U-Pb geochronology on zircon and isotope geochemistry (Pb, Sr and Nd) of the basement in the Songpan-Garze fold belt (China)

被引：46

作者：

Roger, F

Calassou, S

机构：

[1] UNIV MONTPELLIER 2,URA 1763 GGP,ISTEEM,F-34095 MONTPELLIER 05,FRANCE

[2] UNIV MONTPELLIER 2,CNRS,URA 1760,MONTPELLIER,FRANCE

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES | 1997年 / 324卷 / 10期

关键词：

U-Pb geochronology; zircon; isotope geochemistry; basement; Songpan-Garze; China; Yangtse orogen;

D O I：

10.1016/S1251-8050(97)82516-5

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The basement of the Songpan-Garze fold belt has been dated at 829 +/- 9 Ma (2 sigma) using the U-Pb method on zircon fractions. This age is interpreted as the emplacement age, and together with Pb, Sr and Nd isotope data, suggests that this belt was part of the Yangtse craton (South China block). The emplacement of these calc-alkaline Upper Proterozoic granitoids may be linked to a south-dipping subduction under the South China block during the Jinniglan orogeny (1000-850 Ma).

引用

页码：819 / 826

页数：8

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