The orogenic system to north is represented by the Hercynian Tianshan-Hinggan orogen that connects the Caledonian Altay Ergun orogen with sandwich of the Junggar and lli massifs in bet ween.
The pluton is marked by rock assemblage and geochemistry of postorogenic granite, and is the postorogenic pluton after collision between Erguna plot and Xing"an plot."
But under the control of NE-SW tensile stress field of Early Cretaceous, in the eastern part of "Ergun Block" sag belt was formed and the basement tectonics is NE-NNE direction.