Response of biological and environmental catastrophe in the late Changhsingian in Shuicheng area,western Guizhou,China: evidence based on paleontology and geochemistry
DANG Zhiying1,2, SHEN Yulin1,2, YANG Tianyang1,2, JIN Jun1,2,3, ZHAO Yong4
1 School of Resources and Geosciences,China University of Mining and Technology,Jiangsu Xuzhou 221008,China; 2 Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process,Ministry of Education,Jiangsu Xuzhou 221008, China; 3 Guizhou Engineering Technology Research Center for Coalbed Methane and Shale Gas,Guiyang 550081,China; 4 Sinopec Xinjiang Xinchun Petroleum Development Co.,Ltd,Shandong Dongying 257000,China
Abstract The comprehensive application of microfossils and geochemistry plays an important role in the reconstruction of paleoenvironments. Abundant biological fossils,such as calcareous algae,foraminifers,brachiopods,gastropods,bivalves,crinoids,ostracods,and echinoids,were developed in the marine carbonates of the Late Permian Changhsingian in the Shuicheng area of western Guizhou,and calcareous algae and foraminifers are the most abundant species. In this paper,the distribution characteristics of fossils,whole-rock trace elements(Rb,Cu,Sr/Ba,V/(V+Ni),Ni/Co,V/Cr,Zr/Rb,(Zr+Rb)/Sr,and Rb/Sr)and trace element analysis of biogenic shells(Mg/Ca,Sr/Ca,B/Ca,Fe/Mn and 87Sr/86Sr)were studied. It was found that biological evolution was sensitive to paleoclimate variation. During the Hindeodus changxingensis-Clarkina zhejiangensis(ca. 251.9 Ma),there was a rapid variation in paleoclimate and marine organisms,and biotic groups declined sharply to disappear in a short time. Meanwhile,a series of variations occurred,including a dramatic increase in water salinity,sudden warming,and a shift from regression to a rapid transgression process. It was speculated that the interactions among salinity,temperature and rapid transgression-regression events led to climate change,which was the main reason for the extinction of marine life in the Late Permian.
Fund:National Natural Science Foundation of China(Nos. 42172186,41872168)and the National Key Research and Development of China(No.2021YFC2902002)
Corresponding Authors:
SHEN Yulin,born in 1981,professor, is mainly engaged in teaching and scientific research on sedimentology and coal, oil and gas geology. E-mail: yulinsh@163.com.
About author: DANG Zhiying,born in 1994,Ph.D.candidate, is currently engaged in sedimentology and paleobiostratigraphy. E-mail: zydanghpu@126.com.
Cite this article:
DANG Zhiying,SHEN Yulin,YANG Tianyang et al. Response of biological and environmental catastrophe in the late Changhsingian in Shuicheng area,western Guizhou,China: evidence based on paleontology and geochemistry[J]. JOPC, 2023, 25(6): 1421-1436.
DANG Zhiying,SHEN Yulin,YANG Tianyang et al. Response of biological and environmental catastrophe in the late Changhsingian in Shuicheng area,western Guizhou,China: evidence based on paleontology and geochemistry[J]. JOPC, 2023, 25(6): 1421-1436.
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