• 责任者：Yang Yong (School of Geosciences ; China University of Petroleum ; Qingdao 266555 ; China) ; Chen Shiyue
• 刊名：Journal of China University of Petroleum
• 出版年：2011
• 卷期：35(5)
• 关键词：Lower Cretaceous ; 层序地层学 ; sequence stratigraphy ; 沉积演化 ; sedimentary evolution ; 准噶尔盆地 ; Junggar Basin
• 页码：p.20-26
• 图表：6 illus., 17 refs.
• 分类号：1200
• 出版序号：1913
• issnNo：ISSN1673-5005
• isbnNo：CN37-1441/TE

Based on the theory of sequence stratigraphy, the sequence stratigraphy and sedimentary evolution of Lower Cretaceous series in Chepaizi area, northwestern margin of Junggar Basin were studied by comprehensive application of seismic data, drilling data, logging, outcrop data, paleontological data and well-seismic calibration. The results show that Lower Cretaceous can be divided into two third-order sequences. The lower part of sequence KSI develops well. The lowstand system tract (LST) is dominated by braided river and fan-delta. The feature of down cutting valley is obvious. Transgressive system tract (TST) is mostly made up of shoreface/offshore deposits. The highstand system tract (HST) mostly consists of fan-delta and shoreface/offshore deposits. The top part of sequence KSII can be classified into 2 system tracts. The ancient climate change of Lower Cretaceous plays an important role during the sequence development.