Journal article
Quaternary volcanic evolution in the continental back-arc of southern Mendoza, Argentina
VR May, AR Chivas, A Dosseto, M Honda, EL Matchan, D Phillips, DM Price
Journal of South American Earth Sciences | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2018
Abstract
The Payenia Basaltic Province (PBP) is the largest and the northernmost of the Quaternary back-arc Patagonian basaltic provinces in South America. In the last 10 years, several studies have investigated either, the geochemistry or the geochronology of this basaltic province. However, only a few investigations have focused on the two aspects simultaneously in order to reconstruct its Quaternary volcanic history. Consequently, this study aims to provide new Quaternary ages and to contribute in understanding how its geochemistry evolved though time. In the current study nine basaltic flows from the PBP in central west Argentina were dated using a combination of cosmogenic surface exposure, 40Ar..
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Funding Acknowledgements
We acknowledge the Renewable Natural Resources division of the Province of Mendoza for providing access permits. We thank the park rangers at Llancanelo and Payunia Provincial Natural Reserve (Mendoza), Leandro Rojo, Alberto Quezada, Laura Piastrellini, Marcelino Azaguate, Luis Lopez, Daniel Espanon, Stephanie Kerr, Paul Connolly, Adriana Garcia and Ryan Manton for their assistance during field trips. The fieldwork component of this study was funded in part by a short-term mobility scholarship for field training in young geological processes from the then Department of Industry, Innovation, Science, Research and Tertiary Education of the Australian Government. The Ar-Ar dating part of this study was funded by GeoQuEST, University of Wollongong, Australia