Structural Analysis Of Jinhong Area In Huize County,Yunnan Province

Based on the collecting and summarizing of geologic documents and datas in research area systematically,this paper analyses the structure in JinHong research area through many times of field investigation and indoor analysis.The main methods used in this paper is stereographic projection, statistical method,Monte Carlo method and FEM.The research achievements are as follows:1,Faults in research area can be divide into three levels by its formation period.scale and influence scope of activity, but,only the first two grades are the research emphasis,such as the faults of QiLinchang,DaChaiyuan and Fl to F7. The main faults is a series of imbricated structure dipping to the SE and extend toward NW about20degree.Most of them have the characteristic of translation motion2,There are two main folds named after the nearest village CheJiaping and FuJialiangzi in research area,and they all extend toward NE(about60°and55°). The outcrop of both folds are incomplete.because of the cuting by reverse faults.The preliminary analysis judgement by investigation is that these two folds were formed by the same tectonic stress field in late Hercynian and the force is in NW to SE.3,Useing the geology analysis method and stereographic projection divide the belongings of joint or joint and fold in research area by its causes and period of formation.In order to get more quantitative information about occurrence of joint,three methods is used, first is systematical clustering method,it is used to classify and check the group of joint.Then is fitting the Probability density function.It is very important to the Monte Carlo simulation which is the last quantitative method.4,Based on the study of spatial and movement characteristic of structure in the research area,this paper have simulated and analysed tectonic stress field in early-middle Hercynian period and late Hercynian.5,Take CheJiaping area as an example, By comparing,there are some connections between the tectonic stress field and distribution of unusually high amounts of Pb and Zn which discoverd by collecting and testing the samples systematically in CheJiaping.