Izvestiya of Saratov University.
ISSN 1819-7663 (Print)
ISSN 2542-1921 (Online)

lithogenic and petrogenic quartz

Typomorphism of Clastogene Quartz from the «Melovatka-5» and «Melovatka-6» Sections (the Cenomanian from the Southeast of the Russian Plate)

The paper deals withthe methods forstudying typomorphic featuresof clastogene quartz grains from the Melovatka suite terrigenou srocks within the stratotype and parastratotype sections. Calculated and observable typomorphic features of quartz grains have been examined; statistic analyses of their sphericity and isometricity parameter values have been made. Criteria for determining petrogenic or lithogenic nature of clastogene quartz have been specified.