Leonid PUSTOVALOV, USSR Petrographer. Professor, Moscow Petroleum Institute, since 1934; corresponding member, USSR Academy of Science, since 1953; Department Chairman, Council for the Study of Production Resources, USSR Academy of Science, since 1953. Stalin Prize, 1941. Member, Communist Party, since 1944.
Specialist in petrography and geochemistry of sedimentary rocks. Founded hypothesis of the differentiation of matter in the zone of sedimentary accumulation and hypothesis of periodicity in the formation of sedimentary rocks and minerals of sedimentary origin. 1933 worked on problem of geochemical facies.
1943-1955 Head,Department of Petrography of Sedimentary Rocks, Institute of Geology Science, USSR Academy of Science.