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Field and geochemical constraints on mafic-felsic interactions, and processes in high-level arc magma chambers: An example from the Halfmoon Pluton, New Zealand

Turnbull, Rose; Weaver, Steve; Tulloch, Andrew; Cole, Jim W; Handler, Monica R.; Ireland, Trevor


The ~140 Ma Halfmoon Pluton of Stewart Island, New Zealand, provides direct evidence for a number of physico-chemical processes that operate at depth within active arc settings. It is characterized by a sequence of mingled mafic sheets and enclaves that are preserved within intermediate-felsic host-rocks. Way-up structures and textures are consistent with a younging direction to the south, and allow a south-dipping magma chamber 'stratigraphy' to be constructed.The similarity in modal...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Journal of Petrology
DOI: 10.1093/petrology/egq026


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