Characteristics Of Geochemical Anomalies And Prospecting Potential In Ye Cun Yao Jia Area,Hangzhou

Theresearch area of Yecun-Yaojia is located in the south margin of the Yangtze platform,whichis located in the eastern part of the qinhang metallogenic belt.The area has experienced the four periods tectonic movement,the jinning period,the caledonian period,the indo-china period,the yanshan period and the Himalayan period.Due to the different stress and direction in different periods,the complex tectonic pattern in the region is formed,and the main body is constructed from the north east of the indo-china period.Deep fractures control the distribution of magma intrusion and endogenous deposit,ore point and all kinds of anomalies in the region.Many endogenous deposits,ore spots,geochemical anomalies and heavy sand anomalies lie in the vicinity of the two north east fault zones in the lower zhuang-shi zhu and ma jin-wuzhen.Stratum in the research area belongs to the Stratum of south China regions,yangzi strata area,jiangnan stratigraphic division,the research area main dew proterozoic jixian system-sinian system,upper Paleozoic Cambrian-silurian strata,accounting for 75.7% of the total area of the bedrock.The research area along the malkin-wuzhen at week's tip,stone mountain-over,big dock,small mountain-ginger home-the eagle point,cross road pond-river sakaguchi-red pit dock,wu Yin peak area distribution of Mesozoic volcanic sedimentary rock series,a small amount of 9.5% of bedrock area;The magmatic rocks in the research area are relatively developed,accounting for 24.31% of the bedrock area,and its characteristics are multi-phase and multi-stage.Among them,the intrusive rock in yanshan period is large,and is closely related to mineralization of important minerals such as copper,gold,lead,zinc and multi-metals in the region.This work collects and typical ore fields(bed),remote sensing data and results of exploration geochemistry,on the basis of combination of field geological investigation,stream sediment survey data processing,analysis of the chemical elements in the research area in the stream sediment concentration distribution,discusses the distribution features of the elements in different geological background and element,element time space distribution characteristics,and using factor analysis and clustering analysis combination element characteristic;On the basis of single element anomaly,the mineralization potential evaluation of the important abnormal area is carried out based on the combination of elements of the research object.It is considered that the geochemical anomaly can directly reflect the degree of mineralization of shallow table and the type of ore,which is a direct sign,and summarizes the types of the main geochemical exploration signs in the five regions.