Abstract
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.
Highlights
The coal has been a source of energy in Canada since the 18th century
Forty-four block polished samples are examined microscopically for the selected twenty-two coals of the S-10 and S-C coal seams
This increasing in the inertinite maceral in the S-10 coal samples may imply that the S-10 coal seam was subjected to the circumstance of one or more of a fusinite producer pathways during their biochemical stage of the coalification before its final buried
Summary
According to British Petroleum statistical review of world energy (2020), total proved coal reserves at Canada 6582 million tons, roughly 0.6% of the world total. This represents more energy than all the oil and gas in the country combined. Canada's coal resources occur in 16 sedimentary basins or groups of basins and range in age from Devonian to Tertiary. From which the Jurassic-Cretaceous Mist-Mountain Formation was chosen It is the main coal-bearing formation of economic interest in the western territory of Canada. It covers a considerable rank range from high-volatile bituminous to semi-anthracite.
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