| 李德东,王玉往,张志超,石煜,周国超,解洪晶,田野.浅析东天山康古尔韧性剪切带对成岩成矿的制约——以新疆香山杂岩体为例[J].矿产勘查,2018,9(12):2292-2302 |
| 浅析东天山康古尔韧性剪切带对成岩成矿的制约——以新疆香山杂岩体为例 |
| Analysis of constraints on the diagenesis and mineralization of the Kanggur ductile shear zone in East Tianshan:A case study on Xiangshan Complex, Xinjiang |
| 投稿时间：2018-07-15 |
| DOI： |
| 中文关键词: 康古尔剪切带 香山杂岩体 成岩与成矿作用 应力分析 东天山 |
| 英文关键词: Kanggur shear zone, Xiangshan complex, diagenesis and mineralization, stress analysis, East Tianshan |
| 基金项目:国家重点研发计划项目(编号:2017YFC0601204)资助。 |
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| 中文摘要: |
| 东天山康古尔韧性剪切带是一个近东西走向复杂而强烈的构造变形带,控制着一系列岩浆活动和岩浆有关多金属矿床的分布。香山杂岩体位于康古尔韧性剪切带的东段,明显受香山断裂和黄山断裂的联合控制。在充分收集并分析前人资料基础上,首先将韧性剪切带的应力分析结果运用到了香山杂岩体的侵位机制的解释上。其次利用计算的杂岩体岩浆粘度值推测了杂岩体不同冷却程度(香山西岩体冷却较快,其次是香山东岩体,最慢的是香山中岩体)。笔者根据岩浆矿床成矿特征(取决于矿浆熔离的速度)推测,冷却较慢的岩体容易形成熔离型矿体,而冷却较快的岩体容易脆化形成贯入式矿体,冷却速度适中的容易形成上悬式矿体,这些特征与香山杂岩体中的矿体产出形态基本吻合。香山杂岩体所在断裂明显受区域应力场以及香山断裂和黄山断裂的联合控制,并且金山岩体的侵位局部影响了香山杂岩体侵位时的形态。最后,分析了剪切作用对矿体就位的控制作用。 |
| 英文摘要: |
| The EastTianshan Kanggur ductile shear zone is a complicated and strong tectonic deformation zone, which controlled a series of magmatic activities and the distribution of metal deposits. The Xiangshan complex is located in the eastern section of the Kanggur ductile shear zone, which was obviously controlled by the combination of Xiangshan fault and Huangshan fault. The emplacement mechanism of the Xiangshan complex is analyzed based on the mechanical analysis of the ductile shear zone on the basis of collecting and analyzing the previous data. Based on the calculated viscosity value of the complex, the different cooling rate was inferred, that is, the Xiangshanxi intrusion cooled faster, the Xiangshandong was the second, and the slowest was the Xiangshanzhong. According to the metallogenic characteristics of magmatic deposits, the lowest-cooling intrusion is easy to form the segregated orebody, while the quick cooling one is easy to form the penetrating ore-veins, and the moderate cooling one is easy to form the suspended orebody. These characteristics are basically consistent with the present orebody form in the Xiangshan complex. The fault of the Xiangshan complex sited is obviously controlled by the regional stress field and the combined control of the Xiangshan fault and Huangshan fault, and the emplacement of the Jinshan pluton imposed a local influence on the form of the intrusive pattern of the Xiangshan complex. Finally, the effect of shear structure on the position of ore-body is analyzed. |
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