| 摘要点击次数: 9 全文下载次数: 0 查看全文 查看/发表评论 下载PDF阅读器 |
| 基金项目：青海省清洁能源矿产专项资金项目“青海省都兰县合支龙滑石矿普查”（2022013011qj011） |
|
| 摘要： |
| 通过对青海都兰合支龙滑石矿成矿地质背景、矿床地质特征的分析，总结矿床成因。结果表明：该矿位于东昆仑北造山带昆北复合岩浆弧，属伯喀里克—香日德成矿亚带，地层属东昆仑—柴达木地层区万保沟—鄂拉山地层分区，大面积分布镁质碳酸盐岩地层；区内构造发育，大面积分布侵入岩，岩浆活动及变质作用较强烈，对该区热液型、热液交代型滑石矿床的形成起到了重要作用；矿体赋存于石炭系哈拉郭勒组碳酸盐岩段中，多呈层状、透镜状；矿石类型为白云石-滑石型，显微鳞片变晶结构，片状构造，成因为区域变质叠加热液交代作用。研究成果可为该矿后续勘查及周边地区找矿提供参考。 |
| 关键词：滑石矿 地质特征 矿床成因 找矿标志 合支龙 青海都兰 |
|
| Abstract: |
| Through the analysis of the metallogenic geological background and geological characteristics of the Hezhilong talc deposit in Dulan, Qinghai, the genesis of the deposit is summarized. The results indicate that the deposit is located within the North Kunlun Composite Magmatic Arc of the East Kunlun North Orogenic Belt, belonging to the Bokalike-Xiangride Metallogenic Sub-belt. Stratigraphically, it falls within the Wanbaogou-Elashan stratigraphic sub-region of the East Kunlun-Qaidam stratigraphic region, characterized by widespread magnesium carbonate strata. The area exhibits well-developed structures, extensive intrusive rocks, and relatively intense magmatic activity and metamorphism, which have played significant roles in the formation of hydrothermal and hydrothermal metasomatic talc deposits in the region. The ore bodies occur in the carbonate rock member of the Carboniferous Halaguole Formation, mostly appearing as stratiform and lenticular. The ore type is dolomite-talc, characterized by microlepido-blastic texture and schistose structure, and is genetically attributed to regional metamorphism superimposed with hydrothermal metasomatism. The research findings can provide references for subsequent exploration of this deposit and prospecting in surrounding areas. |
| Keywords:talc deposit geological characteristic deposit genesis prospecting indicator Hezhilong Dulan in Qinghai |
| 马文智，马进海，马常青.青海都兰合支龙滑石矿矿床地质特征与成因[J].地质学刊,2025,49(4):385-393 |
|
|