Hydrothermal fluid circulations in the western Pyrenees: new data on stable isotopes, in-situ gas analysis and fluid inclusions

Guillaume Barré, Alexy Elias-Bahnan, Geoffrey Motte, Maxime Ducoux, Guilhem Hoareau, Dimitri Laurent, Eric C. Gaucher, O. Shouakar-Stash, O. Chudaev, Y. Kharaka, R. Harmon, R. Millot
2019 E3S Web of Conferences  
Several fluid circulation events are recorded in the Aquitaine Basin and the Chaînons Béarnais in the Pyrenean belt of southwestern France. Different fluid types are found in all locations studied. The main difference comes from the thermal peak event (rifting), which was more intense in the Chaînons Béarnais close to the exhumed mantle zone. In situ gas analysis associated of fluid inclusions and isotopic (C, O, H, S) analyses show that similar fluids are generated in both systems, although
more » ... ystems, although separated by deep structures, e.g. the North Pyrenean Frontal Thrust (NPFT). The Pyrenean tectonic history leads to the compartmentalization of fluid circulations.
doi:10.1051/e3sconf/20199801001 fatcat:hwhqzfcffzc3bbifihjqnp2gie