TIMING OF SHOSHONITIC MAGMATISM AND GOLD MINERALIZATION, SHEAHAN-GRANTS AND GLENDALE, NEW-SOUTH-WALES

被引：21

作者：

PERKINS, C ^{[1
]}

MCDOUGALL, I ^{[1
]}

WALSHE, JL ^{[1
]}

机构：

[1] AUSTRALIAN NATL UNIV,DEPT GEOL,CANBERRA,ACT 2601,AUSTRALIA

来源：

AUSTRALIAN JOURNAL OF EARTH SCIENCES | 1992年 / 39卷 / 01期

关键词：

AR-40/AR-39; DATING; SHEAHAN-GRANTS AND GLENDALE GOLD DEPOSITS; ZIRCON DATING;

D O I：

10.1080/08120099208728004

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Isotopic Ar-40/Ar-39, K-Ar and U-Pb dating of magmatic minerals from shoshonitic rocks in the Sheahan-Grants/Glendale area, Lachlan Fold Belt, New South Wales, indicates a continuum of magmatic events in the area from approximately 480 to 430 Ma ago. The Ar-40/Ar-39 dating of hydrothermal sericite from the Glendale monzonite-hosted gold deposit illustrates that mineralization was essentially contemporaneous with host magmatism at about 440 Ma, and that the Sheahan-Grants skarn gold deposit may have formed at approximately the same time. The age of mineralization in these two systems is similar to that of other gold (and copper) deposits in the Lachlan Fold Belt.

引用

页码：99 / 110

页数：12

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