2018 International Conference on Civil and Hydraulic Engineering | |
Depositional environment and coal accumulation of the Lower Cretaceous Saihantala Formation in the Baiyinhua Sag of the Erlian Basin | |
土木建筑工程;水利工程 | |
Wang, Shuai^1 | |
College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing | |
100083, China^1 | |
关键词: Coal accumulation; Depositional environment; Early Cretaceous; Large-scale development; Lower Cretaceous; Sedimentary facies; Sequence stratigraphy; Transgressive systems tracts; | |
Others : https://iopscience.iop.org/article/10.1088/1755-1315/189/5/052024/pdf DOI : 10.1088/1755-1315/189/5/052024 |
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学科分类:土木及结构工程学 | |
来源: IOP | |
【 摘 要 】
The Erlian Basin is characterized by the Early Cretaceous thick coals and related coalbed methane resources. In this paper, we have analyzed lithofacies, sedimentary facies, sequence stratigraphy, and coal accumulation of the Lower Cretaceous in the Baiyinhua Sag of the Erlian Basin. The coal seams, which were developed from the littoral-shallow lacustrine and braided fluvial delta plain environments, were mainly formed in the late lowstand systems tract and late transgressive systems tract. The thickest coal was distributed in the central zone of the sag, which thinned out towards the northwest and the southeast. The thick coal seams were formed when fault basin was suitable for the large-scale development and preservation of peat in the stage of the basin contraction with uniform subsidence.
【 预 览 】
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Depositional environment and coal accumulation of the Lower Cretaceous Saihantala Formation in the Baiyinhua Sag of the Erlian Basin | 1548KB | download |