U-series radioactive disequilibria 238U-230Th-226Ra : discussions on sources and processes responsible for volcanism of the Anden cordillera and on the deglaciation in Iceland

• Main Author: Chmeleff, Jérôme
• Other Authors: Laboratoire Magmas et Volcans (LMV), Observatoire de Physique du Globe de Clermont-Ferrand (OPGC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), Université Blaise Pascal - Clermont-Ferrand II, Olgeir Sigmarsson([e-mail])
• Format: Doctoral or Postdoctoral Thesis
• Language: French
• Published: HAL CCSD 2005
• Subjects: fluids; TIMS; Iceland; Geochronology; U-series disequilibria; Déséquilibres radioactifs; traçage magmatique; fluides; géochronologie; spéctrométrie de masse; Islande; Andes; adakites; [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry; Austral; Freed; Heimaey; Reykjanes; glacier; Ice cap
• Online Access: https://theses.hal.science/tel-00011187; https://theses.hal.science/tel-00011187/document; https://theses.hal.science/tel-00011187/file/These_chmeleff.pdf

Thanks to precise analyses of uranium series radioactive disequilibria, permitted by improvements of mass spectrometry data acquisition and optimization of chemistry, two questions were tackled and answers about the periods of glaciation in Iceland and the petrogenesis of andean lavas were proposed....