论文摘要
The mining area is located in Dongwuqi area on the west slope of the middle-south section of the Daxing’anling metallogenic belt. The area is mostly covered by grasslands, and it is difficult to identify geological outcrop. Previously（Cheng, 2012）, the Tianjin Geological Survey Center of China Geological Survey discovered the ChangtuXili Ag-Pb-Zn polymetallic deposit in the study area through 1:50,000 mineral geological survey. On the basis of previous studies, this work delineates four IP anomalies by carrying out 1:10,000 IP elevator and sounding work, and discovers multi-layered ore bodies through drilling, which proves the effectiveness of IP method in prospecting in the area. In addition, IP4 is the largest IP anomaly found this time, and it can be used as a key target for prospecting in the next step. The ChangtuXili Ag-Pb-Zn deposit in Inner Mongolia is located in the Yanshan period polymetallic metallogenic belt in the middle-south section of the Daxing’an Mountains. The Tianjin Geological Survey Center found the deposit by screening 1:50,000 soil measurements. However, due to the serious surface coverage, the prospecting work can not be further understood. Based on the electrical characteristics of rocks and ores in the area, the induced polarization method is used to directly identify the possible occurrence location of ore bodies within the geochemical anomaly range, and good results have been achieved through drilling verification. This provides a practical reference for searching for similar polymetallic deposits in the region. The main strata exposed in this area are andesite and andesite volcanic breccia of the Manitou Formation of the Upper Jurassic, rhyolite and rhyolitic lava tuff of the Cretaceous Gaolao Formation of the Lower Cretaceous, mudstone and conglomerate-bearing sandstone of the Upper Pliocene Baogda Wula Formation, Quaternary Holocene Lake Alluvial-diluvial beds（Jin et al., 2017）. The strata are generally NE-trending, and the ore bodies are mainly developed in the Cretaceous Cretaceous Gaolao In the broken rock of the group. The volcanic structure is well developed in the area. The NW-trending faults are the main ore-controlling structures. The intersection of NNW-E-trending faults is the favorable position for mineralization. Ore bodies are often rich in manganese and silver in the upper part and lead and zinc in the lower part. Ore minerals are mainly rhodochrosite, pyrolusite, galena, sphalerite and independent silver minerals. At present, it is preliminarily considered that the deposit is a continental volcanic manganese-silver-lead-zinc deposit controlled by volcanic structure, and the metallogenic period is divided into early, middle and late stages. Physical data in the area show that the ore and mineralized rocks are characterized by high polarizability, the average polarizability is more than 5%, and the polarizability of other rocks is less than 2%. Based on this physical premise, the working range of IP is
论文目录
文章来源
类型: 国际会议
作者: MA Yixing,HE Peng,LIU Zhujian
来源: 第九届世界华人地质科学研讨会 2019-06-01
年度: 2019
分类: 基础科学,工程科技Ⅰ辑
专业: 地质学,矿业工程
单位: Development and Research Center of China Geological SurveyTianjin Center of China Geological SurveyChina Aero Geophysical Survey and Remote Sensing Center for Natural and Resources
分类号: P618.2
DOI: 10.26914/c.cnkihy.2019.028535
页码: 450-451
总页数: 2
文件大小: 133k
下载量: 2