An emerging thermochronometer for carbonate-bearing rocks: ∆47 /(U-Pb)

Abstract

Research Article| November 09, 2018 An emerging thermochronometer for carbonate-bearing rocks: ∆47 /(U-Pb) Xavier Mangenot; Xavier Mangenot * 1IFP Energies nouvelles, 92852 Rueil-Malmaison Cedex, France2Institut de Physique du Globe de Paris, Sorbonne Paris Cité, Université Paris Diderot, UMR 7154 CNRS, F-75005 Paris, France *E-mail: xavier-mangenot@club.fr Search for other works by this author on: GSW Google Scholar Marta Gasparrini; Marta Gasparrini 1IFP Energies nouvelles, 92852 Rueil-Malmaison Cedex, France Search for other works by this author on: GSW Google Scholar Axel Gerdes; Axel Gerdes 3Institute of Geosciences, Goethe University, 60438 Frankfurt, Germany Search for other works by this author on: GSW Google Scholar Magali Bonifacie; Magali Bonifacie 2Institut de Physique du Globe de Paris, Sorbonne Paris Cité, Université Paris Diderot, UMR 7154 CNRS, F-75005 Paris, France Search for other works by this author on: GSW Google Scholar Virgile Rouchon Virgile Rouchon 1IFP Energies nouvelles, 92852 Rueil-Malmaison Cedex, France Search for other works by this author on: GSW Google Scholar Geology (2018) 46 (12): 1067–1070. https://doi.org/10.1130/G45196.1 Article history received: 24 May 2018 rev-recd: 10 Oct 2018 accepted: 22 Oct 2018 first online: 09 Nov 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Xavier Mangenot, Marta Gasparrini, Axel Gerdes, Magali Bonifacie, Virgile Rouchon; An emerging thermochronometer for carbonate-bearing rocks: ∆47 /(U-Pb). Geology 2018;; 46 (12): 1067–1070. doi: https://doi.org/10.1130/G45196.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Assessing the thermal evolution of sedimentary basins is critical for understanding the origin of natural resources (including ores, geothermal fluids, or hydrocarbons) and for deciphering larger-scale tectonic and geodynamic evolutions. Modern reconstructions of past subsurface temperatures mostly rely on thermochronometers that are not applicable to carbonate rocks [e.g., fission-track and (U-Th)/He analyses]. Here, by coupling carbonate clumped isotope (∆47) thermometry and laser ablation U-Pb geochronology on a complete paragenetic sequence, we demonstrate the applicability of an emerging thermochronometer for carbonate bearing-rocks. Paired ∆47 and U-Pb data were obtained for calcite and dolomite phases precipitated in a Middle Jurassic carbonate hydrocarbon reservoir of the Paris Basin depocenter (France). The absolute thermochronological data allow the precise reconstruction of the thermal history of these rocks: from shallow burial temperatures (∼40 °C), occurring in the Late Jurassic, toward a progressive burial and heating stage (up to 87 °C) during the Cretaceous, followed by a cooling stage (down to 69 °C) during the Tertiary uplift of the basin. The inferred time-temperature path based on Δ47/(U-Pb) data is mostly consistent with the thermal scenario independently deduced from organic maturity indicators from the underlying Lower Jurassic shales. The Δ47/(U-Pb) thermochronological data also highlight a thermal anomaly during Aptian–Albian time that requires revisiting the accepted timing for hydrocarbon migration in the Middle Jurassic reservoir carbonates. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.