青海省沱沱河地区多才玛铅锌矿床成矿规律及找矿标志

Metallogenic regularities and prospecting criteria of Duocaima Pb-Zn Deposit in Tuotuohe Region,Qinghai Province

沱沱河地区地处三江源成矿带的西北端,涵盖面积广大,以铅、锌、银、镉为主的地球化学异常带面积达到六万km2,出露的地层以二叠、三叠灰岩及火山碎屑岩为主,以多才玛铅锌矿床地质特征研究为基础,总结成矿规律和找矿标志,对区内其它有相似成矿地质背景矿段的地质找矿起到一定的借鉴作用。

Located in the northwest end of the Sanjiangyuan Metallogenic Belt, Qinghai Province, the Tuotuohe Region is characterized by a large Pb-Zn-Ag-Cd geochemical abnormally up to 60 thousand square kilometers. The main outcropped strata in the region include the Permian limestone and the Triassic limestone with pyroclastics. The obtained results based on the studies of the geological features, metallogenic regularities and mineral exploration criteria of Duocaima Pb-Zn Deposit could be the prospecting guideline in other area with the similar geological setting within the Tuotuohe region.