Subduction cycling and its controls on hyperactive volcanism in the Taupo Volcanic Zone, New Zealand
A seminar presented by Carlos Santa Cruz of Massey University.
The Pleistocene to Holocene Taupo Volcanic Zone (TVZ) is one of the most active volcanic areas in the world.
The TVZ is dominated by felsic volcanism with more than 95 per cent of the total eruptive volume corresponding to rhyolitic magmas.
To generate such volumes of intermediate and felsic magma compositions, crustal assimilation and fractional crystallisation (AFC) of primary mafic magmas has previously been invoked to generate the chemical and isotopic characteristics of these magmas.
The goal of this project is to combine major and trace elements as well as isotopic compositions of selected samples of the TVZ in order to provide information about magma generation and modification processes occurring in the mantle and crust.
Streaming details:
Zoom link: https://bit.ly/otagogeology