【作者】 黄蝶芳；

【导师】 吕洪波； 陈启林；

【作者基本信息】 中国石油大学 ， 地质学， 2010， 硕士

【摘要】 柴达木盆地三湖坳陷台南9井区新生代以来经历了喜山运动以及第四纪末期新构造运动的影响,同时也受到了盆地基底构造分布格局的控制,才形成了现今的构造样式,其构造特征主要为同沉积背斜构造特点。本文通过测井资料,古生物资料,岩石物理资料,岩芯资料等进行了详细的沉积相研究;同时,进行了高分辨率地震测线的地震解释,并完成了研究工区的精细构造建模,建立了研究工区精细构造模型。通过本次研究认识了台南9井区构造和沉积在新生代时期的特点,认识如下:湖盆形成阶段(E₁₊₂-N₂³):古新世到上新世,三湖坳陷还未形成;上新世末期（N₂²）柴达木盆地受早期喜山运动的影响,盆地西北部开始抬升,沉积中心由一里坪地区向三湖地区迁移,湖盆开始形成。湖盆鼎盛阶段（N₂³-Q₄）:在上新世末期至第四纪更新世早期,由于印度板块向北俯冲以及青藏高原大幅度上升,致使柴达木盆地沉积中心迅速向东迁移至三湖地区,该区地层受到挤压走滑作用发生下坳,扩大了湖盆的范围,更新世中期湖盆达到鼎盛时期,接受了巨厚的湖相沉积,为湖盆鼎盛阶段。湖盆消亡阶段（Q₄-现今）:全新世末期的新构造运动,造成柴达木盆地整体抬升,湖盆水体变浅,只残留盐湖,沼泽,随着时间的推移,湖盆将消失。更多还原

【Abstract】 For Tainan 9 Well Area of SanHu Depression in Qaidam Basin has undergone the Himalayan movement and the late Quaternary Neotectonics, and controlled by the distribution of the basement structure in the basin, it can form the structural styles at present, and the tectonics are mainly synsedimentary anticline structures.This thesis deals with the sedimentary facies through logging, paleontology, petrophysical data, core sampling data and so on. The author, in this thesis, has tried the seismic interpretation in the high-resolution seismic lines, finished the fine structure modeling and established the fine structural model for the research area. The major characteristics of Cenozoic sedimentation and Structures in the Tainan 9 Well Area are:Lake formation phase (E₁₊₂-N₂³): from Paleocene to the Pliocene, three lakes depression has not yet formed; the late Pliocene （N₂²）, Qaidam Basin by the early Himalayan movement began to uplift to the northwest, deposition center changed from a YiLiping to the Three Lakes, so the lake formed.Lake peak phase （N₂³-Q₄）: In the late Pliocene to early Pleistocene, due to the subduction of the Indian plate and the Tibetan Plateau increased substantially, resulting in the center of Qaidam basin rapidly eastward to three lake areas, for strike-sliping occurs by the extrusion subsurface, mid-Pleistocene lake basin reached its peak, accepted the thick lacustrine deposits, the lake reached its peak phase.Lake extinction phase （Q₄-now）: The Holocene tectonic movement caused the Qaidam Basin to uplift, and shallow the lake water, only residual salt lakes, swamps, over time, the lake will disappear.更多还原