Tonglin area is one ofthe areaswherethere existmany copperore deposits.The geotec- tonic property has many titles.Mostof geological scholarscall itthe lower Yangtze platform depression and divide the geotectonic stages into formation of basement,sedimentaion of coverand intreplate deformation.According to the diwa theory,this paperclassifies itas the Jiangsu- Hubei geodepressional system ofthe Central China geodepressional region.Accord- ing to the analysis of the features ofstructural layers,the geotectonic evolution of the region is divided into four stages:pre- geosyncline,geosyncline,platform and
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