Meso-cenozoic Magmatic Rock Characteristic And Structure Environment In Xi Ujimqin Qi

According to the meso-cenozoic magmatic rock characteristic, specially its geochemistry characteristic in Inner Mongolian Xi Ujimqin Qi area, this article promulgated that mainly magma sources are mantle source or crust mantle mixed origin;its structure environment is in continental margin near board or in the continental margin and the board the transition region; magmatic rock characteristic explains the extrusion process in late jurassic and Extension process in the early cretaceous;as well as the magmatic rock and the magmatic activity have closely relevance with pacific plateand siberia plate's tectonic movement. Which has provided the important basis to discuss and studies Inner Mongolia suture zone,the transformation relations between paleo-asian oceanand paleo-pacific tectonic domains.