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Deux series du precambrien superieur au Sahara central et en Arabie; le nigritien et la serie du Wadi Fatima


Deux series du precambrien superieur au Sahara central et en Arabie; le nigritien et la serie du Wadi Fatima



Pages 199-206 1958



The deposits forming the Nigritian of the central Sahara region and the Wadi Fatima series of Arabia represent the end of Precambrian sedimentation and volcanism. They were folded in the final orogenic phase of the Precambrian and later extensively peneplained. Infracambrian sediments were deposited in geosynclinal zones which developed during or at the end of the epoch of peneplanation and the Cambrian sea transgressed areas which had remained emergent during the Infracambrian.

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