Tectonomagmatic Evolution And Metallogenic Response Of The Qi’eshan Group In The East Tianshan Mountains

Tectonomagmatic evolution and mechanism of the Qi’eshan Group in the East TianshanMountains has long been controversial, and it restricts our comprehension of tectonics-magma-mineralization process. First of all, according to characteristics of the regionalgeophysical, geochemical field, remote sensing interpretation results and observation of wildfield, and by comprehensive utilization of microstructural and the characteristics of volcanicrocks, I analyzed the remote sensing interpretation results of boundary faults, which we foundthe fracture of Dacaotan could be used as the basis for the division of tectonic units, but itdidn’t have the significance of the plate boundary faults divided. Yet, the Fault of theKangguertage had the properties of border demarcation and could be plate suture zone. Iselected the typical profile to collect volcanic samples of Qi’eshan Group systematically, anddid Geochemical studies and the Nd-Sr isotope tracer studies. Researches found that volcanicof Qi’eshan Group is the alkaline series, and the age of diagenetic is the early Carboniferous,which is the product of kanggur subduction of oceanic island arc environment. And themagma of volcanic comes from soft melt and fluid flow enclosure curtain/melt replacement oflithospheric mantle wedge. The type of rock and its difference is caused by different primitivemagma and evolution.Based on the above study and according to the typical deposits in the area of space andtime evolution, and I used the theory of "small intrusions into mine" guiding ideology anddiscussed the magma evolution and metallogenic response of scientific problems, andsummarizes the process of magma and mineralization model.