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Late Cretaceous-Tertiary tectonics of the southwest Pacific: Insights from U-Pb sensitive, high-resolution ion microprobe (SHRIMP) dating of eclogite facies rocks from New Caledonia

Spandler, Carl; Rubatto, Daniela; Hermann, Joerg

Description

We present new U-Pb sensitive, high-resolution ion microprobe (SHRIMP) dates for zircon from eclogite facies samples from northern New Caledonia, which have important consequences for the Late Cretaceous to Eocene tectonic evolution of the southwest Pacific region. Two high-pressure metapelites contain zoned zircon crystals. Cores of these crystals represent inherited magmatic zircon grains, which yield an age of 85 Ma in both samples. Igneous zircon domains from a metamorphosed mafic cumulate...[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
URI: http://hdl.handle.net/1885/82738
Source: Tectonics
DOI: 10.1029/2004TC001709

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