Abstract
The evolution of fluid flow during the emplacement of the Lower Pedraforca thrust sheet has been inferred from fracture data, petrography and geochemistry of calcite cements. The reached results reveal that during the earlier compression stages, fluids migrating along the fractures were in equilibrium with their adjacent host rocks. Inversely, external fluids, displaying disequilibrium with their adjacent host rock migrated along fractures during the later emplacement stages of the thrust sheet. Similar evolution has been observed in other areas of the Pyrenees and other orogens worldwide.
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Acknowledgements
The isotopes were carried out at CCiTUB of the Universitat de Barcelona. This research was funded by the projects CGL2015-66335-C2-1-R and 2017SGR-824.
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Cruset, D., Vergés, J., Cantarero, I., Travé, A. (2019). From Rock-Buffered to Open Fluid System During Emplacement of the Lower Pedraforca Thrust Sheet (South Pyrenees). In: Doronzo, D., Schingaro, E., Armstrong-Altrin, J., Zoheir, B. (eds) Petrogenesis and Exploration of the Earth’s Interior. CAJG 2018. Advances in Science, Technology & Innovation. Springer, Cham. https://doi.org/10.1007/978-3-030-01575-6_52
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