Implications of retrograde metamorphism for gold mineralisation in the greenstone belts of northern Dharwar craton, Karnataka, India

被引：8
|
作者：
Ugarkar, AG [1 ]
机构：
[1] Karnatak Univ, Dept Geol, Dharwad 580003, Karnataka, India
来源：
GONDWANA RESEARCH | 1998年 / 1卷 / 02期
关键词：
northern Karnataka; greenstone belts; gold; metamorphism;
D O I：
10.1016/S1342-937X(05)70832-7
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Gold mineralisation in the Archaean Hutti, Mangalur and Gadag greenstone belts of the northern Dharwar craton is characterised by hydrothermal wall-rock alterations with ubiquitous presence of chlorite, sericite/muscovite, biotite, carbonates, sulphides and quartz veins indicating greenschist facies mineral assemblages. Such wall-rock alterations associated with gold mineralisation in these belts post-date the peak of regional metamorphism and are retrograde with respect to regional metamorphism. There is a salient relationship between gold mineralisation and retrograde greenschist facies metamorphism in these belts.
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页码：215 / 219
页数：5
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