松辽盆地白垩系高分辨率层序地层格架

魏魁生; 徐怀大; 叶淑芬; 郭占谦; 徐宏; 任延广; 王玉华

doi:10.11743/ogg19970102

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松辽盆地白垩系高分辨率层序地层格架
HIGH RESOLUTION SEQUENCE STRITIGRAPHIC FRAMEWORK IN CRETACEOUS,SONGLIAO BASIN
1997年18卷第1期页码：7-14
网络首发：1997-03-25，

纸质出版：1997
DOI： 10.11743/ogg19970102
稿件说明：

移动端阅览

魏魁生, 徐怀大, 叶淑芬, 等. 松辽盆地白垩系高分辨率层序地层格架[J]. 石油与天然气地质, 1997,18(1):7-14. DOI： 10.11743/ogg19970102.

Wei Kuisheng, Xu Huaida, Ye Shufen, et al. HIGH RESOLUTION SEQUENCE STRITIGRAPHIC FRAMEWORK IN CRETACEOUS,SONGLIAO BASIN[J]. 1997, 18(1): 7-14. DOI： 10.11743/ogg19970102.

摘要

根据层序地层学的基本原理

提出以"风暴浪基面"或高水位期三角洲体系的"下超坡折"为陆架坡折的参照物

总结了松辽盆地白垩系层序边界的地震、测井及岩石学标志

划分出了时间跨度约为11.29Ma的7个二级超层序和时间跨度约为1.28Ma的47个三级层序

建立了高分辨率的地层格架。对比基准面升降曲线与海平面升降曲线

二者二级旋回变化趋势相似

唯前者的三级旋回频率高于后者

这是局部构造运动及复杂的气候因素所致。

Abstract

Based on the fundamental principle of sequence stratigraphy

the storm wave base or offlap break of initial highstand delta system could be regarded as the reference for the"shelf break"in passive margin. Accoring to well log and seismic sections of sequence boundaries in cores

seven supersequences and 47 sequences are identified

and high resolution sequence stratigraphic framework is built in Cretaceous of Songliao Basin.The periods for the supersequences and sequences are about 11.29 Ma and 1.28 Ma respectively. To compare the curves of rise and fall of both the base level and sea level in Songliao Basin

their secondary cyclic variation tendencies are the same

but the frequency of third cyclic variation of the former is higher.This is caused mainly by the factors of local tectonics and complicated climate.