coal mine methane and coalbed methane development in the ...

Coal Mine Methane And Coalbed Methane
Development In The Donetsk Region, Ukraine
northwestern continuation of the SE-trending South Syncline with the SW-trending
Voltchansk synform. The eastern margin of the Kalmius–Torets Depression is located near
Donetsk and Makeevka.
A significant tectonic element of intrabasional architecture is WNW-ESE trending principal
displacement zone (PDZ) consisting of a set of dextrally en echelon arranged deep
basement faults with faults superimposed on depressions (pull-apart basins) in the
basement. During the post-rift stage, strike-slip pulses within PDZs affected local
depositional environments in the vicinity of the pull-apart basins and influenced on
depositional trends across the entire basin. Major post-rift subsidence occurred during the
Carboniferous.
In contrast with adjacent rift sectors, the Donetsk Basin had extensive coal-forming
environments during the interval between 290-340 Ma, periodically triggered by the interplay
of PDZ strike-slip motions and variable rotations of the Donbass megablock. This caused
recurrence from swampy coastal-marine plains with huge peatbogs to shallow sea
environments and resulted in accumulation of thick (up to 14 km), paralic coal-bearing
Carboniferous (post- Early Visean) formations containing more than 300 coal seams and
layers.
Geologic Assessment and CMM/CBM Resource Base Analysis 1-8