Discussion on Mesozoic basin boundary of the northern Junggar Basin,Xinjiang

Aim To determine the Mesozoic northwestern boundary of Junggar Basin.Methods Through the northwestern margin of Junggar Basin Zaire Hill-Halaalate Hill both sides of the sedimentary basin sedimentary characteristics,sedimentary filling process and Paleo-current restoration studies.Results Northwestern margin of Junggar Basin since the Mesozoic,in Zaire Hill-Halaalate Hill both sides of the basin have different sedimentary characteristics,sedimentary filling process and the ancient Paleo-current patterns,and Heshituoluogai basin has an independent sedimentary system and the Paleo-current patterns.Conclusion Early Mesozoic northwestern Junggar basin is located at the border of Zaire Hill-Halaalate Hill and Heshituoluogai basin is an independent fault basin which developed in the Paleozoic fold above basal at the Triassic-Middle Jurassic.Since the Cretaceous period,Heshituoluogai basin and Junggar Basin have covered together into a unified development of depression basin,the basin boundary is located on the north side of the Heshituoluogai basin.