Termier, Pierre Marie (X 1878 ; 1859-1930).

Geologist, he has a passion for mathematics, literature and philosophy. Mining engineer in Nice (1883), he became a professor at the École des mines (School of Mines) de Saint-Étienne (1885). He studies the crystalline massif of Mont Pilat. Professor of mineralogy (1894), then of geology (1911) at the School of Mines of Paris, he succeeds Mr. Lévy as director of the Service of the geological map of France (1911). In 1909, he was elected to the Academy of Sciences, of which he then became president. Famous for his "geological synthesis of the Alps", he is the founder of tectonics and modern geodynamics. In collaboration with Marcel Bertrand and Wilfrid Kilian, he contributes to developing the theory of overlapping layers.