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Seismic attenuation in the mantle wedge beneath super-volcanoes of the Taupo Volcanic Zone, New Zealand

Presented by Donna Eberhart-Phillips, GNS Science, Dunedin

Earthquakes are used to image 3-D seismic attenuation, which demonstrates how dehydration fluid is sourced from the subducting slab in specific regions at 150-175 and 80-100 km depth. The attenuation shows links between slab fluid flux and mantle wedge partial melt, including pathways to the TVZ rifting and melt centres. The subducting plate plays a fundamental role in subduction volcanism, and the inferred large partial melt may be related to large initial hydration during subduction of the Hikurangi Plateau.

Date Tuesday, 4 August 2020
Time 1:00pm - 1:50pm
Audience Public,All University
Event Category Sciences
LocationBenson Common Room (Gn9), Department of Geology, Dunedin Campus

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