The genetic environmental transformation mechanism of coal and oil shale deposits in eastern China’s continental fault basins and the developmental characteristics of the area’s symbiotic assemblages—taking Huangxian Basin as an example

Abstract Coal and oil shale are two common sedimentary energy sources which are often symbiotically developed in Mesozoic–Cenozoic continental fault basins. However, the mechanisms and characteristics of the symbiotic development are not yet clearly known. In this research study, the typical contine...

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Autores principales:	Dong-Dong Wang, Zeng-Xue Li, Hai-Yan Liu, Da-Wei Lyu, Guo-Qi Dong
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2019
Materias:	Coal and oil shale symbiotic assemblages Genetic environments Conversion mechanism Sequence stratigraphic framework Occurrence characteristics Continental fault basin Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/e63a599673fb4ff29ff618984355ed39
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spelling	oai:doaj.org-article:e63a599673fb4ff29ff618984355ed392021-12-02T10:13:13ZThe genetic environmental transformation mechanism of coal and oil shale deposits in eastern China’s continental fault basins and the developmental characteristics of the area’s symbiotic assemblages—taking Huangxian Basin as an example10.1007/s12182-019-0308-81672-51071995-8226https://doaj.org/article/e63a599673fb4ff29ff618984355ed392019-04-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-019-0308-8https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Coal and oil shale are two common sedimentary energy sources which are often symbiotically developed in Mesozoic–Cenozoic continental fault basins. However, the mechanisms and characteristics of the symbiotic development are not yet clearly known. In this research study, the typical continental fault basins of eastern China were chosen as examples for the purpose of conducting an examination of the coal and oil shale symbiotic assemblage types, genetic environmental differences, and transformation mechanisms, as well as the development and occurrence characteristics of different assemblage types. Through a large number of investigations, systematic experimental testing, and sequence stratigraphy studies, the following conclusions were obtained: (1) There were five types of coal and oil shale symbiotic assemblages observed in the continental fault basins, (2) The development of coal and oil shale deposits requires a warm and humid climate, stable structure, abundant organic matter supply, a certain water depth, and a lower terrestrial source debris supply. The observed differences were that the water depth conditions were diversified in the study area, as well as the sources, types, and content of the organic matter. (3) The rapid transformations of the coal and oil shale genetic environments were mainly controlled by the tectonic settings and climatic conditions, which were determined to control the changes in the water depths, salinity, redox conditions, and lake productivity of the genetic environments. Also, in the symbiotic assemblages, genetic environment changes had induced the development of oil shale deposits, which gradually evolved into coal genetic environments. (4) In the isochronous sequence stratigraphic framework of the coal and oil shale symbiotic assemblages, the lake expansion system tracts (EST) were determined to be the most beneficial to the growth of all the types of assemblages and were characterized by more assemblage development phases and smaller bed thicknesses. From the early to the late stages of the EST, and from the lakesides to lake centers, the thicknesses of the coal seams in the symbiotic assemblages showed trends of thinning, while the thicknesses of the oil shale deposits exhibited increasing trends. The early stages of high stand system tracts were found to be beneficial to the development of the symbiotic assemblages of coal seams overlying the oil shale. This tract type generally presented large bed thicknesses and distribution ranges. The low stand system tract and the late high stand system tract were determined to be unconducive to the development of the symbiotic assemblages.Dong-Dong WangZeng-Xue LiHai-Yan LiuDa-Wei LyuGuo-Qi DongKeAi Communications Co., Ltd.articleCoal and oil shale symbiotic assemblagesGenetic environmentsConversion mechanismSequence stratigraphic frameworkOccurrence characteristicsContinental fault basinScienceQPetrologyQE420-499ENPetroleum Science, Vol 16, Iss 3, Pp 469-491 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Coal and oil shale symbiotic assemblages Genetic environments Conversion mechanism Sequence stratigraphic framework Occurrence characteristics Continental fault basin Science Q Petrology QE420-499
spellingShingle	Coal and oil shale symbiotic assemblages Genetic environments Conversion mechanism Sequence stratigraphic framework Occurrence characteristics Continental fault basin Science Q Petrology QE420-499 Dong-Dong Wang Zeng-Xue Li Hai-Yan Liu Da-Wei Lyu Guo-Qi Dong The genetic environmental transformation mechanism of coal and oil shale deposits in eastern China’s continental fault basins and the developmental characteristics of the area’s symbiotic assemblages—taking Huangxian Basin as an example
description	Abstract Coal and oil shale are two common sedimentary energy sources which are often symbiotically developed in Mesozoic–Cenozoic continental fault basins. However, the mechanisms and characteristics of the symbiotic development are not yet clearly known. In this research study, the typical continental fault basins of eastern China were chosen as examples for the purpose of conducting an examination of the coal and oil shale symbiotic assemblage types, genetic environmental differences, and transformation mechanisms, as well as the development and occurrence characteristics of different assemblage types. Through a large number of investigations, systematic experimental testing, and sequence stratigraphy studies, the following conclusions were obtained: (1) There were five types of coal and oil shale symbiotic assemblages observed in the continental fault basins, (2) The development of coal and oil shale deposits requires a warm and humid climate, stable structure, abundant organic matter supply, a certain water depth, and a lower terrestrial source debris supply. The observed differences were that the water depth conditions were diversified in the study area, as well as the sources, types, and content of the organic matter. (3) The rapid transformations of the coal and oil shale genetic environments were mainly controlled by the tectonic settings and climatic conditions, which were determined to control the changes in the water depths, salinity, redox conditions, and lake productivity of the genetic environments. Also, in the symbiotic assemblages, genetic environment changes had induced the development of oil shale deposits, which gradually evolved into coal genetic environments. (4) In the isochronous sequence stratigraphic framework of the coal and oil shale symbiotic assemblages, the lake expansion system tracts (EST) were determined to be the most beneficial to the growth of all the types of assemblages and were characterized by more assemblage development phases and smaller bed thicknesses. From the early to the late stages of the EST, and from the lakesides to lake centers, the thicknesses of the coal seams in the symbiotic assemblages showed trends of thinning, while the thicknesses of the oil shale deposits exhibited increasing trends. The early stages of high stand system tracts were found to be beneficial to the development of the symbiotic assemblages of coal seams overlying the oil shale. This tract type generally presented large bed thicknesses and distribution ranges. The low stand system tract and the late high stand system tract were determined to be unconducive to the development of the symbiotic assemblages.
format	article
author	Dong-Dong Wang Zeng-Xue Li Hai-Yan Liu Da-Wei Lyu Guo-Qi Dong
author_facet	Dong-Dong Wang Zeng-Xue Li Hai-Yan Liu Da-Wei Lyu Guo-Qi Dong
author_sort	Dong-Dong Wang
title	The genetic environmental transformation mechanism of coal and oil shale deposits in eastern China’s continental fault basins and the developmental characteristics of the area’s symbiotic assemblages—taking Huangxian Basin as an example
title_short	The genetic environmental transformation mechanism of coal and oil shale deposits in eastern China’s continental fault basins and the developmental characteristics of the area’s symbiotic assemblages—taking Huangxian Basin as an example
title_full	The genetic environmental transformation mechanism of coal and oil shale deposits in eastern China’s continental fault basins and the developmental characteristics of the area’s symbiotic assemblages—taking Huangxian Basin as an example
title_fullStr	The genetic environmental transformation mechanism of coal and oil shale deposits in eastern China’s continental fault basins and the developmental characteristics of the area’s symbiotic assemblages—taking Huangxian Basin as an example
title_full_unstemmed	The genetic environmental transformation mechanism of coal and oil shale deposits in eastern China’s continental fault basins and the developmental characteristics of the area’s symbiotic assemblages—taking Huangxian Basin as an example
title_sort	genetic environmental transformation mechanism of coal and oil shale deposits in eastern china’s continental fault basins and the developmental characteristics of the area’s symbiotic assemblages—taking huangxian basin as an example
publisher	KeAi Communications Co., Ltd.
publishDate	2019
url	https://doaj.org/article/e63a599673fb4ff29ff618984355ed39
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The genetic environmental transformation mechanism of coal and oil shale deposits in eastern China’s continental fault basins and the developmental characteristics of the area’s symbiotic assemblages—taking Huangxian Basin as an example

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