From Rock-Buffered to Open Fluid System During Emplacement of the Lower Pedraforca Thrust Sheet (South Pyrenees)
- 286 Downloads
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.
KeywordsSouth pyrenean fold and thrust belt Fluids Fractures
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.
- 1.Roure, F., Andriessen, P., Callot, J.P., Faure, J.L., Ferket, H., Gonzales, E., Guilhaumou, N., Lacombe, O., Malandain, J., Sassi, W., Schneider, F., Swennen, R., Vilasi, N.: The use of paleo-thermo-barometers and coupled thermal, fluid flow and pore-fluid pressure modelling for hydrocarbon and reservoir prediction in fold and thrust belts. In: Goffey, G.P., Craig, J., Needham, T., Scott, R. (eds.) Hydrocarbons in Contractional Belts, pp. 87–114. Geological Society, Special Publications, London (2010)Google Scholar
- 3.Vergés, J.: Estudi geològic del vessant sud del Pirineu oriental i central. Evolució 947 cinemàtica en 3D. Ph.D. thesis, Universitat de Barcelona, 203 pp (1993)Google Scholar
- 5.Casini, G., Gillespie, P.A., Vergés, J., Romaire, I., Fernández, N., Casciello, E., Saura, E., Mehl, C., Homke, S., Embry, J.-C., Aghajari, L., Hunt, D.W.: Sub-seismic fractures in Foreland fold and thrust belts: insight from the Lurestan Province, Zagros Mountains. Iran. Petrol. Geosci. 17, 263–282 (2011)CrossRefGoogle Scholar