石油与天然气地质 ›› 1995, Vol. 16 ›› Issue (1): 31-38.doi: 10.11743/ogg19950104

• 论文 • 上一篇    下一篇

大龙口地区仓房沟群的沉积环境及其演化

楼章华1, 赵霞飞2, 刘志刚3, 王瑶3   

  1. 1. 中国科学院地球化学研究所, 贵阳, 550002;
    2. 成都理工学院, 610059;
    3. 新疆石油管理局, 克拉玛依, 884000
  • 收稿日期:1991-03-07 修回日期:1992-10-26 出版日期:1995-03-25 发布日期:2012-01-16

SEDIMENTARY ENVIRONMENT AND ITS EVOLUTION OF CHANGFANGGOU GROUP IN DALONGKOU REGION

Lou Zhanghua1, Zhao Xiafei2, Liu Zhigang3, Wang Yao3   

  1. 1. Institute of Geochemistry, Acadenmy of Chinese Sciences;
    2. Chengdu Institute of Technology;
    3. Xinjiang Petroleum Administration Bureau
  • Received:1991-03-07 Revised:1992-10-26 Online:1995-03-25 Published:2012-01-16

PDF (PC)

725

被引次数

7

摘要：

仓房沟群(P2-T1)发育于准噶尔盆地的东部,厚1000m士,由冲积扇、曲流河、低弯度河、网状河和湖泊相组成。沉积特征和变化反映了气候逐渐干旱、植物逐渐稀少和周期性活动的构造背景。气候和构造的变化导致沉积环境的演化,曲流河演化到低弯度河是由温暖、潮湿的气候和植物丰富的自然环境演化到炎热、半干旱的气候和极少或无植物环境的过程。随着物源区抬升,低弯度河网状化,发育楔状网状河相。

关键词: 冲积扇, 河流相, 河流演化, 沉积环境, 仓房沟群

Abstract:

The Changfanggou Group(P2-T1),developed at the east part of Junggar is represented by some 1000m of elastic sediments which comprises fluvial-fan factes,meandering stream factes and low-sinuosity stream facies,braided stream factes and lacustrine fade.Sedimentary properties and the changes in fluvial styles reflect an increasing aridity and decreasing flora population under cyclic tectonic active condition during P2-T1 period.The changes in paleoclimate and paleotectonics resulted in the variation of sedimentary environment.The variation from meandering stream to low-sinuosity stream was a process from warm and humid climate,luxuriant plants to hot and semiarid climate, nonvegetation enveronment.The low sinuosity streams become braid streams and wedge-shaped braid factes developed in the study area with the uplift of provenance.