Detrital zircon U-Pb geochronology of the Magallanes-Austral Basin, Australia

Abstract: In this dataset we present detrital zircon U-Pb geochronology from the Magallanes-Austral retroarc foreland basin of Chile and Argentina (51°30’S). Detrital zircon U-Pb geochronology data show mostly Neogene (~20-40 Ma) and Cretaceous (~70-110 Ma) age groups, with minor amounts of Jurassic (~145-155 Ma) and Paleozoic (~260-540 Ma) zircons that are consistent with a syndepositional arc and recycled external-fold-and thrust belt sources.

Other Description: Leonard, J.S., Fosdick, J.C., and VanderLeest, R.A., 2020, Erosional and tectonic evolution of a retroarc orogenic wedge as revealed by sedimentary provenance: case of the Oligocene – Miocene Patagonian Andes, Front. Earth Sci., https://www.frontiersin.org/articles/10.3389/feart.2019.00353/full.