Published December 2019 | Version v1
Journal article

Le granite du sondage de Gassane (Sénégal) : un témoin de l'ouverture de l'Atlantique central au Jurassique ?

Description

We investigate the age and chemical composition of the granitic basement of the Gassane borehole in Senegal. 40 Ar/ 39 Ar and U/Pb dating yield ages of 200.3 ± 2 Ma and 198.4 ± 1.8 Ma, respectively, demonstrating that it is not related to the Variscan orogeneis as previously thought. Rather, we suggest that this granite derived from crustal anataxis caused by mafic intrusions of the central atlantic magmatic province (CAMP).

Abstract

International audience

Additional details

Created:
December 4, 2022
Modified:
December 1, 2023