气候、构造演化在大龙沟仓房沟群沉积环境演化过程中的响应

Response of the evolution of sedimentary environment to climate and tectonic evolution in Dalonggou area, Junggar basin, Xinjiang Province.

对新疆准噶尔盆地东南部博格达山前渊大龙沟地区的二叠 -三叠系 (P- T)仓房沟群作了详细的岩石学、古流向、古地貌及古水动力方面的研究 ,认为可以识别出冲积扇、砾石质网状河、砂质网状河、曲流河、低弯度河、沼泽和淡水湖泊等沉积相类型 。

Detailed petrology, palaeocurrent direction, palaeogeomorphology, and palaeohydrauric studies were conducted for the Permian-Triassic Changfanggou group in the foredeck of the Bogeda Mountains at southeastern Junggar Basin, Xinjiang. Based on these studies, the types of sedimentary phases can be discerned among the alluvial fan, pebbly braided river, meandering river, sandy braided river, low-sinuosity river, swamp, and fresh-water lake. It was found that the formation and evolution of sedimentary environment are controlled strongly by climate and the source area tectonics.