In coal basins and deposits with intensive manifestation of magmatism, along with distinct, but local contact changes near intrusions, there is an area and vertical zonality in the distribution of coals of different quality. ...
How to cite:
Gavrilova O.I., Gurevich A.B., Toporets S.A. Thermal metamorphism of coal-bearing strata // Journal of Mining Institute. 1975. Vol. 68. Iss. 2. p. 19-29.
