新疆准噶尔盆地西北缘中生代盆地边界探讨  

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

作　　者：李玮[1] 胡健民[2] 瞿洪杰[2] 

机构地区：[1]西北大学大陆动力学国家重点实验室/地质学系,陕西西安710069 [2]中国地质科学院地质力学研究所,北京100083

出　　处：《西北大学学报（自然科学版）》2009年第5期821-830,共10页Journal of Northwest University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(40802051);中石化重大基金资助项目(G0800-07-ZS-153)

摘　　要：目的确定准噶尔盆地中生代西北缘盆地边界。方法对准噶尔盆地西北缘扎伊尔山—哈拉阿拉特山两侧沉积盆地的沉积特征、沉积充填过程及古水流恢复等方面进行研究。结果早中生代,准噶尔盆地西北缘以扎伊尔山—哈拉阿拉特山为界,其北侧的和什托洛盖盆地在三叠纪—中侏罗世是独立于准噶尔盆地而发育在古生代褶皱基地之上的断陷盆地。白垩纪以来,和什托洛盖盆地与准噶尔盆地连为一体,成为一个统一发育的拗陷盆地,盆地边界位于和什托洛盖盆地北侧谢米斯台山一带。结论准噶尔盆地西北缘中生代以来,在扎伊尔山—哈拉阿拉特山两侧盆地具有不同的沉积特征、沉积充填过程和古水流样式,和什托洛盖盆地具有独立的沉积体系和古水流样式。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.

关 键 词：准噶尔盆地西北缘 和什托洛盖盆地 克拉玛依凹陷 古水流 

分 类 号：P56[天文地球—构造地质学]