U-Pb dating of Augen orthogneisses from the axial zone of the Montague Noire (Southern of Massif Central): new witness of Ordovician magmatism into the Variscan Belt

被引:63
|
作者
Roger, F
Respaut, JP
Brunel, M
Matte, P
Paquette, JL
机构
[1] Univ Montpellier 2, CNRS, UMR 5573, Lab Dynam Lithosphere, F-34095 Montpellier, France
[2] Univ Clermont Ferrand, CNRS, UMR 6524, Lab Magmas & Volcans, F-63038 Clermont Ferrand, France
关键词
calc-alkaline orthogneiss; Ordovician; Variscan Belt; axial zone of the Montague Noire; U-Pb dating; France;
D O I
10.1016/j.crte.2003.10.014
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
We present new U-Pb results on felsic Augen orthogneisses from the Axial Zone of the Montagne Noire (French Massif Central). The data indicate Ordovician ages, 456 +/- 3 and 450 +/- 6 Ma for two samples collected at 'Pont-de-Larn' and 'Gorges d'Heric', respectively. These ages are interpreted as the igneous emplacement age of the granitic protolith. (C) 2003 Academie des sciences. Publie par Elsevier SAS. Tous droits reserves.
引用
收藏
页码:19 / 28
页数:10
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