publication . Other literature type . Article . 2014

Syn-rift unconformities punctuating the lower-middle Cambrian transition in the Atlas Rift, Morocco

Sébastien Clausen; M. Luisa Ribeiro; Rita Solá; Hassan Ezzouhairi; J. Javier Álvaro;
Open Access
  • Published: 28 Nov 2014
  • Publisher: Springer Science and Business Media LLC
  • Country: Portugal
Abstract
The Cambrian Tamdroust and Bab n’Ali Volcanic Complexes represent two magmatic episodes developed in the latest Ediacaran–Cambrian Atlas Rift of Morocco. Their rifting pulses were accompanied by accumulation of volcanosedimentary edifices (dominated by effusive lava flows in the former and explosive acidic aprons in the latter) associated with active tilting and uplift. Sealing of their peneplaned horst-and-graben palaeotopographies led to the onset of distinct onlapping geometries and angular discordances capping eroded basements ranging from the Ediacaran Ouarzazate Supergroup to the Cambrian Asrir Formation. Previous interpretations of these discordances as p...
Subjects
free text keywords: Vulcanismo, Discordâncias, Gondwana, Câmbrico inferior, Câmbrico médio, Atlas (cordilheira), Marrocos, General Earth and Planetary Sciences, Trilobite, biology.organism_classification, biology, Supergroup, Unconformity, Paleontology, Lava, Rift, Geology, Volcano, geography.geographical_feature_category, geography, Volcanism
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