| 沂沭断裂带中段地质特征与金矿成矿作用 |
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| 引用本文： | 李洪奎,杨永波,李英平,田京祥.沂沭断裂带中段地质特征与金矿成矿作用[J].地质调查与研究,2004,27(4):255-260. |
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| 作者姓名： | 李洪奎 杨永波 李英平 田京祥 |
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| 作者单位： | 1. 山东省地质调查院,济南,250013
2. 山东省第四地质矿产勘查院,潍坊,261021 |
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| 基金项目： | 中国地质调查局大调查项目 (2 0 0 110 2 0 0 0 5 1) |
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| 摘 要： | 沂沭断裂带是一条岩石圈断裂，有着悠久的演化历史，在中生代受库拉板块和太平洋板块运动作用，发展成为裂谷式断裂系统。通过对沂沭断裂带中段地质特征的研究，初步总结了沂水-汤头断裂是在晋宁期形成的北东向中浅层次韧性剪切带的基础上，经后期脆性构造叠加、改造而形成的一条复杂的韧-脆性构造带，它对区内金矿的形成起控制作用，并具有控、容矿构造之特征。在该带内已发现六个金矿体，赋矿围岩为蚀变的绿片岩、糜棱岩化碎裂岩和花岗质碎裂岩。
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| 关 键 词： | 沂沭断裂带 沂水-汤头断裂 金矿 成矿作用 |
| 文章编号： | 1007-6956(2004)04-0255-06 |
| 修稿时间： | 2004年4月2日 |
Geological Characteristics and Gold Formation in the Mid-part of the Yi-Shu Fault |
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| LI Hong-kui,YANG Yong-bo,LI Ying-ping,TIAN Jing-xiang.Geological Characteristics and Gold Formation in the Mid-part of the Yi-Shu Fault[J].Geological Survey and Research,2004,27(4):255-260. |
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| Authors: | LI Hong-kui YANG Yong-bo LI Ying-ping TIAN Jing-xiang |
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| Institution: | LI Hong-kui~1,YANG Yong-bo~2,LI Ying-ping~1,TIAN Jing-xiang~1 |
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| Abstract: | Yi-Shu fault is a lithosphere fracture belt with a long history, which formed a rift fracture system by the effect of the Kula plate and the Pacific plate movement during Mesozoic. According to the study on the middle part of this fault, it is suggested that this part (from Yi-Shu to Tangtou) is a middle-deep ductile shear zone with NE direction, and firstly formed during Jinning period (Newproterozoic). And later it was overprinted and reformed by the brittle structure and formed a complex ductile-brittle structural belt at last. It controls the gold ore formation, and is the host structure of the gold ore. 4 ore bodies have been found in the belt. Their host rocks are alteration green schist, mylonitization cataclastic rock and granitic cataclastic rock. |
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| Keywords: | Yi-Shu rift gold ore Yishui-Tangtou fault ore formation |
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