【摘要】 以地震沉积学为主要方法,通过对典型地层切片和单井相沉积特征分析,研究准噶尔盆地乌夏地区中下二叠统沉积相发育特征,并总结乌夏地区三叠系的沉积过程。结果表明:乌夏地区中下三叠统90°相位地震资料与岩性相关性较好,90°相位地震资料主要同相轴与地质上砂泥岩层对应一致;研究区主要发育扇三角洲相、冲积扇相、三角洲相和下切谷等沉积;乌夏地区三叠纪百口泉组时期发育冲积扇和冲积平原沉积体系,克拉玛依组时期发育扇三角洲沉积体系。更多还原

【Abstract】 By using the seismic sedimentology method and analyzing the depositional charateristics of thin section of typical formation and single-well facies,growth characteristics of sedimentary facies of Middle and Lower Triassic in Wu-Xia area,Junggar Basin were investigated.And the depositional history of study area was summarized.The results show that 90°-phased seismic data have good relationship with log lithologies,and seismic traces can be interpreted as lithologic logs in the study area.Fan delta facies,alluvial fan facies,delta facies and incised valley were identified in the Middle and Lower Triassic.Alluvial fan and alluvial plain system dominated in Baikouquan formation,and fan deltaic sedimentary system dominated in Karamay formation.更多还原