SHRIMP U–Pb results. Zircon O- and Hf-isotope constraints on the genesis and tectonic significance of Permian magmatism in Patagonia CastilloPaula FanningC. Mark PankhurstRobert J. HervéFrancisco RapelaCarlos W. 2017 Summary of SHRIMP U–Pb results for zircon from sample CAT50–1905