Hydrogeology of the Erunakovo region of the Kuznetsk Basin in the context of coal methane formation and mining
- RAS, Tomsk (Russian Federation)
Detailed study was given to the hydrogeology of the coal methane-promising Erunakovo region. We have established that all aquifers there are mutually related and form a single aquifer complex consisting of a series of microbeds of different water transmissivities and permeabilities. Two zones have been recognized in the Erunakovo region - of intense and slow water exchange (fresh- and brackish-water, respectively). Fresh waters with mineralization of up to 1 g/l and pH = 7 - 8 occur at depths down to about 300 m or, seldom, 500 m. Brackish waters have mineralization of 1 - 13 g/l and pH reaching 10.1. The higher mineralization is due to the higher contents of HCO{sub 3}{sup -} and Na and, sometimes, SO{sub 4}{sup 2-}, produced through sulfide oxidation, and Cl{sup -}, concentrated as a result of evaporation. In the study region, CO{sub 2} is not of mantle genesis but is the product of coal metamorphism.
- OSTI ID:
- 20781555
- Journal Information:
- Russian Geology and Geophysics, Vol. 47, Issue 7; ISSN 1068-7971
- Country of Publication:
- United States
- Language:
- English
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