Combined U-Pb zircon geochronology & Lu-Hf analysis of Jurassic-Cretaceous volcanics and sandstones from the Lord Howe Rise and Queensland Plateau, Australia (Old ID 22185)

Principal Investigator

We prosed to combine zircon geochronology on putative Cretaceous volcanics reported in the DSDP Leg 21-207 and combine this with more ambitious dual Lu-Hf isotope and U-Pb isotope analysis on detrital zircons collected from a suite of Cretaceous and Paleogene sedimentary rock samples in cores from DSDP Leg 21-206, 207, 208 and 209. This approach is designed to identify the distribution of ages and geochemical signatures associated with earlies Cretaceous-Jurassic age detrital zircons (and volcanics) in order to better understand the timing of Cretaceous-Jurassic volcanism, the possible provenance of Cretaceous-Jurassic volcanic sources and to glean a better understanding of the nature of the magmatism during the Jurassic and Early Cretaceous along eastern Australia.

01 Aug 2015 - 31 Dec 2016

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