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本文涉及的范围是东经108°00′～123°00′,北纬40°40′～46°00′中国境内海西晚期的花岗岩。根据这一地区岩体的岩石化学特征、分布规律以及它们与大地构造格局之间的关系,可将本区海西晚期花岗岩体的分布,大体上划分为北、中、南三个带。北带与中带之间的分界线位于索伦山—二连浩特南部—贺根山一线;中带与南带之间的分界线位于索伦山南—西拉
This paper deals with the late Hercynian granites in China from 108 ° 00 ’~ 123 ° 00’ east longitude and 40 ° 40 ’~ 46 ° 00 ° north latitude. According to the petrochemical characteristics and distribution of rock mass in this area and the relationship between them and tectonic setting, the distribution of late Hercynian granite can be divided into three zones: north, middle and south. The dividing line between North Belt and Middle Belt is located in the Soren Hill - south of Erenhot - Hegen Hill; the dividing line between the Middle Belt and the South Belt is located in the south of Soleil - Silas