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The Tangihua complex, New Zealand : implications for cretaceous - oligocène convergent margin processes in the Sw Pacific from comparison with the Poya terrane, new Caledonia

Abstract : New major oxide, trace element and isotopic analyses of basal tic lavas from the Tangihua Complex, Northland, New Zealand, have led to the development of a new model explaining the generation of the Tangihua Complex ophiolite and a new interpretation of the tectonic setting of New Zealand during the Cretaceous. New 40 ArP9 Ar dates from the Tangihua Complex confirm their age of formation is most likley ±100Ma and they have suffered a major episode of alteration at ±30Ma, which most likely corresponds to the age of emplacement of the Northland Allochthon.
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Submitted on : Monday, December 3, 2012 - 1:36:21 PM
Last modification on : Friday, November 6, 2020 - 3:45:17 AM
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  • HAL Id : tel-00760055, version 1

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Kirsten Nicholson. The Tangihua complex, New Zealand : implications for cretaceous - oligocène convergent margin processes in the Sw Pacific from comparison with the Poya terrane, new Caledonia. Petrography. Université Joseph-Fourier - Grenoble I, 1999. English. ⟨tel-00760055⟩

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