Contribution a l'etude geologique des guelb Bou Leriah (region d'Aoucert, Sahara Espagnol)

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Abstract
A Paleozoic autochthon in the Bou Leriah-Aoucert area of the southern Spanish Sahara comprises Ordovician (?) sandstone and quartzite, Silurian limestone, and a lower Devonian series of alternating shale, sandstone, fossiliferous limestone, and phosphate beds. The autochthon is progressively more folded toward the west, and becomes increasingly fissured and brecciated upward with approach to the mylonitized gliding zone. The overlying allochthon is sericitized quartzite and schist of undetermined age. The tangential tectonic deformation is post-lower Devonian, and probably is Frasnian (upper Devonian).

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