古地理学报 ›› 2015, Vol. 17 ›› Issue (3): 359-370. doi: 10.7605/gdlxb.2015.03.30

• 岩相古地理学及沉积学 • 上一篇    下一篇

内蒙古林西地区上二叠统林西组沉积环境与演变

翟大兴1,2,张永生1,田树刚3,吴非蒙1,4,邢恩袁1,王猛1,4,施立志1,5,王卓卓1,5   

  1. 1 中国地质科学院矿产资源研究所,国土资源部盐湖资源与环境重点实验室,北京 100037
    2 中国地质大学(北京)地球科学与资源学院,北京 100083
    3 中国地质科学院地质研究所,北京 100037
    4 长江大学地球科学学院,湖北武汉 430100
    5 中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆 163712
  • 收稿日期:2014-10-29 修回日期:2014-11-23 出版日期:2015-06-01 发布日期:2015-06-01
  • 作者简介:翟大兴,男,1983年生,在读博士生,主要研究方向为矿产普查与勘探专业。E-mail: weinyuan@163.com。
       通讯作者简介 张永生,男,1963年生,研究员,博士生导师,主要从事盐湖学和沉积学研究。E-mail: zys_601@126.com。
  • 基金资助:
    国家自然科学面上基金项目(编号:41472027)和中国地质调查局项目“乌拉特—赤峰盆地群页岩气资源综合调查”(编号:1212011120972)联合资助

Sedimentary environment and evolution of the Upper Permian Linxi Formation in Linxi area, Inner Mongolia

Zhai Daxing1,2, Zhang Yongsheng1, Tian Shugang3, Wu Feimeng1,4, Xing Enyuan1
Wang Meng1,3, Shi Lizhi1,5, Wang Zhuozhuo1,5   

  1. 1 MLR Key Laboratory of Saline Lake Resources and Environments,Institute of Mineral Resources,
    Chinese Academy of Geological Sciences,Beijing 100037
    2 School of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083
    3 Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037
    4 School of Geosciences,Yangtze University,Wuhan 430100,Hubei
    5 Exploration and Development Research Institute,PetroChina Daqing Oilfield Company Limited,Daqing 163712,Heilongjiang
  • Received:2014-10-29 Revised:2014-11-23 Online:2015-06-01 Published:2015-06-01
  • About author:Zhai Daxing,born in 1983,is a Ph.D. candidate in Institute of Mineral Resources,Chinese Academy of Geological Sciences. Now he is mainly engaged in mineral prospecting and exploration. E-mail: weinyuan@163.com.
       About the corresponding author Zhang Yongsheng,born in 1963,is a professor of Institute of Mineral Resources,Chinese Academy of Geological Sciences. Now he is mainly engaged in saline lake science and sedimentology. E-mail: zys_601@126.com

摘要: 内蒙古东部林西地区上二叠统林西组沉积环境存在争议。鉴于此,笔者在前人研究基础上,通过详实的野外观测与室内鉴定,依据古生物、沉积构造与岩相、地球化学等资料,对林西组沉积环境进行研究;从钙藻、苔藓虫、海绵等海相生物化石、B/Ga值、碳氧同位素和沉积结构构造等方面,认为林西组主体为海相,存在海陆过渡相。林西组沉积环境可划分为三角洲前缘、滨海、浅海和半深海。生物礁主要为蓝绿藻粘结礁和藻粘结骨架礁,指示滨海—浅海环境。林西组沉积环境主要经历了滨海、半深海、三角洲前缘、浅海和滨海的演变,沉积盆地演化分为抬升—断陷—快速充填—稳定沉陷—稳定充填5个阶段。

关键词: 内蒙古, 上二叠统, 林西组, 沉积环境

Abstract: Sedimentary environment of the Upper Permian Linxi Formation in eastern Inner Mongolia has been in dispute for a long time. Herein, based on previous research data, the environment is discussed in this paper after detailed field and indoor study on palaeontology,sedimentary structure,lithofacies,geochemistry etc. Evidences from marine fossils(calcareous algae,bryozoans,and sponges),B/Ga value,carbon and oxygen isotopes,sedimentary structure,and other aspects show that the Linxi Formation is mainly of marine facies along with partial transitional facies. It is principally divided into delta front,littoral,shallow sea and semi ̄deep sea. Reefs mainly include blue green algae bonding reefs and algal bonding framework reefs,suggesting a littoral and shallow sea environment. The depositional environment of Linxi Formation developed from littoral,semi ̄deep sea,delta front,shallow sea to littoral,while the evolution of sedimentary basin was divided into five stages, including uplift,rift,rapid,filling, steady subsidence and stable filling stages.

Key words: Inner Mongolia, Late Permian, Linxi Formation, sedimentary environment

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