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Article dans une revue
Review of the Ediacaran-Lower Ordovician (pre-Sardic) stratigraphic framework of the Eastern Pyrenees, southwestern Europe
Abstract : The Ediacaran-Lower Ordovician successions exposed in the Eastern Pyrenees are updated and revised based on recent U-Pb zircon radiometric ages, intertonguing relationships of carbonate-dominated strata, and onlapping patterns marking the top of volcano-sedimentary complexes. A stratigraphic comparison with neighbouring pre-Variscan outcrops from the Montagne Noire (southern French Massif Central) and Sardinia is related to i) the absence of Cadomian deformation close to the Ediacaran-Cambrian boundary interval; ii) the presence of an episodic, Cadomian-related, acidic-dominant volcanism related to carbonate production punctuating the Ediacaran-Cambrian transition, similar to that recorded in the northern Montagne Noire; and iii) the lack of Guzhangian (Cambrian Epoch 3) regressive shoal complexes present in the Montagne Noire and probably in Sardinia
Littérature citée [89 références]
https://hal-brgm.archives-ouvertes.fr/hal-02309563
Contributeur : Maxime Padel <>
Soumis le : mercredi 9 octobre 2019 - 13:17:17
Dernière modification le : mercredi 16 octobre 2019 - 01:23:47
Contributeur : Maxime Padel <>
Soumis le : mercredi 9 octobre 2019 - 13:17:17
Dernière modification le : mercredi 16 octobre 2019 - 01:23:47
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