| 李伍铜矿床控矿构造地质特征及演化模式探讨 |
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| 引用本文： | 杜亚军,田竞亚.李伍铜矿床控矿构造地质特征及演化模式探讨[J].四川地质学报,1996(3). |
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| 作者姓名： | 杜亚军 田竞亚 |
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| 作者单位： | 四川省地矿局４０４地质队 |
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| 摘 要： | 四川李伍铜矿床是我国西南地区一个中型富铜矿床，其矿床历经了多期次的构造演化和叠加。江浪穹隆体的变形变质对早期的矿源层具改造、矿液初步富集作用；构造岩性层控制了李伍铜矿床的产出与分布，Ｓ３期沿Ｓ２面理发育起来的大型平卧褶皱控制了矿体的空间形态，成穹阶段形成的滑脱剪切带是矿液运移的通道，也是找矿的有利场所，该带中次级逆冲断面及ＥＷ向挤压时期形成的Ｓ３面理挠曲是容矿空间，变形与成穹作用双重机制对该矿床构造的形成至关重要。
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| 关 键 词： | 构造岩性层，滑脱剪切带，平卧褶皱 |
STRUCTURAL CONTROL AND EVOLUTIONARY MODEL FOR LIWU COPPER DEPOSIT |
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| Du Yajun and Tian Jingya.STRUCTURAL CONTROL AND EVOLUTIONARY MODEL FOR LIWU COPPER DEPOSIT[J].Acta Geologica Sichuan,1996(3). |
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| Authors: | Du Yajun and Tian Jingya |
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| Abstract: | Liwu copper deposit, Sichuan, a medium-scale pay copper deposit is characterized by multiphase tectonic evolution. Deformation and metamorphism of Jianglang domal body was responsible for reformation of the source bed and for primary enrichment in ore material. Tectonic-lithologic layer gets the orebodies under the control. Shape of the orebodies is controlled by large recumbent folds which are developed along foliation S2 in the period S3.Decollement shear zone in doming stage acted as pathway of ore fluid and precipitating site of ore material. Thrust fault in the shear zone and foliation S3 formed by EW compression acts as host structure. Deformation and doming are of importance to the formation of ore-control structure. |
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| Keywords: | tectonic-lithologic layer decollement shear zone recumbent fold |
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