Volcanics Geochemical Behavior Study In Songliao Basin

In the paper,described by core observation,the corresponding volcanic mineral microscopic identification,correction volcanic rocks geochemical elemental analysis,using the above information,the geochemical characteristics of the volcanic rocks of the Songliao Basin,and summed up the recognition of volcanic rocks in volcanic rocks and geochemical characteristics of the newmethods:Plate method,dynamic clustering analysis,Fisher discriminant analysis,support vector machine method,principal component analysis.Songliao Basin volcanic rocks,mainly acidic volcanic rhyolite;followed by intermediate volcanic rocks and mafic volcanic rocks,trachyte,andesite and basalt,is a sub-alkaline series calc-alkaline rocks,calciumrocks and alkaline rocks.Carved out of a total of 23 kinds of rock types,mainly developed in volcanic lava,pyroclastic rocks,and transitional three types.LILE elements of the study area,Rb,Sr,Ba,the content is significantly higher Zr/Nb is large,these geochemical elements,characterized in that the volcanic rocks of the Songliao Basin is the result of the crust-mantle mixing.In the eastern Chinese Early Cretaceous large-scale lithospheric thinning and magmatism,in the plate tectonic setting of the tension of the earth gave birth to the volcanic rocks of the Songliao Basin.Then lava,pyroclastic rocks,volcanic rocks of the type of transition element characteristics of integrated established the method of identification of elements of volcanic rocks,to distinguish volcanic rock composition categories:Plate method,dynamic clustering analysis,Fisher discriminant analysis,support vector machine method,principal component analysis,these methods,in line with the rate of wore than 95%of the Plate method,dynamic clustering analysis,Fisher discriminant analysis,support vector machine;distinguish volcaniclithological structure categories:Plate method,Fisher discriminant analysis,support vector machine.