Persistent paléosurfaces in the basement of French Massif Central: geodynamic implications.

Médard Thiry (1) , Hervé Théveniaut (2) , Regine Simon-Coinçon (1) , Caroline Ricordel-Prognon (2) , Fabien Lenoir (2) , France Lagroix (3)

1 GEOSCIENCES - Centre de Géosciences
2 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)
3 IPGP - Institut de Physique du Globe de Paris

The siderolithic paleoweathering surfaces of the French Central Massif have been dated to the Late Jurassic/Early Cretaceous, contrasting with previously accepted Tertiary age and implying that the Massif has never hosted a thick sedimentary cover. This contradicts with former thermochronological results. Herein, we expose the arguments for and against the proposed geodynamic evolution of the French Massif Central constrained by paleomagnetic age determinations.

Mots clés: French Central Massif; paleoweathering; siderolithic; paleomagnetism

Mots clés: paléoaltération; paléosurface; datation; paléomagnétisme; Crétacé; géodynamique

Domaines: Sciences de la Terre

Médard Thiry, Hervé Théveniaut, Regine Simon-Coinçon, Caroline Ricordel-Prognon, Fabien Lenoir, et al.. Persistent paléosurfaces in the basement of French Massif Central: geodynamic implications.. Diagénèse: avancées récentes et perspectives, Association des Sédimentologistes Français (ASF), Jul 2014, Orsay, France. p. 113-117. ⟨hal-01087371⟩