Journal of Palaeogeography, 2016 Based on an extensive borehole survey of the Middle Jurassic coal-bearing sequences in the Saishiteng coalfield, northern Qaidam Basin (NQB), a total of 20 rock types and 5 sedimentary facies were identified, including braided river, meandering river ...
Meng Li +6 more
exaly +5 more sources
Early and middle Jurassic sequence stratigraphic division of M coalfield in Xinjiang [PDF]
E3S Web of Conferences, 2022 The coal accumulation in the M coalfield occurred in the Early-Middle Jurassic. There are three main coal-bearing strata in the M coalfield, the Early Jurassic Talicike Formation, the Yangxia Formation and the Middle Jurassic Kizilenur Formation.
Yao Qiuhui, Cui Kai
doaj +4 more sources
Sedimentary Environments and Coal Accumulation of the Middle Xishanyao Formation, Jurassic, in the Western Dananhu Coalfield, Turpan-Hami Basin [PDF]
Geofluids, 2021 The Dananhu coalfield, at the southern margin of Turpan-Hami Basin, Xinjiang, has good coal-forming geological conditions. Due to the low research level on the depositional environment and coal accumulation, the comprehensive coal mining is restricted ...
Zhiming Yan, Jinlong Wang, Xuetian Wang
doaj +5 more sources
Middle Jurassic sequence stratigraphic characteristics in Longdong coalfield [PDF]
E3S Web of Conferences, 2019 Stratigraphic sequence contrast and sequence stratigraphic framework are of great significance for the sedimentary phase and sedimentary systems of coal-accumulating basin.
Xu Tai +4 more
doaj +3 more sources
Mineralogical Characteristics of No. 3 Coal in the Jurassic Coalfield of Northern Shaanxi [PDF]
E3S Web of ConferencesThis study investigates the mineralogical characteristics of No. 3 coal seam in the Mahuangliang Coal Mine, located within the Jurassic coalfield of northern Shaanxi Province, China.
Yan Xiaoyun +6 more
doaj +3 more sources
Geological Controls on Mineralogy and Geochemistry of the Permian and Jurassic Coals in the Shanbei Coalfield, Shaanxi Province, North China [PDF]
Minerals (Basel, Switzerland), 2020 Coal as the source of critical elements has attracted much attention and the enrichment mechanisms are of significant importance. This paper has an opportunity to investigate the mineralogical and geochemical characteristics of the Permian and Jurassic bituminous coals and associated non-coals from two underground coal mines in the Shanbei Coalfield ...
Yunfei Shangguan +2 more
exaly +4 more sources
GeofluidsThe frequent occurrence of water inrush disasters from the fissured aquifer of the Lower Cretaceous Luohe Formation sandstone in the Jurassic coalfield of Huanglong, due to mining-induced disturbances in the roof, poses a significant threat to the safe ...
Yanbo Hu +3 more
doaj +3 more sources
Study on gas content variation and main controlling of low-rank coal in Huanglong Jurassic coalfield
Energy Exploration and Exploitation, 2023 In order to study the controlled factors and variation of gas content in deep low-rank coal reservoirs, taking No.4 coal of Jurassic Yan’an Formation in Huanglong coalfield as an example, collects the production data and prepares the coal samples ...
Yusong Ji, Dongmin Ma, Yue Chen
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Pore Fractal Characteristics of Different Macro-Coal Components and Influence on Adsorption/Desorption: A Case Study in the Huanglong Jurassic Coalfield. [PDF]
ACS Omega, 2022 The heterogeneity of pore structure in coal reservoir is extremely complex. In this paper, mercury intrusion porosimetry (MIP) and liquid nitrogen adsorption (LNA) were used to describe pore characteristics of macro-coal components, and the fractal characteristics of pores and their relationship with adsorption and desorption were discussed.
Ma Z +8 more
europepmc +3 more sources
Maceral, Mineralogical and Geochemical Characteristics of the Jurassic Coals in Ningdong Coalfield, Ordos Basin [PDF]
Energy Exploration and Exploitation, 2014 17 samples, including 16 coal-seam samples and one parting, were collected from 4 mines in Ningdong Coalfield, west Ordos Basin, China. Maceral, mineralogy and geochemistry of them were studied by using of optical microscope, LTA-XRD (low temperature ashing-X-ray diffraction), XRF (X-ray fluorescence), and ICP-MS (Inductively ...
Cunliang Zhao +2 more
exaly +2 more sources