| 黄骅坳陷中区古近系层序构成样式分析 |
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| 关键词:Bohai Bay basin Huanghua depression sequence components controlling factors |
| 基金项目:中国地质大学(武汉)优秀青年教师资助计划项目(编号:CUGQNL0642); 湖北省杰出青年基金项目(编号:2003ABB012) |
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| 摘要: |
| Styles of Sequence Components in the Central Area of the Huanghua Depression |
| Huanghua Depression is one of the most important oil and gas bearing basins in Bohai Bay basin of East China. On the basis of reflection characterisstics, well logging and other geological data, Shahejie Formation and Dongying Formation can be divided into three second-order sequences and eleven third-order sequences. Three system tracts can be recognized in each third-order sequence, which are lowstand system tract, expanding system tract and highstand system tract. Three typical tectonic backgrounds developed in the study area: ①Gentle slope characterized by slope break lies on the west side of Qinan sag, northwest side of Beidagang buried hill and its east-plunging part. Sequence styles of gentle slope break are developed in the above parts. ② Fault-controlled steep slope background can be seen on the south side of Nandagang buried hill and Beidagang buried hill. The above areas form the sequence style of fault-controlled steep slope. ③ The background of multilevel step-fault is Yangerzhuang fault terrace belt and the downthrow wall of Haihe fault. Tectonic activity is the main factor that controls the sequence components, and can be divided into microtectonic and local tectonic activities. Sediment source also mainly controls the sequence pattern. |
| LIAO Yuan-tao,WANG Zhen-sheng,XIAO Dun-qing,WEI A-juan,WANG Jia-hao,YAN De-tian.2008.Styles of Sequence Components in the Central Area of the Huanghua Depression[J].Acta Geoscientica Sinica,29(2):221-227. |
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