中南大学学报（自然科学版）Issue(6)：2196-2206,11.DOI:10.11817/j.issn.1672-7207.2015.06.030
鄂尔多斯盆地南部延长组层序地层特征及充填演化模式
Sequence stratigraphy characteristics and filling evolution model of Yanchang Formation in southern Ordos basin
摘要
Abstract
Through comprehensive analysis of seismic data interpretation, rock assemblage styles and logging data of Yanchang Formation in southern Ordos basin, five sequence boundaries were recognized in Yanchang Formation which were further divided into 1 first-order sequence(Yanchang Formation), 2 second-order sequences(Chang10-Chang7, Chang6-Chang1), 4 third-order sequences(Chang10-Chang9, Chang8-Chang7, Chang6-Chang4+5, Chang3-Chang1), and the sequence stratigraphic framework was also established. Based on the analysis of the episodic tectonic evolution, sediments supply for the basin, relative change of lake level and sedimentary filling characteristics, the development model of sequence sedimentary filling of Yanchang Formation in the study area was established, indicating that there are some differences in depositional system tracts and depositional compositions in the third-order sequence which was formed in each episodic tectonic evolution. According to the characteristics of sequence structure and sedimentary composition in different tectonic positions of the study area, it is considered that the main controlling factors of the above diversities and complexities are the differentiations of episodic tectonic activities and the complicated tectonic distribution patterns.关键词
鄂尔多斯盆地/延长组/层序地层/沉积充填/幕式构造演化Key words
Ordos basin/Yanchang Formation/sequence stratigraphy/sedimentary filling/episodic tectonic evolution分类
能源科技引用本文复制引用
陈林,陆永潮,邢凤存,胡小辉,杨帅,王超..鄂尔多斯盆地南部延长组层序地层特征及充填演化模式[J].中南大学学报（自然科学版）,2015,(6):2196-2206,11.基金项目
国家自然科学基金资助项目(41002045)(Project (41002045) supported by the National Natural Science Foundation of China) （41002045）
