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Hf-Nd-Pb isotope evidence from Permian arc rocks for the long-term presence of the Indian-Pacific mantle boundary in the SW Pacific

Nebel, Oliver; Munker, Carsten; Nebel-Jacobsen, Yona; Kleine, T; Mezger, Klaus; Mortimer, N

Description

Trace element and initial Hf-Nd-Pb isotopic composition of a series of late Paleozoic arc rocks from South Island, New Zealand show evidence for the presence of Indian-type mantle in the Permian SW Pacific. The trace element budget points to a fluid-dominated arc setting such that Pb isotope compositions for both the volcanic and intrusive rocks were controlled by addition of fluids derived from the subducted slab to the mantle wedge. Relatively unradiogenic initial 207Pb/204Pb ratios indicate...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
URI: http://hdl.handle.net/1885/51217
Source: Earth and Planetary Science Letters
DOI: 10.1016/j.epsl.2006.11.046

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