Modes of arsenic occurrence in coal from the Santanghu Coalfield, Xinjiang, Northwest China: evidence from coal petrography, coal facies, mineralogy and geochemistry

2018 ◽  
Vol 18 (4) ◽  
pp. 294-302
Author(s):  
Shuo Feng ◽  
Jijun Tian ◽  
Yuyao Zhang ◽  
Feng Yang ◽  
Xingyu Lu
Keyword(s):  
Northwest China ◽  
Coal Facies ◽  
Coal Petrography

scholarly journals Construct a Paleo-Limnological Environment Based on Coal Petrography; Case Study, Two Selected Coal Seams, North Crowsnest Open-Pit Mine, Canada

2021 ◽  
Vol 54 (2D) ◽  
pp. 1-14
Author(s):  
Nader A.A. Edress
Keyword(s):  
Coal Seam ◽  
Vegetation Index ◽  
Vitrinite Reflectance ◽  
Open Pit ◽  
Petrographic Analysis ◽  
Coal Seams ◽  
Water Index ◽  
Average Value ◽  
Coal Facies ◽  
Coal Petrography

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 petrography to construct a Paleo-limnological setting. Twenty-two channel coal samples were assembled and measured from S-10 and S-C coal seams. Vitrinite reflectance measuring of the S-10 coal concern to low-volatile bituminous (1.61, on average). While the vitrinite reflectance measurements of S-C coal seam show an average value of 0.98 related to high-volatile bituminous. Petrographic analysis demonstrates that the S-10 coal seam appears to be rich in inertinite than the S-C coal seam that appears rich in vitrinite. Applying coal facies indices of Tissue Preservation Index, Gelification Index, Ground Water Index Vegetation Index and coal facies diagrams for the studied coal seams aid to suggest a condition of the depositional Paleo-environments. The results promote Paleo-depositional sites of telmatic to limno-telmatic setting of rheotropic systems swamp. The obtained results show a trend of increase in both herbaceous flora and anoxic waterlogged limo-telmatic setting toward the younger coal seam S-C than the older S-10 coal seam.

Moss coverage improves the microclimates of subalpine forests: implications of Qinghai spruce recruitment in Qilian Mountains, northwest China

2019 ◽  
Vol 51 (5) ◽  
Author(s):  
Qingtao Wang ◽  
Chuanyan Zhao ◽  
Yunpu Zheng ◽  
Muhammad Waseem Ashiq ◽  
Xiaoping Wang ◽  
...  
Keyword(s):  
Northwest China ◽  
Qilian Mountains ◽  
Subalpine Forests ◽  
Qinghai Spruce

PETROGRAPHIC, XRD, AND CLUMPED ISOTOPE STUDY OF A CRETACEOUS DOLOMITIC LAKE IN NORTHWEST CHINA

2017 ◽  
Author(s):  
Marina B. Suarez ◽  
◽  
G. Ludvigson ◽  
Luis A. Gonzalez ◽  
Hailu You
Keyword(s):  
Northwest China ◽  
Isotope Study ◽  
Clumped Isotope
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