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Thermal history of UHT metamorphism in the Napier Complex, East Antarctica: insights from zircon, monazite and garnet ages

Suzuki, Satoko; Arima, Makato; Williams, Ian; Shiraishi, Kazuyuki; Kagami, Hiroo

Description

High-grade gneisses from Mt. Riiser-Larsen, East Antarctica, have been dated by whole-rock-mineral Sm-Nd and SHRIMP zircon and monazite U-Pb to help define the thermal history of ultrahigh temperature (UHT) metamorphism in the Napier Complex. Both the monazite and youngest zircon yield a range of apparent ages (∼2.51-2.47 Ga), consistent with crystallization during an extended period of metamorphism. Some zircon also preserves an isotopic record of earlier events, placing an upper limit of a...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
URI: http://hdl.handle.net/1885/25884
Source: Journal of Geology
DOI: 10.1086/498100

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