青海冰沟—鸭子沟一带与火山岩有关的多金属矿成矿条件及找矿前景

杨春辉; 赵长缨; 徐涛

青海冰沟—鸭子沟一带与火山岩有关的多金属矿成矿条件及找矿前景

陕西省地质矿产勘查开发局区域地质矿产研究院, 陕西咸阳 712000;中国地质大学地球科学与资源学院, 北京 100083

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- 收稿日期: 2015-03-08
- 修回日期: 2015-03-19
- 发布日期: 2015-06-04

Metallogenic Conditions and Prospecting of Volcanic-type Polymetallic Deposits in Binggou-Yazigou Area of Qinghai Province

Regional Geology and Mineral Resources Research Institute of Shaanxi Geology and Mineral Resources Exploration and Development Bureau, Xianyang 712000, Shaanxi, China;School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China

摘要

摘要: 在分析前人矿产调查和研究成果的基础上, 结合本次找矿工作, 笔者对研究区地质特征、地球化学特征、矿化蚀变特征等进行了综合分析, 在优选的重点异常区内发现了4个矿点。矿产种类为铜、银、铅、锌, 矿产类型为火山-热液型、构造蚀变岩型。已圈定的矿化蚀变带分布于北西向中-大型断裂派生的次级北西向断层内, 多金属矿体沿蚀变带平行分布, 赋矿岩石多为蚀变英安岩、构造蚀变岩。研究认为, 冰沟—鸭子沟地区分布的火山岩成矿元素含量高, 是区内的矿源层。各种类型的构造发育, 导矿和容矿空间具备。化探异常强度高、分带明显、套合好, 异常区内已发现受北西向断层控制的矿化蚀变带, 圈出多条矿体, 找矿标志明显, 成矿条件有利, 找矿前景良好。
- 火山岩 /
- 多金属矿 /
- 地质特征 /
- 找矿前景 /
- 青海冰沟—鸭子沟
Abstract: Based on previous mineral survey and researches, combined with the prospecting work conducted by the authors, this paper comprehensively analyzed the characteristics of geology, geochemistry and mineralization of the study area. Four ore occurrences in the optimized major abnormal area were found, whose mineral resource species include copper, silver, lead and zinc.The metallogenesis is volcanic hydrothermal type with structural alteration. The delineated mineralized section is located in the northwest trending secondary faults which are derived from the northwest trending medium-large scale fault. The polymetallic ore body parallel to the alteration zone, and the host rocks are altered dacite and structural-altered rock. This study indicates that the igneous rocks of Binggou-Yazigou area are the source bed of ore because of the higher ore-forming elements content inside. This area develops all kinds of tectonic structures, including the ore-transmitting and hosting structure. The characteristics of geochemical anomaly of this area are high intensity, significant zoning and good identity of concentration centers for ore-forming elements. In the anomaly area, several mineralized alteration zones controlled by the northwest trending fault were found, and many ore bodies with obvious prospecting markers were ringed. The studyarea has good metallogenic conditions and prospecting potential.
- volcanic rocks /
- polymetallic ore /
- geological characteristics /
- prospecting potential /
- Binggou-Yazigou of Qinghai

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参考文献(18)

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青海冰沟—鸭子沟一带与火山岩有关的多金属矿成矿条件及找矿前景

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Metallogenic Conditions and Prospecting of Volcanic-type Polymetallic Deposits in Binggou-Yazigou Area of Qinghai Province

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