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Rapid Cenozoic ingrowth of isotopic signatures simulating “HIMU” in ancient lithospheric mantle: Distinguishing source from process

McCoy-West, Alex J.; Bennett, Vickie C.; Amelin, Yuri

Description

Chemical and isotopic heterogeneities in the lithospheric mantle are increasingly being recognised on all scales of examination, although the mechanisms responsible for generating this variability are still poorly understood. To investigate the relative behaviour of different isotopic systems in off-cratonic mantle, and specifically the origin of the regional southwest Pacific "HIMU" (high time integrated ²³⁸U/²⁰⁴Pb) Pb isotopic signature, we present the first U-Th-Pb, Rb-Sr, Sm-Nd and Re-Os...[Show more]

CollectionsANU Research Publications
Date published: 2016-05-13
Type: Journal article
URI: http://hdl.handle.net/1885/111449
Source: Geochimica et Cosmochimica Acta
DOI: 10.1016/j.gca.2016.05.013

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