The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased. Cayeux, Lucien Born Mar. 26, 1864, in Semousies; died Nov. 1, 1944, in MauvessurLoire. French geologist and lithologist. Member of the French Academy of Sciences (1928). Cayeux became a professor at the École des Mines in Paris in 1907 ...