Results 31 to 40 of about 344 (181)
Geochemical characteristics and paleoenvironmental significance of the Xishanyao Formation coal in the eastern Junggar Basin [PDF]
Meitan kexue jishuThe Junggar Basin is an important coal-bearing basin in northwestern China. The coalfield in the east of the Junggar basin is an important part of the large Xinjiang coal base, and contains rich coal resources.
Xiaotao XU +6 more
doaj +2 more sources
Meitian dizhi yu kantanBackgroundVertical shafts are typically employed in the deep mining areas of Jurassic coalfields in western China. However, the direct exposure of extremely thick Cretaceous aquifers frequently leads to significant water inflow in shafts.
Chunhu ZHAO +10 more
doaj +2 more sources
REE characteristics of the coal in the Erlian Basin, Inner Mongolia, China, and its economic value
China Geology, 2021 The rare earth elements (REE) content of the coal in the Erlian Basin was determined by inductively coupled plasma mass spectrometry (ICP-MS), and it turns out that the REE content from different geological age shows a significant difference: The REE ...
Shao-qing Huang +4 more
doaj +1 more source
Shallow coal seam group in Jurassic Coalfield.
, 2021 Shallow coal seam group in Jurassic Coalfield.
Qingxiang Huang (11268767) +1 more
core +1 more source
Engineering statistics of shallow coal seam group mining in Jurassic Coalfield.
, 2021 Engineering statistics of shallow coal seam group mining in Jurassic Coalfield.
Qingxiang Huang (11268767) +1 more
core +1 more source
Iraqi Geological Journal, 2021 The Crowsnest coalfield is a separated structural coalfield at the East Kootenay basin within southeast British Columbia. Selected Jurassic-Cretaceous two coals seam S-10 and S-C of the Mist-Mountain formation were investigated from the points of coal ...
Nader A.A. Edress
doaj +1 more source
Evaluation of carbonification of coals using a portable Raman spectrometer
Journal of Raman Spectroscopy, Volume 54, Issue 11, Page 1220-1232, November 2023., 2023 This study illustrates that it is possible to discriminate among the coals of different degrees of maturation of the carbonaceous matter and other types of carbonaceous matter using the data acquired with a portable Raman spectrometer using spectroscopic parameters: D and G band widths and wavenumber positions.
Adam Culka +2 more
wiley +1 more source
Geological Journal, Volume 58, Issue 10, Page 3948-3963, October 2023., 2023 The Pliensbachian Stage mainly developed as a fluvial‐lacustrine depositional system and an evolution history from braided fluvial to meandering fluvial, then to lacustrine, and finally back to meandering fluvial was reconstructed. We suggest that climate change is the major controlling factor for depositional evolution during the Pliensbachian.
Kai Zhou +6 more
wiley +1 more source
Energy Science &Engineering, Volume 11, Issue 7, Page 2238-2252, July 2023., 2023 A study on the stability of weakly cemented layered floor. Abstract Given the deformation and instability of the layered floor of weakly cemented soft rock roadway, taking the mining roadway of Meihuajing Mine as the engineering background, the deformation and instability mechanism of the floor and the control measures of the surrounding rock under ...
Ye Zhu +4 more
wiley +1 more source
Palaeoclimatic influence on lake palaeoenvironment and organic matter accumulation in the Middle Jurassic Shimengou formation (Qaidam basin, NW China) [PDF]
, 2023 The formation and accumulation of lacustrine organic-rich shales are strongly related to palaeoclimate and palaeoenvironmental conditions. Middle Jurassic organic-rich lacustrine shales in the Qaidam Basin, NW China, are important source rocks for ...
Yang, Minfang +10 more
core +1 more source