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 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
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.
Fund: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)
Corresponding Authors:
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.
Cite this article:
Song Huibo,Bi Yujun,Hu Bin. Responding characteristics between ichnofossils and palaeo-oxygen facies in the Lower Permian Taiyuan Formation of western Henan Province[J]. JOPC, 2017, 19(4): 653-662.
Song Huibo,Bi Yujun,Hu Bin. Responding characteristics between ichnofossils and palaeo-oxygen facies in the Lower Permian Taiyuan Formation of western Henan Province[J]. JOPC, 2017, 19(4): 653-662.
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