Sequence Stratigraphy of Benxi-Taiyuan Formation in Eastern Ordos Basin
详细信息
- 责任者：Shen Yulin (School of Resources and Earth Science ; China University of Mining and Technology ; Xuzhou ; Jiangsu 221008 ; China) ; Guo Yinghai
- 刊名：Acta Geoscientica Sinica
- 出版年：2009
- 卷期：30(2)
- 关键词：本溪组 ; Benxi Formation ; 太原组 ; Taiyuan Formation ; 鄂尔多斯盆地 ; Ordos Basin
- 页码：p.187-193
- 图表：5 illus., 1 table, 21 refs.
- 分类号：1200
- issnNo：ISSN1006-3021
- isbnNo：CN11-3474/P
摘要
Based on a study of the vertical sedimentary sequence, the assemblage of vertical lithology, geochemical analyses of mudstone samples, and logging characteristics, the authors recognized such sequence stratigraphy interfaces as regional unconformity, regional tectonic regime interface, sedimentary system interface and transgression surface. The Benxi-Taiyuan Formation was formed in an epicontinental sea that had subdued floor, so most of the sequence structures in Benxi-Taiyuan Formation are of dual system character. Tectonic disturbance, sea level change and differential compaction provided enough accommodation space for the distribution of K1 sandstone and Qiaotou sandstone. The framework and model of sequence stratigraphy in Benxi-Taiyuan Formation within eastern Ordos basin are established in this paper, which contains type I model of ramp marginal basin and type IIof ramp in an epicontinental sea background.
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