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Stratigraphy and structure of the Ngatamariki geothermal system from new zircon U-Pb geochronology: Implications for Taupo Volcanic Zone evolution

Chambefort, I; Lewis, B; Wilson, C.J.N.; Rae, A J; Coutts, C; Bignall, G.; Ireland, Trevor

Description

Recent drilling at the Ngatamariki Geothermal Field, Taupo Volcanic Zone, New Zealand has provided new constraints on the stratigraphy and volcanic evolution of the region. Over 2800m thickness of volcanic products are present at Ngatamariki, mainly comprised of rhyolitic ignimbrites linked to large caldera-forming events at sources outside the field area, but locally sourced andesite and rhyolite lavas and domes are also encountered. Most of the rocks are allocated to the pre-0.35Ma Tahorakuri...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
URI: http://hdl.handle.net/1885/71188
Source: Journal of Volcanology and Geothermal Research
DOI: 10.1016/j.jvolgeores.2014.01.015

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