Tectono-paleogeographic study of the Early Cretaceous in the Songliao Basin

作     者：Liu Hua Chi Xiaoyan Li Wei 

作者机构：School of Earth Science and Resource China University of Geosciences Beijing 100080 China College of Geological Science ＆ Engineering Shandong University of Science and Technology Qingdao 266510 China 

出 版 物：《Mining Science and Technology》 (矿业科学技术（英文版）)

年 卷 期：2011年第21卷第1期

页      面：93-98页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 081803[工学-地质工程] 0709[理学-地质学] 07[理学] 08[工学] 0818[工学-地质资源与地质工程] 

主　　题：Songliao Basin Early Cretaceous Fault structure Sedimentary face Paleogeography 

摘      要：Based on first-hand material from the geological exploration of petroleum,we made a detailed study of the tectonic development in the Early Cretaceous and the distribution of basement rifts in the Songliao *** sedimentary characteristics of this epoch and the tectono-paleogeography of the basin were *** results show that in its early stages,the Songliao Basin was characterized by a detached faulted basin in which mainly lake facies developed among *** became gradually one lake during the late stages of the Early *** this period,the fault activity in the Songliao Basin changed from a turbulent to a quiet development,the water area from small separated lakes to one large lake,in which the sedimentary facies were divided into asymmetric eastern and western *** the basin a volcanic clastic rock-alluvial fan system developed and a fan delta-lake-small delta-river system was mainly *** research also shows that the basement rifts not only controlled the distribution of fault depressions and the tectonic development in the Early Cretaceous,but had also an effect on the orientation of sedimentation,source area and river system,which determine the tectonopaleogeography of the Early Cretaceous.