| 王建,思积勇,赖华亮.青海木乃地区水系沉积物地球化学特征及成矿远景分析[J].矿产勘查,2023,14(1):102-111 |
| 青海木乃地区水系沉积物地球化学特征及成矿远景分析 |
| Geochemical characteristics and metallogenic prospect of Munai area, Qinghai |
| 投稿时间：2021-12-29 |
| DOI：10.20008/j.kckc.202301012 |
| 中文关键词: 水系沉积物 地球化学特征 成矿远景区 木乃地区 青海 |
| 英文关键词: stream sediment survey geochemical features metallogenic prospect Munai area Qinghai |
| 基金项目:本文受中国地质调查局地质调查项目(1212011221034)资助。 |
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| 中文摘要: |
| 为查明青海木乃地区地球化学分布特征、主要成矿元素的丰度、富集离散及组合特征,本次研究完成了1∶50000水系沉积物地球化学测量工作。通过对Au、As、Sb等20种元素进行地球化学特征分析,圈定综合异常48处,并对部分异常进行了查证。综合研究认为区内多金属成矿作用受断裂、地层及岩体控制明显,尤其与北西向展布的断裂构造关系密切。结合地球化学异常及地质背景,圈定出3个成矿远景区:木乃雪山Cu-Pb-Zn-Ag-Au远景区,主要元素组合为Cu、Pb、Zn、Ag；鄂莫切德铅锌银铜远景区,主要元素组合为Pb、Zn、Ag、Cu；波西加碎玛钨锡铋钼远景区,主要元素组合为W、Sn、Mo、Bi。研究区主要成矿种类为:Pb、Zn、Ag、W、Sn、Bi等。研究工作指明了青海木乃地区最具成矿潜力的元素及远景区地段,为该区成矿预测及下一步地质找矿工作部署提供地球化学依据。 |
| 英文摘要: |
| In order to find out the geochemical distribution characteristics, the abundance, enrichment, dispersion and association characteristics of major ore-forming elements in the Munai area, Qinghai Province, a 1∶50000 river sediment geochemical survey was completed. The geochemical characteristics of 20 elements such as Au, As and Sb were analyzed, 48 comprehensive anomalies were delineated, and some anomalies were verified. The comprehensive study shows that the polymetallic mineralization in the area is obviously controlled by faults, strata and rock masses, especially the NW trending fault structures. In combination with geochemical anomaly and geological background, three metallogenetic prospect areas are delineated:the Cu-Pb-Zn-Ag-Au prospect area of Munai snow mountain, with the main element combination of Cu, Pb, Zn and Ag. The main element combination of the Omochede Pb, Zn, Ag and Cu prospect area is Pb, Zn, Ag and Cu; The main element combination of the broken Ma tungsten tin bismuth molybdenum prospect area in Boxijia is W, Sn, Mo and Bi. The main metallogenic types in the study area are:Pb, Zn, Ag, W, Sn, Bi, etc. The research work has pointed out the most potential elements and prospective areas in the Munai area of Qinghai Province, providing geochemical basis for the metallogenic prediction and the deployment of the next geological prospecting work in this area. |
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