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Influence of the crust and crustal structure on the location and composition of high-alumina basalts of the Taupo Volcanic Zone, New Zealand

Hiess, Joe; Cole, Jim W; Spinks, K D


High-alumina basalts (HABs) that occur throughout the central part of the Taupo Volcanic Zone (TVZ) are associated particularly with faulting, and many occur where faults intersect caldera margins. For convenience, the basalts are described in terms of three geographic-tectonic segments: Okataina in the north, Kapenga in the middle, and Taupo in the south. Evidence for mixing and mingling between rising basaltic magmas and rhyolitic rocks and magmas is common, including the frequent occurrence...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: New Zealand Journal of Geology and Geophysics


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