松辽盆地反转期的界定  

Determination of the reverse period of Songliao Basin,China

作　　者：陈骁[1] 李忠权[1] 陈均亮[1,2] 李洪奎[1] 张彤[1] 

机构地区：[1]油气藏地质及开发工程国家重点实验室/成都理工大学,四川成都610059 [2]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《地质通报》2010年第2期305-311,共7页Geological Bulletin of China

基　　金：国家自然科学基金项目<托斯台伸展角度不整合与准噶尔盆地南缘成盆构造动力学研究>(编号:40773030);国家自然科学基金项目<龙门山前陆盆地南北段构造特征差异及成因机理研究>(编号:40573002)资助

摘　　要：松辽盆地的构造反转对油气生成、运移和聚集保存有明显的控制作用。以往的研究认为,松辽盆地晚期经历了嫩江组沉积末期、明水组沉积末期和古近纪的多期反转。通过对松辽盆地北部进行剖面与平面的构造演化分析,认为嫩江组沉积末期为南北向差异升降活动,未引起地层褶皱变形和构造格局的改变,该期形成了区域伸展不整合面;明水组沉积末期松辽盆地从区域拉张转为挤压,盆地表现为东西向缩短,构造格局发生了性质上的变化,形成了一系列反转构造,该期构造反转奠定了盆地现今的构造格局。构造物理模拟实验进一步证明,松辽盆地不同方向的反转构造带为明水组沉积末期形成的。The tectonic reverse of Songliao Basin has contributed to the formation and migration of oil and gas, as well as their accumulation. Based on the previous work, some researchers suggested that the development of the Songliao Basin during its late stage had experienced the late deposition stage of Nenjiang Group （LN）, late deposition stage of Mingshui Group （LM）, and the multistages reverse during Early Tertiary. In this paper, according to the structural analysis on the features of both surface and subsurface of the northern Songliao Basin, it reveals that the the late deposition stage of Nenjiang Group was characterized by the south-northwards differential uplifting, which didn＇t result into folding of the terrane and changing of the tectonic frame, but accounted for the formation of the extensional unconformity. During late deposition stage of Mingshui Group, the evolution of Songliao Basin has experienced the variation from extension to compression which resulted in the west-eastwards shortening and a series of reverse structures. The reverse evolution during the late deposition stage of Mingshui Group is significant on the formation of current structures of Songliao Basin. According to the tectonophysical modeling, the heterogeneous reverse evolution of Songliao Basin can be concentrated in the late deposition stage of Mingshui Group.

关 键 词：明水组沉积末期 构造反转 构造物理模拟实验 松辽盆地 

分 类 号：P544.4[天文地球—构造地质学] P512.2[天文地球—地质学]