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甘肃省拉美扎沙地区找矿模型及找矿效果
- 刘景显|韦乐乐|火兴达|李康宁|张建鹏|严康
- 作者单位：
- 甘肃省地质矿产勘查开发局第三地质矿产勘查院|陕西国际商贸学院珠宝学院,陕西省宝石教学示范中心|甘肃省地质矿产勘查开发局第三地质矿产勘查院|甘肃省地质矿产勘查开发局第三地质矿产勘查院|甘肃省地质矿产勘查开发局第三地质矿产勘查院|甘肃省地质矿产勘查开发局第三地质矿产勘查院
基金项目：
- 国家重点研发计划项目（2017YFC0601506）；中国地质调查局项目（121201004000160901）；甘肃省财政厅项目（甘资财〔2019〕27号）
详细信息：
- 作者简介：
- 刘景显（1986—），男，山东聊城人，工程师，从事矿产远景调查工作；兰州市七里河区兰工坪路121号，甘肃省地质矿产勘查开发局第三地质矿产勘查院，730050；E-mail:357194878@qq.com
- 通讯作者：
- isnull
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Prospecting model and prospecting effect of Lameizhasha area,Gansu Province
- English Author：
- Third Institute Geological and Mineral Exploration,Gansu Provincial Bureau of Geology and Mineral Resources|Shaanxi Institute of International Trade Jewelry Institute,Shaanxi Province Gemological Teaching Demonstration Center|Third Institute Geological and Mineral Exploration,Gansu Provincial Bureau of Geology and Mineral Resources|Third Institute Geological and Mineral Exploration,Gansu Provincial Bureau of Geology and Mineral Resources|Third Institute Geological and Mineral Exploration,Gansu Provincial Bureau of Geology and Mineral Resources|Third Institute Geological and Mineral Exploration,Gansu Provincial Bureau of Geology and Mineral Resources
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
甘肃省拉美扎沙地区位于夏河—合作断裂以北的中秦岭金铜铅锌多金属成矿带，地质构造复杂，成矿条件优越。通过开展1∶5万水系沉积物测量、1∶1万土壤测量、1∶1万地质草测，并对土壤综合异常进行初步踏勘，发现了矿（化）体。矿（化）体明显受美武岩体与围岩接触带、断裂控制，与电气石化、硅化、孔雀石化、黄铁矿化、赤褐铁矿化等围岩蚀变关系密切；Au、Cu、Ag、As、Sb等元素异常曲线峰值能指示矿（化）体的存在；矿（化）体磁化率一般小于10×10-5 SI（κ），显示为弱—无磁性特征。在成矿有利地段布置了地质、物化探综合剖面，结合找矿标志，建立了研究区找矿模型，经查证，圈定2条铅铜矿（化）体和1条金铜矿（化）体。
关键词:
找矿模型；找矿效果；矿（化）体；综合剖面；拉美扎沙地区
Abstract:
Lameizhasha area of Gansu Province is located in the middle Qinling gold-copper-lead-zinc polymetallic ore belt north Xiahe-Hezuo fault and with complex geological structure and favorable ore-forming conditions.Based on 1:50 000 stream sediment survey,1∶10 000 soil survey,1∶10 000 geological sketch survey and preliminary survey of soil comprehensive anomaly,ore(mineralized) bodies are found.The ore(mineralized) bodies are evidently controlled by Meiwu rock mass and wall rock contact zone,fault,and closely related to tourmalinization,silicification,malachitization,pyritization,hermitization and limonization; Au,Cu,Ag,As,Sb element anomaly curve peak can indicate the existence of ore(mineralized) body; the magnetic susceptibility of ore(mineralized) body is generally below 10×10-5 SI（κ）,displaying weak-zero magnetic characteristics.Geological,geophysical and geochemical profiling is set on favorable oreforming spots,and based on prospecting indicators,prospecting model of the study area is established,which is verified by the delineation of 2 lead-copper ore(mineralized) bodies and 1 gold-copper ore(mineralized) body.
Keywords:
prospecting model;prospecting effect;ore(mineralized) body;comprehensive profiling;Lameizhasha area
