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DUROCHER, JOSEPH MARIE ELISABETH (181...

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Originally appearing in Volume V08, Page 711 of the 1911 Encyclopedia Britannica.
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DUROCHER, See also:JOSEPH See also:MARIE ELISABETH (1817-1858) , See also:French geologist, was See also:born at See also:Rennes on the 31st of May 1817. Educated at the Ecole Polytechnique and Ecole See also:des Mines in See also:Paris, he qualified as a See also:mining engineer. See also:Early in his career he travelled in the See also:northern parts of See also:Europe to study the metalliferous deposits, and he contributed the articles on See also:geology, See also:mineralogy, metallurgy and See also:chemistry to See also:Paul Gaimard's Voyages de la See also:Commission scientijiique du See also:nord, en Scandinavie, en Laponie, au Spitzberg et aux Fer6e, See also:pendant See also:les annees z838-r84o. In 1844 he became See also:professor of geology and mineralogy at Rennes. His See also:attention was now largely directed to the study of the artificial See also:production of minerals, to the See also:metamorphism of rocks, and to the See also:genesis of igneous rocks. In 1857 he published his famous Essai de petrologie comparee, in which he expressed the view that the igneous rocks have been derived from two magmas which coexist beneath the solid crust, and are respectively See also:acid and basic. He died at Rennes on the 3rd of See also:December 1858.

End of Article: DUROCHER, JOSEPH MARIE ELISABETH (1817-1858)

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