Check the listing for details. Russia Famous Geologist Obruchev stamp 1964 A-11. Listed at 4.99 USD. Good stamp. Vladimir Afanasyevich Obruchev (October 10 [O.S. September 28] 1863, Klepenino near Rzhev, Tver Oblast, Russian Empire – June 19, 1956, Moscow, USSR) was a Russian and Soviet geologist who specialized in the study of Siberia and Central Asia. He was also one of the first Russian science fiction authors. Having spent half a century in exploring Siberia and Inner Asia, Obruchev summarized his findings with a three-volume monograph, The Geology of Siberia (1935–1938), followed by The History of Geological Exploration of Siberia. Many of his works deal with the origins of loess in Central Asia and Siberia, ice formation and permafrost in Siberia, problems of Siberian tectonics, and Siberian goldfields. He also authored many popular scientific works, such as Formation of Mountains and Ore Deposits (1932), Fundamentals of Geology (1944), Field Geology (1927), Ore Deposits (1928–1929), and others.