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古地理学报 ›› 2017, Vol. 19 ›› Issue (4): 653-662. doi: 10.7605/gdlxb.2017.04.051

• 生物古地理学及古生态学 • 上一篇    下一篇

豫西下二叠统太原组遗迹化石与古氧相的响应特征*

宋慧波1,2, 毕瑜珺1, 胡斌1,3   

  1. 1 河南理工大学资源环境学院,河南焦作 454003;
    2 河南省中原经济区煤层气与页岩气协同创新中心,河南焦作 454003;
    3 河南省生物遗迹与成矿过程重点实验室,河南焦作 454003
  • 收稿日期:2017-02-09 修回日期:2017-03-02 出版日期:2017-08-01 发布日期:2017-08-07
  • 通讯作者: 胡斌,男,1952年生,教授,博士生导师,主要从事古生物地层学、遗迹学和沉积学的教学和研究工作。E-mail: hub@hpu.edu.cn。
  • 作者简介:宋慧波,女,1979年生,副教授,博士,主要从事古生物地层学、遗迹学和沉积学教学与研究工作。E-mail: songhuibo2005@hpu.edu.cn。
  • 基金资助:
    *国家自然科学基金项目(编号: 41102002,41272117),河南省基础与前沿项目(编号:162300410256)和河南理工大学博士基金项目(编号: B2013-075)共同资助

Responding characteristics between ichnofossils and palaeo-oxygen facies in the Lower Permian Taiyuan Formation of western Henan Province

Song Huibo1,2, Bi Yujun1, Hu Bin1,3   

  1. 1 School of Resource and Environment,Henan Polytechnic University,Jiaozuo 454003,Henan;
    2 Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region of Henan Province,Jiaozuo 454003,Henan;
    3 Key Laboratory of Biogenic Traces & Sedimentary Minerals of Henan Province,Jiaozuo 454003,Henan
  • Received:2017-02-09 Revised:2017-03-02 Online:2017-08-01 Published:2017-08-07
  • Contact: Hu Bin,born in 1952,is a professor and Ph.D. supervisor of Henan Polytechnic University. He is mainly engaged in teaching and researches of paleontology and stratigraphy,ichnology and sedimentology. E-mail: hub@hpu.edu.cn.
  • About author:Song Huibo,born in 1979,is an associate professor with Ph.D. degree of Henan Polytechnic University. She is mainly engaged in teaching and researches of paleontology and stratigraphy,ichnology and sedimentology. E-mail: songhuibo2005@hpu.edu.cn.
  • Supported by:
    Co-funded by the National Natural Science Foundation of China(Nos.41102002,41272117),the Basic and Frontiers Research Program of Henan Province(No.162300410256) and the Doctoral Foundation of Henan Polytechnic University(No.B2013-075)

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摘要： 基于对豫西禹州和焦作地区下二叠统太原组中的遗迹化石组成与产状特征的研究,以及对不同颜色Zoophycos潜穴充填物中碳氧同位素和微量元素含量的测试分析,取得成果如下: (1)灰白色充填物中δ13C值较低,主要介于-2‰~-4‰之间;灰色充填物中δ13C值大多在-0.8‰~-2‰之间。二者的V/(V+Ni)值均小于0.46,Ce/La值均小于1.5。反映其为富氧相,即氧化环境。(2)红褐色充填物中δ13C值一般在-0.2‰~-0.9‰之间,V/(V+Ni)值大于0.46,反映其为贫氧相,即弱还原环境。(3)黑色充填物中δ13C值最高,多数在0.2‰~1.6‰之间,Ce/La值大于1.8,反映其为厌氧相,即还原环境。综合分析上述特征,提出了3种古氧相(富氧相、贫氧相和厌氧相)的遗迹化石响应关系及其形成的沉积背景模式。这一研究成果可为精细分析豫西下二叠统太原组碳酸盐岩的沉积环境演变规律提供直观的生物遗迹识别标志。

关键词: 遗迹化石, 古氧相, 沉积环境, 下二叠统, 太原组, 豫西地区

Abstract: On the basis of the composition and appearance study of the ichnofossils in the Lower Permian Taiyuan Formation of Yuzhou and Jiaozuo area of western Henan Province,as well as tests and analyses of the δ13C,δ18O and trace elements in the four kinds of different color fillings of Zoophycos burrows,the results were obtained as follows: (1)The δ13C value ranges between -2‰ and -4‰ in the off-white fillings and between -0.8‰ and -2‰ in the gray fillings. In these two kinds of color fillings,the V/(V+Ni) value is less than 0.46,and the Ce/La value is less than 1.5. These data indicate that the sedimentary environment is characterized with an aerobic condition. (2)The δ13C value ranges generally between -0.2‰ and -0.9‰,and the V/(V+Ni)value is more than 0.46 in the brown fillings,which reflect a dysaerobic sedimentary environment. (3)The δ13C value ranges mostly between 0.2‰ and 1.6‰,and the Ce/La value is more than 1.8 in the black fillings,which reflect an anaerobic sedimentary environment. Based on the comprehensive analysis of above mentioned characteristics,we suggested the responding characteristics model between the three kinds of palaeo-oxygen facies(aerobic,dysaerobic and anaerobic facies)and ichnofossils and their sedimentary setting. This research result can provide some intuitional ichnofossil marks to identify sedimentary environment changes in the carbonate rocks of the Lower Permian Taiyuan Formation in western Henan Province.

Key words: ichnofossils, palaeo-oxygen facies, sedimentary environment, Lower Permian, Taiyuan Formation, western Henan Province

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