Structural control and K/Ar dating of the Au-Ag epithermal veins in the Shila Cordillera, southern Peru

被引：11

作者：

Cassard, D

Chauvet, A

Bailly, L

Llosa, F

Rosas, J

Marcoux, E

Lerouge, C

机构：

[1] Bur Rech Geol & Minieres, DR LGM, F-45060 Orleans 2, France

[2] Univ Orleans, CNRS, UMR 6530, F-45067 Orleans, France

[3] Cedimin SA, Jesus Maria Lima 21, Peru

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES | 2000年 / 330卷 / 01期

关键词：

Peru; Shila Cordillera; epithermal gold; vein; structural control; K/Ar ages;

D O I：

10.1016/S1251-8050(00)00118-X

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The Au-Ag epithermal mineralization of the Shila Cordillera is dated at about 10.7 Ma (K/Ar on adularia). The vein system is characterized by the association of a major approximate to east-west vein and N120-135 degrees E secondary fractures. The strike-slip faults controlling the veins indicate an initial NE-SW to ENE-WSW shortening direction, which is compatible with that generally accepted for this period. These structures were reopened during a second phase and channelized mineralizing fluids, the circulation of which may have began at the end of stage 1. (C) 2000 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.

引用

页码：23 / 30

页数：8