甘肃省肃北县双沟山等两幅1∶5万矿产远景调查新进展  

Progress in two 1∶50000 prospective surveys in Shuanggoushan and one other area,Subei County,Gansu Province

作　　者：王富贵 Wang Fugui(Third Institute Geological and Mineral Exploration of Gansu Provincial Bureau of Geology and Mineral Resources)

机构地区：[1]甘肃省地质矿产勘查开发局第三地质矿产勘查院

出　　处：《黄金》2024年第1期82-86,共5页Gold

基　　金：甘肃省基础地质调查项目(甘财经二[2018]132号,甘财经二[2019]39号,甘财资环[2020]28号,甘财资环[2021]77号)。

摘　　要：为大致查明北山、双沟山一带成矿地质条件和矿产资源特征,开展了甘肃省肃北县双沟山等两幅1∶5万矿产远景调查工作。通过4年工作,对研究区内的地层进行了详细厘定和重新划分,建立了岩浆演化序列及构造格架;首次在马鞍山北幅中酸性岩体中发现了超基性岩,确定四顶黑山—双沟山断裂以北的二长花岗岩形成时代为早泥盆世,确定干河梁斜长黑云石英片岩形成时代为新太古代—古元古代;新发现矿床2处、矿点7处、矿化点8处。其中,双沟山铜镍矿是东天山铜镍成矿带东延区域甘肃省北山北带铜镍找矿取得的新突破;通过综合研究,研究区划分出6个成矿远景区,圈定出10个找矿靶区,为今后找矿工作指出了方向。In order to roughly understand the geological conditions and mineral resource characteristics of the Beishan and Shuanggoushan areas,two 1∶50000 mineral prospective surveys were carried out in Subei County,Gansu Province.After 4 years of work,the stratigraphy in the study area was detailed and redivided,and the magmatic evolu tion sequence and tectonic framework were established.For the first time,ultrabasic rocks were discovered in the acidic rocks of the northern Ma anshan,and the formation age of the diorite porphyry north of the Sidingheishan-Shuang goushan fault was determined to be Early Devonian,and the formation age of the plagioclase biotite quartz schist south of the Ganheliang was determined to be Neoproterozoic-Paleoproterozoic;2 new mineral deposits,7 mineral points,and 8 mineralized points were discovered,among which the Shuanggoushan copper-nickel deposit is a new break through in the northern zone of the Eastern Tianshan copper-nickel mineralization zone in Gansu Province.Through comprehensive research,6 prospective areas and 10 prospecting targets were delineated in the study area,which pro vides direction for future prospecting work.

关 键 词：北山 双沟山 铜镍矿 找矿新发现 基础地质调查 甘肃省 

分 类 号：TD15[矿业工程—矿山地质测量] P618.4[天文地球—矿床学]