Title: Superimposed extensional tectonics in the Argana Triassic formations (Morocco), related to the early rifting of the Central Atlantic
Abstract:The first Mesozoic beds in the western Atlas (Morocco) are the Triassic redformations of the Argana valley. The present study was carried out in order to determine the tectonic pattern, especially in ...The first Mesozoic beds in the western Atlas (Morocco) are the Triassic redformations of the Argana valley. The present study was carried out in order to determine the tectonic pattern, especially in the lowermost formations, related to the rifting of the Central Atlantic and to the creation of the Atlas trough. The main results are: (1) from the stratigraphic point of view, the lowermost formation (the Ikakern Formation) is probably of early Triassic age; (2) the sediments of this formation were deposited in an ENE–WSW trending basin affected by northward-tilted blocks delimited by almost pure normal faults; (3) this basin, whose trend was oblique to the younger Atlantic rift, represents a failed branch of the Atlas trough; (4) the “Atlantic stage” corresponds to the creation of a NNE-SSW trending basin superimposed on the first, and the sediments were, in this area, tilted to the west by a major end-Triassic extensional event, just before the extrusion of the basalts.Read More
Publication Year: 1991
Publication Date: 1991-09-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 42
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