The Boghen terrane (New Caledonia, SW Pacific): a Jurassic accretionary complex. Preliminary U-Pb radiochronological data on detrital zircon

Radiochronological dating of detrital zircon extracted from the Boghen terrane metasediments allows a Jurassic age to be assigned. This terrane was formerly considered as the "pre-Permian basement" of New Caledonia. Its sedimentological features, its Late Jurassic high-pressure metamorphis...

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Bibliographic Details
Published in:Comptes Rendus Geoscience
Main Authors: Cluzel, D, Meffre, S
Format: Article in Journal/Newspaper
Language:English
Published: Elsevier 2002
Subjects:
Earth Sciences
Geology
Tectonics
Antarctic
Pacific
The Antarctic
Antarc*
Online Access:https://doi.org/10.1016/S1631-0713(02)01823-0
http://ecite.utas.edu.au/24724
Description
Summary:Radiochronological dating of detrital zircon extracted from the Boghen terrane metasediments allows a Jurassic age to be assigned. This terrane was formerly considered as the "pre-Permian basement" of New Caledonia. Its sedimentological features, its Late Jurassic high-pressure metamorphism (ca 150 Ma) and its association with the arc-related volcano-sedimentary complex of the Central Chain Terrane indicate that the Boghen terrane was an accretionary complex formed during the Jurassic period along the East-Gondwana active margin. The age spectrum of detrital zircons is consistent with a derivation from the Permian-Mesozoic Southeast-Gondwana arc system and the Antarctic continent. 2002 Acadmie des sciences / ditions scientifiques et mdicales Elsevier SAS.

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