摘要
准噶尔盆地侏罗系发育砾岩、砂岩和泥岩为主的含煤或不含煤层序 ,可以划分出 2个超层序、7个层序和 15个体系域。第一超层序由Ⅰ、Ⅱ、Ⅲ、Ⅳ层序组成 ,相当于八道湾组、三工河组及西山窑组 ;第二超层序由Ⅴ、Ⅵ、Ⅶ层序组成 ,相当于头屯河组、齐古组及喀拉扎组。各层序在不同的地区发育程度不同 ,具有不均衡性、不完整性及横向变化的分区性。对比分析显示 ,准噶尔盆地三级层序持续的时间周期约为 7～ 13Ma ,Ⅰ层序、Ⅳ层序、Ⅵ层序的的底界面分别与全球层序的UAB1、LZA1、LZA3的底界面一致。图 2表 1参
The Jurassic in Junggar basin is characterized by coal bearing or noncoal bearing strata which mainly consist of conglomerates, sandstones and mudstones, and can be divided into two supersequences, seven sequences and fifteen system tracts among which the first supersequence is composed of sequence Ⅰ, Ⅱ, Ⅲ and Ⅳ, respectively equivalent to Badaowan Formation, Sangonghe Formation and Xishanyao Formation of Group Shuixigou, the Lower and Middle Jurassic, and the second supersequence consist of sequence Ⅴ, Ⅵ and Ⅶ, respectively equivalent to Toutunhe Formation, Qigu Formation and Kalazha Formation of Group Shishugou, the Middle and Upper Jurassic. The sequence duration of the Jurassic in Junggar basin is 7-13Ma, and the basal boundaries of the sequences Ⅰ, Ⅳ and Ⅵ are consistent with those of the global sequences UAB1, LZA1 and LZA3.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2002年第1期48-51,共4页
Petroleum Exploration and Development
