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U-Pb dating of zircon in hydrothermally altered rocks of the Kawerau Geothermal Field, Taupo Volcanic Zone, New Zealand

Milicich, S.D.; Wilson, C.J.N.; Bignall, G.; Pezaro, B.; Charlier, B L A; Wooden, Joseph L.; Ireland, Trevor


Crystallisation-age spectra have been obtained by SIMS techniques (SHRIMP-RG) on zircons from altered volcanic units penetrated by drillholes at Kawerau Geothermal Field in the central Taupo Volcanic Zone (TVZ), New Zealand. Drillholes penetrate 700-1300. m of volcanic rocks and sediments before reaching the basement Mesozoic greywacke. Twenty-seven samples of altered volcanic lithologies and two surficial, fresh rock units have been studied in order to constrain ages of the major stratigraphic...[Show more]

CollectionsANU Research Publications
Date published: 2013
Type: Journal article
Source: Journal of Volcanology and Geothermal Research
DOI: 10.1016/j.jvolgeores.2012.12.016


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