| Achille Ernest Oscar Joseph Delesse |
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Information AboutAchille Ernest Oscar Joseph Delesse |
| CATEGORIES ABOUT ACHILLE ERNEST OSCAR JOSEPH DELESSE | |
| french geologists | |
| french mineralogists | |
| 1817 births | |
| 1881 deaths | |
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He was born at Metz . At the age of twenty he entered the Ecole Polytechnique , and subsequently passed through the Ecole Des Mines . In 1845 he was appointed to the chair of Mineralogy and Geology at Besançon ; in 1850 to the chair of geology at the Sorbonne in Paris ; and in 1864 professor of Agriculture at the Ecole des Mines. In 1878 he became inspector-general of mines. In early years as ''ingénieur des mines'' he investigated and described various new Mineral s; he proceeded afterward to the study of Rock s, devising new methods for their determination, and giving particular descriptions of Melaphyre , Arkose , Porphyry , Syenite , and others. The Igneous Rock s of the Vosges , and those of the Alps , Corsica , etc., and the subject of Metamorphism occupied his attention. He also prepared in 1858 geological and hydrological maps of Paris, with reference to the underground water, similar maps of the '' Département s'' of the Seine and Seine-et-Marne , and an agronomic map of the Seine-et-Marne ( 1880 ), in which he showed the relation that exists between the physical and chemical characters of the Soil and the geological structure. His annual ''Revue des progrès de géologie'', undertaken with the assistance ( 1860 - 1865 ) of Auguste Laugel and afterwards (1865- 1878 ) of Albert De Lapparent , was carried on from 1860 to 1880. His observations on the Lithology of the deposits accumulated beneath the sea were of special interest and importance. His separate publications were: ''Recherches sur l'origine des roches'' (Paris, 1865); ''Étude sur le métamorphisme des roches'' (1869), ''Lithologie des mers de France et des mers principales du globe'' (2 vols. and atlas, 1871). He died at Paris on 24 March 1881 . REFERENCES |
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