RUSSIAN JOURNAL OF EARTH SCIENCES, VOL. 20, ES2003, doi:10.2205/2020ES000698, 2020 ![]() Figure 2. A) Chemical classification of the Lower Gondwana Group sandstones (after Herron [1986]), B) analysis of the rocks of the study area according to the richness of quartz (after Crook [1974]). Copyright 2020 by the Geophysical Center RAS. Generated from LaTeX source by ELXfinal, v.2.0 software package. |