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Application of the Theory of High-Resolution Sequence Stratigraphy to Junggar Basin
Author(s): 
Pages: 249-256
Year: Issue:  2
Journal: ACTA SEDIMENTOLOGICA SINICA

Keyword:  吉木萨尔凹陷高分辨率层序地层学基准面旋回地层对比圈闭识别;
Abstract: 在准噶尔盆地吉木萨尔凹陷东斜坡开展高分辨率层序地层学研究,识别出三种准层序类型,对应三种短期基准面旋回:基准面上升型、基准面下降型、基准面下降半旋回和上升半旋回两部分构成的复合型准层序.两种中期基准面旋回:中期基准面下降旋回,由多个进积式的短期旋回组成;中期基准面上升旋回,地层堆叠样式则呈退积结构.研究区梧桐沟组可划分为5个准层序组(中期基准面旋回),自下而上依次为 S1、S2、S3、S4、S5,基准面上升期形成S1、S2,基准面下降期形成S3、S4、S5.吉7井和吉17井梧桐沟组出油砂层属于不同的准层序组,成因不同,因而不是同一砂组.
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