New data on the age of gold mineralization of the Lugokan ore cluster (Eastern Transbaikalia)

被引：3
|
作者：
Redin, Yu. O. [1 ,2 ]
Dultsev, V. F. [1 ,2 ]
Nevolko, P. A. [1 ,2 ]
Ponomarchuk, A. V. [1 ]
机构：
[1] Russian Acad Sci, Sobolev Inst Geol & Mineral, Siberian Branch, Pr Akad Koptyuga 3, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Novosibirsk, Russia
来源：
DOKLADY EARTH SCIENCES | 2016年 / 469卷 / 02期
基金：
俄罗斯基础研究基金会;
关键词：
Copper compounds - Gold deposits;
D O I：
10.1134/S1028334X16080146
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The Lugokan ore cluster is located in the southeastern part of Transbaikalia within the Aga-Borzya structural-formational zone of the Mongol-Okhotsk orogenic belt. The 40Ar/39Ar dating of K-bearing minerals of syngenetic to ore parageneses has been carried out applying stepwise heating technique: it has been demonstrated that the earliest gold-ore mineral associations are Au-pyrite-arsenopyrite (163 +/- 1.9 Ma) and Au-chalcopyrite (160 +/- 2 Ma). The later parageneses encompass the Au-polymetallic (156.3 +/- 1.8 Ma) and Au-Bi (155.9 +/- 4.5 Ma) one. By their ages and position in the general scheme of the Late Jurassic magmatism of Eastern Transbaikalia, the Lugokan's ore cluster gold-bearing mineral associations corresponds to the time of intrusion of the Shakhtama pluton (161 Ma) and the Porphyry Complex (159-155 Ma).
引用
收藏
页码：851 / 854
页数：4
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