Geochronological and geochemical data from fracture-filling calcites from the Lower Pedraforca thrust sheet (SE Pyrenees)

David Cruset; Irene Cantarero; Antonio Benedicto; Cédric M John; Jaume Vergés; Richard Albert; Axel Gerdes; Anna Travé

doi:10.1016/j.dib.2020.105896

Geochronological and geochemical data from fracture-filling calcites from the Lower Pedraforca thrust sheet (SE Pyrenees)

Data Brief. 2020 Jun 20:31:105896. doi: 10.1016/j.dib.2020.105896. eCollection 2020 Aug.

Authors

David Cruset^{1

2}, Irene Cantarero¹, Antonio Benedicto³, Cédric M John⁴, Jaume Vergés², Richard Albert^{5

6}, Axel Gerdes^{5

6}, Anna Travé¹

Affiliations

¹ Departament de Mineralogia, Petrologia i Geologia Aplicada, Facultat de Ciències de la Terra, Universitat de Barcelona, (UB), Martí i Franquès s/n, 08028 Barcelona, Spain.
² Group of Dynamics of the Lithosphere (GDL). Institut de Ciències de la Terra Jaume Almera, ICTJA-CSIC, Lluís Solé i Sabaris s/n, 08028 Barcelona, Spain.
³ UMR Geops, Université Paris Sud, 91405 Orsay, France.
⁴ Department of Earth Science and Engineering, Imperial College London, SW7 2BP, United Kingdom.
⁵ Department of Geosciences, Goethe-University Frankfurt, 60438 Frankfurt am Main, Germany.
⁶ Frankfurt Isotope and Element Research Center (FIERCE), Goethe-University Frankfurt, Frankfurt am Main, Germany.

Abstract

U-Pb dating using laser ablation-inductively coupled plasma mass spectrometry (LA-ICP-MS), δ¹³C, δ¹⁸O, clumped isotopes and ⁸⁷Sr/⁸⁶Sr analysis, and electron microprobe have been applied to fracture-filling calcites and host carbonates from the Lower Pedraforca thrust sheet, in the SE Pyrenees. These data are used to determine the type and origin of migrating fluids, the evolution of the palaeohydrological system and timing of fracturing during the emplacement of this thrust sheet, as described in the article "From hydroplastic to brittle deformation: controls on fluid flow in fold and thrust belts. Insights from the Lower Pedraforca thrust sheet (SE Pyrenees)" - Marine and Petroleum Geology (2020). The integration of these data is also used to compare the fluid flow evolution of the Southern Pyrenees with that of other orogens worldwide and to generate a fluid flow model in fold and thrust belts. At a more local scale, the U-Pb dataset provides new absolute ages recording the deformation in the Lower Pedraforca thrust sheet, which was previously dated by means of indirect methods such as biostratigraphy of marine sediments and magnetostratigraphy of continental deposits.

Keywords: Fluid flow; Fluid geochemistry; SE Pyrenees; U-Pb dating.