第29卷第5期 2015年10月
现代地质 GEOSCIENCE
Vol.29No.5
Oct.2015
松辽盆地东南缘籍家岭泉头组沉积微相特征及演化：由冲积扇演化为曲流河的典型露头部面
刘朋远，柳成志2，辛仁臣1
（1.中国地质大学（北京）海洋学院，北京100083；2.东北石油大学地球科学学院，黑龙江大庆163318）
摘要：以松辽盆地东南缘籍家岭泉头组露头为研究对象。通过对露头的野外实测及粒度分析，揭示了籍家岭泉头组露头是由冲积扇演化为曲流河相的典型露头剖面。垂向上，露头从0~28m发育冲积扇相，28~70m发育辫状河相，70 ~510m发育曲流河相。其中冲积扇相发育扇中、扇端2种亚相，区分出泥石流沉积、泥流沉积、扇面河道沉积、漫流沉积、淤积物5种微相。辫状河相发育河道、河漫2种亚相，区分出滞留沉积、心滩、河漫滩3种微相。曲流河相发育河道、堤岸及河漫3种亚相，区分出滞留沉积、边滩、天然堤、决口扇、河漫滩5种微相。粒度概率曲线分析结果显示：冲积扇为悬浮一段式及滚动一跳跃一悬浮三段式、辩状河为滚动一跳跃一悬浮三段式、曲流河为跳跃一悬浮二段式的组合特征。冲积扇一辩状河一曲流河这一演化过程反映了松辽盆地东南缘泉头组沉积时期较大的地势高差一陡坡一准平原化的古地理背景。
关键词：松辽盆地；籍家岭露头；泉头组；沉积相；沉积演化
中图分类号：TE122.2
文献标志码：A
文章编号：10008527(2015)06133810
Sedimentary Microfacies Characteristics and Evolution of Quantou Formation in Jijialing Profile in the Southeast Margin of the Songliao Basin: A Typical
ProfileReflectingtheEvolutionofAlluvialFantoMeanderingRiver
LIU Peng-yuan',LIU Cheng-zhi'，XIN Ren-chen'
(1. School of Ocean Sciences, China Unirersity of Geosciences, Bejing 100083, China ; 2. Geoscience College, Northeast Petroleum Unisersity, Daqing, Heilongjiang163318, China)
Abstract: The sedimentary characteristics are treated in this study for Jijialing profile which is located in the southeast margin of the Songliao basin. According to the accurate investigation and granulometric analysis, Ji-jialing profile is a typical profile which reflected the evolution of alluvial fan to meandering river. Vertically, the profile developed alluvial fan facies from O to 28 m, braided river facies from 28 to 70 m and meandering river facies from 70 to 510 m. The alluvial fan was divided into two subfacies, namely medial fan and distal fan. The two subfacies can be subdivided into five microfacies, namely debris flow, mudflow, fun-surface channel, cross flow and shoal materials. The braided river was divided into two subfacies, namely channel and floodplains. The two subfacies can be subdivided into three microfacies, namely channel lag deposit, braided bar and overbank. The meandering river was divided into three subfacies, namely channel, channel levee and floodplains. The three subfacies can be subdivided into five microfacies, namely channel lag deposit, point bar, natural levee, crevasse fan and overbank. The characteristics of probability cumulative grain size curves
收稿日期：2015-03-12；改回日期：2015-06-07；责任编辑：孙义梅。
基金项目：国家科技重大专项"岩性地层油气藏成藏规律、关健技术及目标评价”（2011ZX05001002）。
作者简介：刘朋远，男，博士研究生，1987年出生，海洋地质专业，主要从事含油气盆地沉积学、层序地层学、储层预测方面
的研究工作。Email：liupengyuan0523@163.com。
通信作者：柳成志，男，博士，教授，1962年出生，矿产普查与勘探专业，主要从事沉积学、层序地层学、石油地质方面的研
究工作。Email：lchzhdq@ sina.com，