| 李强.滇中易门狮子山铜矿床构造控矿规律[J].地质与勘探,2009,45(4):352-357 |
| 滇中易门狮子山铜矿床构造控矿规律 |
| Structural Control of Copper Mineralization at the Shizishan Deposit in Yimen , Central Yunnan |
| 投稿时间：2008-10-24 修订日期：2009-06-01 |
| DOI： |
| 中文关键词: 构造控矿规律 昆阳裂谷铜矿 狮子山铜矿床 滇中易门 |
| 英文关键词: structual control, copper mineralization, Kunyang rift, Shizishan copper deposit, Yimen, central Yunnan |
| 基金项目:国土资源部危机矿山专项(20089943;200653057),国家科技支撑项目(编号:2006BAB01B09)及昆明理工大学创新团队项目
(2008)资助。 |
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| 中文摘要: |
| [摘要]易门狮子山铜矿床是元古宙昆阳裂谷中的典型“东川式冶铜矿床,具有层构双控、构造改
造明显、多种矿体类型共存的特点。应用矿田地质力学的理论和方法,系统鉴定了主要断裂结构面力学
性质,认为矿床受一系列轴向北东向的紧闭倒转复合倾伏褶皱和北东向压扭性断裂的控制,进一步总结
了构造控矿特征;经构造筛分,厘定了构造体系,提出北东向构造带是主要控矿体系,该体系的主演化期
为晋宁期-澄江期,叠加了印支期的变形,晋宁期-澄江期的改造作用使围岩中铜质活化、转移、富集成
矿;概括出“层楼式冶、“背斜+断裂冶、“多字型冶构造控矿型式,为深部隐伏矿定位预测提供了依据。 |
| 英文摘要: |
| Abstract:The Shizishan copper deposit in Yimen is one of the typical “Dongchuan-pattern冶copper deposit formed in the Kunyang rift of Proterozoic
age. It has the characteristics of being controlled by both stratum and structure, obvious structural rework and coexistence of different types of orebodies .
The theory and method of ore field geomechanics were used to appraise the mechanical property of main structure plane systematically, It is believed that
the mineralization is jointly controlled by a series of northeast striking, closed, inverted and composite plunging folds and compresso-shear faults. The
characteristics of structural control on copper mineralization has been summarized in detail. After sieving the structure and determining the stucture sys鄄
tem, it is concluded that the northeast striking structure zones are the main ore -controlling system, whose main evolution phase was Jinning-Chenjiang
period (Proterozoic), superimposed with the deformation of Indosinian period (Triassic). The reworking of Jinning-Chenjiang period made the copper in
wall rocks being activated、transferred and enriched to form mineralizion. ; Three ore -controlling structure patterns such as “storey冶, “anticline + fault冶
and “孜冶are summed up to provide mineralization prognosis model for exploring concealed ores. |
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