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### 鄂尔多斯盆地伊陕斜坡上的低幅度构造特征及成因探讨

1. 西安石油大学 地球科学与工程学院, 陕西 西安 710065
• 出版日期:2018-03-15 发布日期:2018-03-15
• 作者简介:王建民(1962—)，男，博士，教授，主要从事沉积、储层、油气成藏及开发地质等方面的教学与科研工作。E-mail:wangjm@xsyu.edu.cn
• 基金资助:
This work was carried out in the Yanwumao block of Zhidan oilfield in the Ordos Basin. Based on a wealth of drilling data, threedimensional modeling of largescale dense well pattern and multifactor composite analysis from both macro and micro perspective, the characteristics and genesis of low amplitude structures on the Yishaan slope in the Ordos Basin were explored. Results show that the lowamplitude structures developed widely; simple and inerratic macroscopic characteristics of the structures can be seen through microscale sparse well pattern, while more refined and complex microscopic characteristics are shown through largescale dense well pattern. Each macroscopic low amplitude structure consists of a series of microscopic structures bearing local trap; its tectonic axis direction is close to the EW direction, perpendicular to the direction of the regional sedimentary facies belt distribution, and not conform to the formation conditions of differential compaction structure. The tectonic stress field was the power source in developing the essential characteristics of low amplitude structures of directional extension, sidebyside fold combination, largescale development, regional distribution and inheritance evolution. The comprehensive effect of the Indosinian, Yanshan and Himalayan threeperiod stress field on the Yishan slope embodied a form of SN compressional stress and pressuretorsion impact, resulting in sedimentary cover so as to generate a series of nose folds that stretched nearly along the EW and arrayed regularly. At the same time, the adjustment of the subsequent two periods of the stress fields forced the macroscopically simple low amplitude structures of Indosinian, developed into a series of microscopically more complex and changeable low amplitude structures through inheritance evolution, therefore eventually formed the special low amplitude structural patterns which contain “both simple and complex” characteristics on the Yishan slope.

### Sequence stratigraphy of the carbonate platform of the Upper Carboniferous Chuanshan Formation and relative sea level change control in the Lower Yangtze region: an example from outcrops in Jurong City, Jiangsu Province.

WANG Jianmin,ZHANG San

1. School of Earth Sciences and Engineering, Xian Shiyou University, Xian 710065, China
• Online:2018-03-15 Published:2018-03-15
• Supported by:
Ordos Basin; Yishaan Slope; Yanwumao block; low amplitude structure; low amplitude structure characteristics; low amplitude structure genesis