多龙矿集区物探异常特征及找矿方向

发布时间：2019-06-21 00:22

【摘要】：多龙矿集区位于青藏高原藏北腹地,地处班公湖—怒江缝合带北缘、南羌塘盆地;由于大地构造位置的特殊性和良好的地质背景,历来备受中外地质学家的关注,取得了一系列找矿成果,但其找矿方法技术及有效的物探方法组合亟待研究总结.本文首先,对物性特征进行了系统的整理与总结,得出"两中高夹一低"的物性特征,构建了物探找矿模型;其次,提出多龙矿集区的物探找矿方法技术组合:磁法→激电剖面→大地电磁测深.最后,运用延拓、垂向导数、线性增强和总梯度模等新方法、新技术对磁测数据进行再处理,并结合最新地质资料进行深入分析解释,提取有用的找矿信息,提出新的推断成果.通过地质、物化探综合研究,圈出有利找矿远景区,为多龙矿集区寻找铜、金矿床提供物化探方面方法技术的指导.
[Abstract]:Dolong Mine concentration area is located in the northern Tibetan hinterland of Qinghai-Xizang Plateau, located in the northern margin of Bangong Lake-Nujiang fracture belt, South Qiangtang Basin. Because of the particularity of geotectonic position and good geological background, it has always attracted the attention of geologists at home and abroad, and a series of prospecting results have been obtained, but the combination of prospecting methods and effective geophysical methods needs to be studied and summarized urgently. In this paper, the physical properties are systematically sorted out and summarized, and the physical characteristics of "two high clip and one low" are obtained, and the geophysical prospecting model is constructed. secondly, the technical combination of geophysical prospecting methods and techniques in Dolong ore concentration area is put forward: magnetoelectric section magnetotelluric sounding. Finally, new methods such as extension, vertical derivative, linear enhancement and total gradient mode are used to reprocess the magnetic survey data, and combined with the latest geological data, the useful prospecting information is extracted and the new inference results are put forward. Through the comprehensive study of geology and geophysical exploration, the favorable prospecting prospect is circled, which provides the guidance of geophysical and geophysical methods and techniques for the exploration of copper and gold deposits in Dolong ore concentration area.
【作者单位】：中国地质调查局成都地质调查中心;
【基金】：国家自然科学基金项目(41202049) 国家重点基础研究发展计划(973)“青藏高原南部大陆聚合与成矿作用”(2011CB403100) 中国地质调查局地质矿产调查评价专项(1212011086074;12120114050401)联合资助
【分类号】：P631

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