| From 2006 to 2007,the regional geological survey of Heilongjiang Province conducted a 1: 50000 regional geology and mineral survey in the region.A gold geochemical block was discovered in this area through a low-density chemical prospecting surface.A total of 35 Au anomalies were circled.In order to further narrow the prospecting target zone,alteration zones and ore bodies were delineated,(Chemical)body shape,appearance,size and extension of the law of change,explore the amount of resources,in the area and the surrounding area were divided into two total metallogenic prospect: 1 pine-Quanlin Gold polymetallic,graphite grade ? into Mine prospect area;2 Jinlin Forest gold-grade prospecting area.Based on "Yichun Xinqing gold polymetallic ore census" project,determine the essay topics.The tectonic positions of the study area lie in the Siberian plate(Grade ?),the Tianshan-Xing'an activity zone(Grade ?),the Songnen-Jiamusi-Xingkai block(Grade ?),the Jiamusi-Xingkai block(Grade ?)Paleoproterozoic rift trough(Grade ?)"Metallogenic series and its evolution of important metal and nonmetallic minerals in Heilongjiang Province".According to the division plan of regional geologists in Heilongjiang Province,the tectonic zoning of the study area is located in the Xinganling-Inner Mongolia Trough Fold Zone(Grade I),the Yichun-Yanshou Trough Fold System(Grade I),the Five Star-Guan Songzhen Middle uplift zone(Grade ?),Tangwanghe-Guan Song Zhen uplift(?).The strata in this area are not well developed and have limited exposure.They mainly include the Dongfengshan Group in the Paleoproterozoic,the Wudaoling Formation in the Permian,the Cretaceous Panzhi Fangfang Formation,the Ningyuancun Formation and the Taoqihe Formation,The Cretaceous upper Taiping forestry group and the Cenozoic.The intrusive rocks in the study area are developed,and the types of rocks are complex.All of them are exposed from basicity to acidity,and are dominated by granitoids with medium-deep faulting.The intrusive rocks in the study area are widely distributed and relatively complicated in lithology.They are a set of gneiss or mixed granitic granites with no obvious regularity or boundary.The main types of rocks in the study area are banded marble(mb),gnt,gph,qs and sch in schist.In this paper,the exploration and research methods to geophysical and geochemical exploration as the main means of synthesis of existing geological data to conduct a comprehensive study of the study area.The combination geomagnetic anomaly and gold anomaly were determined by using geochemical exploration circle,and the magnetic characteristics of the main geological bodies in the area were analyzed by high accuracy magnetic surveying on the ground.The excitement bodies were delineated by using the method of sweeping the middle of the staircase by means of the excitement,and the relationship between the resistivity and the polarizability anomaly in the study area and the orebodies was ascertained.Deployed in the main section of the seismic sounding profiles,trenching and drilling guidance.The gold anomaly was validated by trenching and drilling,and the Xinqing small gold deposit was evaluated.This dissertation mainly takes the Xinqingyan gold mining area as the research object,and conducts a simple research on the geological structure,geophysical parameters and metallogenic regularity in the mining area,provides a theory for further expanding the existing orebody size and the sustainable development of the mining area Based on,and carried out the following research work.Summarize the predecessor's basic geological data,geological map,project report,analysis and test data analysis and research results to determine the study area of metallogenic mechanism.Geophysical parameters measured to establish the study area geophysical work and the relationship between geological work to establish a comprehensive prospecting model.Through this research work,the relationship between geophysical anomaly geochemical anomalies and ore bodies is determined,and the prospects of prospecting in the study area are determined.The results of the exploration show that the effect of the ore-prospecting method is remarkable.Based on this,the causes of the gold deposits in the region and the important ore prospecting signs are analyzed to establish prospecting models in this area.Soil geochemical measurements of Au,As and Sb anomalies are geochemical markers of prospecting.Geophysical markers: The physical properties of the gold orebody in the study area are: Magnetic is weakly magnetic.The electrical characteristics of the obvious excitement of the electrical shock occurs,with a higher rate of polarization,the resistance is lowresistance characteristics.It has a certain reference value for the exploration of polymetallic deposits in the similar geological mineralization areas. |
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