Research progress of palaeogeography and palaeoenvironmental evolution of coal-bearing series in China
Shao Long-Yi1, Xu Xiao-Tao1, Wang Shuai1, Wang Dong-Dong2, Gao Di3, Wang Xue-Tian1, Lu Jing1
1 College of Geoscience and Surveying Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China; 2 College of Earth Science and Engineering,Shandong University of Science and Technology, Shandong Qingdao 266590,China; 3 College of Resources and Environment,Henan Polytechnic University,Henan Jiaozuo 454003,China
Abstract The sedimentology of coal-bearing series have experienced the development from the initial “cyclothem” theory to the sedimentary model,and to the present sequence stratigraphic theory. The Chinese scholars have made a great progress in coal sedimentology. (1)The accumulation model of thick coal seams in a sequence stratigraphic framework has been put forward which mainly considers the balance between the peat accumulation rate and the growth rate of accommodation space. The sequence stratigraphy provides the isochronous stratigraphic units,which is widely used to reconstruct high-resolution isochronous lithofacies palaeogeography of the six major coal-accumulating areas in China. It provides the guidance for predicting the coal accumulation center and coal rich zone during different coal-accumulating periods. With the further study of the sequence stratigraphy theory,new progresses have been made in the development characteristics,research methods and division of coal facies and sedimentary organic facies. (2)In recent years,the associated mineral resources in coal-bearing series have become one of the hot issues in the coal geology. Coalbed methane,shale gas,natural gas hydrate,uranium,“three rare mineral diposits including rare earth,rare metal and rare-scattered elements mineral resources”,graphite and other mineral resources that have very important economic values in coal basins have attracted more attention. The potential value of some of these mineral resources even exceeds that of the coal itself. Palaeogeography,as a prerequisite,is closely related to the associated mineral resources in coal-bearing series,which is of great help to the research and exploration of these mineral resources. (3)Coal,as a product of peatland and an important sedimentary information carrier,has been used in the study of “deep time”paleoclimates. The Milankovitch theory is used as the time measurement tools to estimate the carbon accumulation rate,the net primary productivity and the variation trend of the atmospheric CO2 based on analyzing the carbon accumulation rate of coal. With the deep understanding on the origin of inertinite in coals,more and more attention has been paid to the paleo-wildfire information contained in the coal. Based on the content of the inertinite in coal,the estimation of wildfire events in peatland and paleo-atmospheric oxygen level has become a new research direction of palaeo-environment. Future studies of coal accumulation models and palaeogeography in China will focus on the sequence stratigraphic model of coal-bearing basins in different tectonic settings,coal accumulation palaeogeography and laws during different coal accumulation periods,the palaeogeographic reconstruction of beneficial associated mineral resources in coal-bearing series,the “deep time”palaeoclimate information in coal-bearing series and quantitative study on palaeogeography of coal-bearing series by using the technology of big data.
Fund:Co-funded by the National Natural Science Foundation of China(No.41572090),Yue Qi Scholar Project of China University of Mining and Technology(Beijing)and Fundamental Research Funds for the Central University(No.2010YD09)
About author: Shao Long-Yi,born in 1964,is a professor and doctoral supervisor of College of Geoscience and Surveying Engineering,China University of Mining and Technology(Beijing),with main research interests in sedimentology,sequence stratigraphy and coal geology. E-mail: ShaoL@cumtb.edu.cn.
Cite this article:
Shao Long-Yi,Xu Xiao-Tao,Wang Shuai et al. Research progress of palaeogeography and palaeoenvironmental evolution of coal-bearing series in China[J]. JOPC, 2021, 23(1): 19-20.
Shao Long-Yi,Xu Xiao-Tao,Wang Shuai et al. Research progress of palaeogeography and palaeoenvironmental evolution of coal-bearing series in China[J]. JOPC, 2021, 23(1): 19-20.
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