Mobile salts reroute sedimentary pathways in the Moroccan Atlantic margin

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Authors

Remi J.G. Charton , Christian Kluge, David Fernández-Blanco , Aude Duval-Arnould, Giovanni Bertotti

Abstract

The sedimentary architecture of the Essaouira-Agadir Basin in Morocco is strongly influenced by development of Atlasic and Atlantic early Mesozoic riftings. The basin is now part of the Western High Atlas after Alpine exhumation and exposes several salt-cored anticlines perpendicular to the NW Africa coast. We study two of these salt-cored anticlines to understand how their tectonic evolution influence seaward sediment pathways during Mesozoic exhumation of long-lived sedimentary sources in the hinterlands. We gather structural data in Google Earth and use it in Move 2D to derive the thickness of sedimentary units in both E-W salt-cored anticlines. Results show salt mobilisation and topographic growth of these anticlines diverge the sedimentary routing of paleodrainages during the Early to Middle Jurassic exhumation of the Moroccan hinterland, and thus suggest a causal relationship.

DOI

https://doi.org/10.31223/osf.io/9zvak

Subjects

Earth Sciences, Geology, Physical Sciences and Mathematics

Keywords

channelizing sedimentary pathways, Essaouira Agadir Basin, Moroccan passive margin

Dates

Published: 2020-06-16 18:05

Last Updated: 2020-06-23 08:23

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License

CC BY Attribution 4.0 International

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