Santanghu basin , located in the edge of the southern siberian plate , has the double basements of the pre - cambrian crystalline basement and the palezoic metamorphic basement of volcanic - sedimentary rocks 三塘湖盆地位于西伯利亞板塊南緣,具有前寒武紀(jì)結(jié)晶基底和古生代火山巖-碎屑巖褶皺基底組成的雙重基底。