江西大背坞金矿区构造对金矿化的控制
ORE-BEARING STRUCTURES OF THE DABEIWU OREFIELD,JIANGXI PROVINCE AND THEIR CONTROL OF GOLD DEPOSIT
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摘要: 大背坞金矿区以NEE-NE向挤压破碎带为主要含矿构造,与NE向主干断裂组成"入"字型构造。它是在区域韧性剪切变形带基础上成生发展起来的,两者重接或斜接复合。NEE-NE向挤压破碎带的成生、演化及形变、相变差异制约着金矿的成矿阶段、矿化富集、矿体定位乃至矿体的赋存状态。Abstract: In the Dabeiwu gold field occurs aλ-type structure composed of the NE-trending major shear fault and the NEE-trending splay compressive fracture zones,which developed in the regional ductile-shear zone,constituting the main ore-bearing structures.The growth and evolution and the difference in deformation and facies of the NEE-trending fracture zones controlled the localization of gold enrichment,the mineralization stages,as well as the state in which the gold exists.
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Key words:
- ore-bearing structure /
- deformation and facies change
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