Tectonic Evolution of the Tianhuan Depression and the Western Margin of the Late Triassic Ordos

查看全文 作　　者：LI Xiangbo LIU Huaqing WANYAN Rong WEI Lihua LIAO Jianbo FENG Ming MA Yuhu BAI [1]Yunlai

机构地区：[1]Northwest Branch, PetroChina Exploration and Development Research Institute, Lanzhou, Gansu 730020

出　　处：《Acta Geologica Sinica(English Edition)》索引2009年第83卷第6期,共12页

摘　　要：The Ordos Basin is one of the most important oil and gas basins in China. Based on surface outcrop, key exploratory wells and seismic reflection data and by using the technology of 'prototype basin recovery', seismic profile 'layer flattening' and 'restoration of balanced section',and other methods, the sedimentary boundary, structure and the evolution history of the Tianhuan depression on the western margin of the Ordos Basin are reestablished. The following results have been obtained. (1) The west boundary of the Late Triassic Ordos Basin was far beyond the scope of the current basin. The basin is connected with the Late Triassic Hexi Corridor Basin, and its western margin did not have tectonic characteristics of a foreland basin. (2) The Tianhuan depression was first formed in the Late Jurassic. At the late stage it was impacted by the late Yanshanian and Himalayan tectonic movement and the depression axis gradually moved eastwards to the present location with a cumulative migration distance of ~30 km. (3) Eastward migration of the depression axis caused adjustment and even destruction of the originally formed oil and gas reservoirs, so that oil and gas remigrated and aggregated, resulting in secondary structural reservoirs formed at high positions on the western flank of the depression. 关键词：鄂尔多斯西缘晚三叠世构造演化鄂尔多斯盆地西缘坳陷中国石油地震反射数据天然气藏

相关文献

参考文献（20）
引证文献（10）
耦合文献（1573）

参考文献(20)

引证文献(10)

耦合文献(1573)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Tectonic Evolution of the Tianhuan Depression and the Western Margin of the Late Triassic Ordos

参考文献(20)

引证文献(10)

耦合文献(1573)

用户提示