The geologic, geochemical characteristics of the Archean metamorphic plutonic intrusive of the Helong area, Jilin province

The petrography and lithogeochemical characteristics of the Archean metamorphic plutonic intrusive of the Helong area, Jilin province are discussed in this paper. The new understanding that metamorphic plutonic intrusive is a dominant is proposed for the first time. Through the study on the geochemical characteristics, a new understanding on the Archean magmatic genesis and evolution is proposed, playing an important guiding role in studying the Archean metamorphic rocks in Jilin province.