Geochemical Characteristics and Original Rock Restoration of the Dashizhai Formation Metamorphic Rocks in Shumugou area,Horqin Youyi Front Banner,Inner Mongolia
In the Greater Xing'an Mountains region of the Xingmeng orogenic belt,previous studies have focused on the genesis and geodynamic evolution mechanism of volcanic rocks,while research on metamorphic rocks in the Horqin Youyi Front Banner area of the central southern section of the Greater Xing'an Mountains is relatively weak.This article conducts geochemical analysis and chronological research on the metamorphic rocks of the Dashizhai Formation in the Shushugou area.It is believed that the geologi-cal age of the Dashizhai Formation metamorphic rocks is the Early Permian,and the lithological combination is shallow metamor-phic medium acidic volcanic clastic rocks mixed with sandstone.The metamorphic facies is low green schist facies;the original rock is mainly neutral and moderately acidic crystalline tuff,with a small amount of sedimentary mudstone and sandstone,and the original rock contains a large amount of quartz and carbonate components.
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