the Upper Paleozoic as a result of convergence between the East European Craton and outboard terranes, and accretion of intervening island arcs and obduction of oceanic crust onto the East European Craton. This paper presents a new structural subdivision of the southern Urals, to the west of the main suture zone, that puts this part of the mountain belt in a context similar to that of other collisional orogenic belts. This subdivision consists of a west-vergent thrust stack that is made up of an autochthonous to parautochthonous foreland basin, and a parautochthonous foreland thrust and fold belt, flanked to the east by a metamorphic thrust stack. The latter units are structurally overlain by allochthonous rocks of an accretionary complex, slope sediments, oceanic crust and high grade, eclogite-blueschist-bearing, gneiss. Where possible these units are defined on the basis of their internal stratigraphy and structure and on the nature of their bounding faults.
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