LOAMY ROCKS AND ASSOCIATED MINERAL RESOURCES IN PALEOZOIC AND MESO-CENOZOIC DEPOSITS OF THE VORONEZH ANTECLISE. Paper 2. LOAMY ROCKS AND ASSOCIATED MINERAL RESOURCES IN THE MESOCENOZOIC
Distribution, geological setting, mineral composition, genesis of the different types loamy sediments of the Voronezh anteclise Meso-Cenozoic are envisaged. It is shown that loamy sediments of the different stratigraphie sequences differ notably after their mineral composition inasmuch these were accumulated in discrepant facies circumstances, including continental (mantles of waste, proluvium-diluvium, limnic-and-swampy conditions), transitional (humid and arid lagoons), marine (coastal, shallow-relative deep waters) ones. On a stage of diagenesis the primary mineral compositions may be superimposed and distorted with the different processes that lead to the conspicuous transformations of the primary precipitations in connection with conditions of sedimentation and burial. The clays are accompanied by different mineral commodities - refractory, fire-proof, fusible, keramzit (claydite), bentonite deposits. These are tied with the peculiarities of forming including facies control, diagenesis of sludge precipitations, composition of rocks in weathering areas, correlation between the loamy minerals, character of adulterants, evolution of the clays mineral compositions through the geological history of region. Characteristics of the loamy rocks type locations are envisaged as well as correlation of clays technological affinities and their mineral composition.