松辽盆地北部大庆长垣以东地区深层沉积特征

DEEP LAYER SEDIMENTARY CHARACTERISTICS TO THE EAST OF DAQING PLACANTICLINE IN NORTH PART OF SONGLIAO BASIN

本文在地质、地震、测井综合分析基础上，总结了大庆长垣以东地区沉积分布及特征。指明断陷期地层具有东老西新、南老北新的三维沉积分布格局，提出断陷期地层以辫状平原扇、辫状河（辫状河三角洲）—湖相为特征的沉积模式，认清断陷由东向西充填以及断陷阶段古地理格局。

Based on comprehensive analysis of geology, seismic and logging, this paper concludes out the sedimentary distribution and characteristics to the east of Daqing placanticline, pointing out that the formations during depression period bear the 3-D sedimentary distribution framework of east old west new and south old north new, and the sedimentary mode bears the characteristics of braided plain fan, braided river (braided delta)-lacustrine facies, recognizing the infilling from east to west in the depression and the palaeogeographic framework during depression period.