Long-term dynamic topographic support during post-orogenic crustal thinning revealed by stable isotope (δ18O) paleo-altimetry in eastern Pyrenees
Huyghe, Damien (Centre National de la Recherche Scientifique (França))
Mouthereau, Frédéric (Centre National de la Recherche Scientifique (França))
Ségalen, Loïc (Centre national de la recherche scientifique (França). Institut des Sciences de la Terre Paris)
Furió Bruno, Marc (Institut Català de Paleontologia Miquel Crusafont)
Universitat Autònoma de Barcelona. Departament de Geologia

Date:	2020
Abstract:	Understanding the geodynamic and Earth surface processes at the origin of post-collisional surface uplift in mountain ranges requires reconstruction of paleo-elevation. Here, we focus on the topographic evolution of the Cerdanya Basin in the eastern Pyrenees formed by post-orogenic extension during the Late Miocene. Stable isotope (δ18O) analyses of small rodent teeth and biogenic carbonates show the basin uplifted by 500 m since 6. 5 Ma. These new paleoaltitudes constraints when combined with the regional geology and geophysical data reveal the anomalously high topography of the region is the result of density changes in the sublithospheric mantle associated with crustal thinning and then opening of Gulf of Lion during the Chattian-early Burdigalian.
Note:	Altres ajuts: CERCA Programme/Generalitat de Catalunya
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Scientific reports, Vol. 10 (February 2020) , art. 2267, ISSN 2045-2322

DOI: 10.1038/s41598-020-58903-w
PMID: 32041988

8 p, 3.5 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Institut Català de Paleontologia Miquel Crusafont (ICP)
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Articles > Published articles