气候变化领域集成服务门户(CCPortal): Sequence stratigraphy and coal accumulation of lower cretaceous coal-bearing series in Erlian Basin; Northeastern China

CCPortal

DOI	10.1306/11211817175
	Sequence stratigraphy and coal accumulation of lower cretaceous coal-bearing series in Erlian Basin; Northeastern China
	Wang S.; Shao L.; Wang D.; Sun Q.; Sun B.; Lu J.
发表日期	2019
ISSN	0149-1423
起始页码	1653
结束页码	1690
卷号	103 期号:7
英文摘要	The detailed depositional systems and basin evolution of Lower Cretaceous coal-bearing strata in the Erlian Basin of Northeastern China were analyzed based on extensive borehole and outcrop data. A total of 7 facies associations are interpreted and consist of 14 distinct lithofacies, with lithologies including conglomerates, sandstones, siltstones, mudstones, shales, and coals. Five third-order sequences were recognized, and their internal lowstand, transgressive, and highstand systems tracts were defined based on six key sequence stratigraphic boundaries. These boundaries were represented by regional unconformities, basal erosional surfaces of incised valley fills, interfluvial paleosols, and abrupt depositional facies-reversal surfaces. Sequences I–V correspond to the rift-initiation stage, the early-rift climax stage, the late-rift climax stage, the immediate postrift stage, and the late postrift stage of the basin, respectively. The preferred sites for coal accumulation were braided fluvial delta plain, meandering fluvial delta plain, and littoral–shallow lake environments. The major coal seams formed during the early and late transgressive systems tract of sequences III, IV, and V, which were well developed in the Eastern, Northeastern, and Northeastern parts of the Erlian Basin, respectively. Three coal depositional models were summarized in the sequence stratigraphic framework, including types 1, 2, and 3, corresponding to the Newark type, Newark–Richmond type, and Richmond type, respectively. These coal depositional models were closely related to the basin evolution. These results could provide preferred depositional environments and favorable areas of coal and coalbed methane (CBM) for the exploration and development of coal and CBM in the Erlian Basin, with the Jiergalangtu, Huolinhe, Baiyinhua, and A’nan sags recommended as the key sags. © 2019 The American Association of Petroleum Geologists. All rights reserved.
语种	英语
scopus关键词	Coal deposits; Deposition; Methane; Stratigraphy; Coal-bearing stratum; Depositional environment; Exploration and development; Highstand systems tract; Sequence stratigraphic framework; Sequence stratigraphy; Third-order sequences; Transgressive systems tracts; Coal; basin evolution; borehole; coal; coalbed methane; Cretaceous; deposition; exploration; facies; incised valley; outcrop; sequence stratigraphy; stratigraphic boundary; China; Erlian Basin; Nei Monggol
来源期刊	AAPG Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/143785
作者单位	State Key Laboratory of Coal Resources and Safe Mining, College of Geoscience and Surveying Engineering, China University of Mining and Technology Beijing (CUMTB), China; Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Mineral, Shandong University of Science and Technology, Qingdao, Shandong, China; State Key Laboratory of Coal Resources and Safe Mining, College of Geoscience and Surveying Engineering, CUMTB, Beijing, China; Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Mineral, Shandong University of Science and Technology, Qingdao, Shandong, China; Langfang Branch of Research Institute of Petroleum Exploration and Development, PetroChina, Langfang, China; Langfang Branch of Research Institute of Petroleum Exploration and Development, PetroChina, Langfang, China; State Key Laboratory of Coal Resources and Safe Mining, College of Geoscience and Surveying Engineering, CUMTB, Beijing, China
推荐引用方式 GB/T 7714	Wang S.,Shao L.,Wang D.,et al. Sequence stratigraphy and coal accumulation of lower cretaceous coal-bearing series in Erlian Basin; Northeastern China[J],2019,103(7).
APA	Wang S.,Shao L.,Wang D.,Sun Q.,Sun B.,&Lu J..(2019).Sequence stratigraphy and coal accumulation of lower cretaceous coal-bearing series in Erlian Basin; Northeastern China.AAPG Bulletin,103(7).
MLA	Wang S.,et al."Sequence stratigraphy and coal accumulation of lower cretaceous coal-bearing series in Erlian Basin; Northeastern China".AAPG Bulletin 103.7(2019).