伊舒地堑方正断陷新安村组沉积微相研究  

The sedimentary macro-facies characteristics of Xin'an village group in FangZheng fault area of YiShu graben

作　　者：陈宪保[1] 柳成志[1] 董秀超[1] 李国一[1] 

机构地区：[1]大庆石油学院地球科学学院,黑龙江大庆163318

出　　处：《上海地质》2008年第3期41-44,共4页

基　　金：大庆油田有限责任公司勘探开发研究院(YJYK-TWX200700)

摘　　要：依据岩心、地震、测井和录井资料,应用层序地层学和沉积学的原理和方法,查明了伊舒地堑方正断陷新安村组沉积微相特征.结果表明,方正断陷新安村组发育的沉积微相类型主要为分流河道、水下分流河道、河口坝、席状砂、滨浅湖砂质滩坝、泥质滩坝.在平面上沿北西部断裂向断陷中间依次过渡为扇三角洲平原、扇三角洲前缘、湖泊相,部分区域发育湖底扇;沿南东部断裂向断裂中间依次发育扇三角洲前缘和湖泊相.扇三角洲相在北部发育,湖泊相在南部和中部发育。According to core, seismic, well log and logging data, utilizing the principles and methods of sequence stratigraphy and sedimentology to identify the sedimentary micro -facies characteristics of Xin＇an village group in FangZheng fault area of yishu graben. The result shows that the main type of the sedimentary micro -facies developed in Xin＇an village group of Fangzheng area is distributary channels, underwater distributary channels, river mouth bars, sand sheets, shore - shallow lacustrine sandy beach bar and mud bar. Along the edge of the northwest fault to the midst of the fault, it has transition from fan deltaic plain subfacies, fan deltaic front subfacies to lacustrine facies in the plane, parts of the region has developed sublacustrine fan. Along the southeast fault to the middle has developed deltaic front subfacies and lacustrine facies, deltaic facies has developed in the north and lacustrine facies developd in the south.

关 键 词：方正断陷 沉积微相 扇三角洲相 湖泊相 

分 类 号：P618.130.2[天文地球—矿床学] TE122.3[天文地球—地质学]