Title: Litologo-geokhimicheskie zakonomernosti osadkoobrazovanii͡a︡ v ordovike i silure Sibirskoĭ platformy
Subjects: Petrology, Sedimentary Rocks, Stratigraphic Geology, Sedimentary rocks
Places: Russia (Federation), Siberia
Time periods: Ordovician, Silurian