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The geochemical evolution of the Izu-Bonin arc system: A perspective from tephras recovered by deep-sea drilling

Bryant, Colleen; Arculus, Richard; Eggins, Stephen

Description

Less than 30 Ma tephra glasses from the Izu-Bonin (IB) arc consist dominantly of low-K tholeiites that are highly depleted in high field strength elements (HFSE), light rare earth elements (LREE), and large ion lithophile elements (LILE). Collectively, these characteristics indicate minimal contributions from the subducted sediment, a dominantly aqueous fluid subduction component transfer mechanism, and highly depleted mantle sources. Subtle temporal variations are evident throughout the...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
URI: http://hdl.handle.net/1885/87868
Source: Geochemistry, Geophysics, Geosystems. G3
DOI: 10.1029/2002GC000427

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