2011年6月，第17卷，第2期，271-280页 June2011，Vol.17，No.2，p.271280
高校地质学报
Geological Journal of China Universities
松辽盆地宾县一王府凹陷构造特征分析
程三友"，刘少峰2，苏三3
1.长安大学地球料学与资源学院，西安710054；2.中国地质大学地球科学与资源学院，北京100083：
3.雷佛龙德士古中国能源有限公司，北京100083
摘要：以松辽盆地宾县一王府凹陷为对象，采用构造-地层分析方法，通过选取多条地震剖面进行二维构造-地层解译和平衡恢复研究，并计算伸展量和伸展率，揭示出实县一王府凹陷的发育过程，并分析盆地总体结构特征和盆地形成机制。结果显示，火石岭组、沙河子组和营城子组属于初始裂陷期沉积；登娄库组沉积前的断陷盆地相受断层控制，登娄库组沉积期向塘坊镇降起上的超覆明显，盆内一些正断层对盆地沉降具有一定控制。登娄库组之后盆地已完全进入坳陷沉降期，表现为区域性整体沉降，沉降中心与早期断陷没有明显的对应关系，凹陷况降已经不受早期断陷控制；泉头组，特别是泉头组三段和青山口组沉积时期盆地主要表现为坳陷沉降；凹陷整体结构清楚地表现为下断上超的特点；凹陷的形成与近南北向右旋转换伸展作用有关。
关键词：松辽盆地；宾县一王府凹陷；平衡剖面；构造特征
中图分类号：P618.130.2
文献标识码：A
文章编号：1006-7493（2011)02-0271-10
StructuralAnaysisofBinxian-WangfuSaginSongliaoBasin
CHENG San-you',LIU Shao-feng”,SU San
1. School of Earth Sciences and Resources, Chang'an University, Xi'an 710054, China; 2. School of Earth Sciences and Resources
China University of Geosicences, Beijing 100083, China; 3. Chevron Asia South, Beijing 100083, China
Abstract: By means of two dimensional structure-stratigraphy interpretation of several seismic profiles, cross-section balancing. and calculation of extension amount and extension rates, the paper investigated developing process of the Binxian-Wangfu sag and analyzed the structural features and forming mechanism of the basin. The results show that BinxianWangfu sag was in the initial stage of rifting in the Huoshiling Formation, Shahezi Formation and Yingchengzi Formation, and the fault depression was mainly controlled by normal faults before the deposition of the Denglouku Formation, The sag onlaps to the Tangfangzhen uplift, and was also controlled to some extent by normal faulting within the basin during the deposition. The sag completely turmed into depression and exhibited regional subsidence after the deposition of the Denglouku Formation, and the subsidence center was not obviously corresponding to the early fault depression, and the subsidence of the BinxianWangfu sag was not controlled by the early fault depression. During the Quantou Formation period, especially the third segment and the Qingshankou Formation period the sag mainly showed depressional subsidence; The general structure of the basin was clearly marked by faults in the lower
section and onlap in the upper section, The basin formation was associaied with the the NStrending dextral transtension. Key words: Songliao Basin; BinxianWangfu sag; balanced cross section; tectonic feature
Author:ChengSanyou,Ph.D.E-mail:zysych@chd.edu.cn 收稿日期：2010-11-13；修四日期：2011-01-11
（）（）作者简介：程三友，1977年生，女，博士，讲师，主要从事构造地质学和通感地质学等方面的研究；E-mail:zysych@chd.edu.en