• 责任者：Liu Jiaduo (Key Laboratory of Oil and Gas Reservoir Geology and Exploitation ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Wang Jun
• 刊名：Journal of Earth Sciences and Environment
• 出版年：2013
• 卷期：35(1)
• 关键词：白垩纪 ; Cretaceous ; 层序地层学 ; sequence stratigraphy ; 塔里木盆地 ; Tarim Basin
• 页码：p.1-14
• 图表：illus., 2 tables, 33 refs.
• 分类号：1200
• issnNo：ISSN1672-6561
• isbnNo：CN61-1423/P

Based on the outcrop section and drilling sequence stratigraphy in the southern of Tianshan, combined with the seismic data, Cretaceous in northern Kashi area of Tarim Basin could be divided into 2 mega-cycle sequences, 4 super long-term cycle sequences and 8 long-term cycle sequences. The sequenee-lithology palaeogeography characteristic was that the sedimentary facies varied from continentally fluvial-lacustrine delta to marine delta, and then to restricted platform from bottom to top during the constant sea level ascending period. According to the mudstone microelement analysis, it was considered that the northern Kashi area was affected by Paleo-Tethys Ocean at upper Kezilsu Group sub-cycle of lower Cretaceous; during the transgression process, linked and overlain regressive delta-front deposit was formed with rich carbonate cement in the sand interval. The thick sandstone sub-cycle at the upper part of lower Cretaceous and the gypsum mudstone in upper Cretaceous and Paleogene formed favourable reservoir caprock assemblage, which was considered as the most important hydrocarbon reservoirin northern Kashi area.