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- Karl August Lossen (* 5. Januar 1841 in Kreuznach; † 24. Februar 1893 in Berlin) war ein deutscher Geologe. (de)
- Karl August Lossen (born Kreuznach (Rhineland), 5 January 1841; died Berlin, 24 February 1893) was a German petrologist and geologist. After finishing his studies at the gymnasium of Kreuznach in 1859 Lossen became a mining engineer; he began by two and a half years of practical work, then studied at the Universities of Berlin and Halle, where he graduated in 1866; in the same year he became assistant geologist of the Prussian national geological survey. He began immediately his well-known petrolographic studies of the Harz Mountains, which lasted till his death. In 1870 he became instructor in petrology at the Berlin mining academy, and at the same time lecturer at the university. In 1873, he was made a member of the newly founded Prussian National Geological Institute, and in 1882 received the title of professor; he was a fellow of the Görres Society from its foundation. In 1886, he became an associate professor in the university. He published the results of his investigation in over one hundred treatises and notices which appeared for the most part in the Zeitschrift der deutschen geologischen Gesellschaft of 1867–1891. The work of his youth, De Tauni montis parte transrhenana (Halle, 1867), appeared independently; then in 1877 followed the maps of the geological survey of the Harz Mountains and later many special maps of the Harz district, and the exhaustive work, Boden der Stadt Berlin (The Terrain of Berlin). He also wrote papers on the contact and "dynamometamorphosis" of minerals. He was considered as an authority on this subject, such that the committee in charge of the programme for the International Geological Congress in London requested him to present a paper on the origin of crystallized slate (printed in 1888). He was made a member of Belgian, French, and English learned societies. A mineral called lossenite is named after him; it is a hydrated lead-iron sulpharsenate from the mines of Laurion in Attica. (en)
- Karl August Lossen, född 5 januari 1841 i Kreuznach, död 24 februari 1893 i Berlin, var en tysk geolog. Lossen blev efter studier inom bergfacket och vid universiteten i Berlin och Halle an der Saale 1866 biträdande geolog och 1873 statsgeolog vid Preussens geologiska undersökning i Berlin samt verkade i denna ställning till sin död. Sedan 1886 var han tillika e.o. professor vid Berlins universitet. Han utövade en mångsidig verksamhet inom flertalet av geologins områden. Framförallt är han dock känd för sina ingående undersökningar av Taunus och Harz. Under dessa arbeten kom han redan på 1860-talet till det resultatet, att en stor del av de kristalliniska skiffrarna uppkommit ur normala sediment och eruptiva bergarter genom en omkristallisation på våta vägen i samband med bergskedjebildande mekaniska processer. Han hade därigenom en banbrytande betydelse för uppfattningen om de kristalliniska skiffrarnas uppkomst genom dynamometamorfos eller regionalmetamorfos. I samband därmed utförde han även betydelsefulla undersökningar över eruptiva bergarters inverkan på omgivande äldre bergarter. Lossen publicerade ett stort antal avhandlingar och geologiska kartor, bland vilka kan nämnas Geognostische Beschreibung der linksrheinischen Fortsetzung des Taunus (1867) samt hans kartor över Harz med beskrivningar. (sv)
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- Karl August Lossen (* 5. Januar 1841 in Kreuznach; † 24. Februar 1893 in Berlin) war ein deutscher Geologe. (de)
- Karl August Lossen (born Kreuznach (Rhineland), 5 January 1841; died Berlin, 24 February 1893) was a German petrologist and geologist. After finishing his studies at the gymnasium of Kreuznach in 1859 Lossen became a mining engineer; he began by two and a half years of practical work, then studied at the Universities of Berlin and Halle, where he graduated in 1866; in the same year he became assistant geologist of the Prussian national geological survey. He began immediately his well-known petrolographic studies of the Harz Mountains, which lasted till his death. In 1870 he became instructor in petrology at the Berlin mining academy, and at the same time lecturer at the university. In 1873, he was made a member of the newly founded Prussian National Geological Institute, and in 1882 receiv (en)
- Karl August Lossen, född 5 januari 1841 i Kreuznach, död 24 februari 1893 i Berlin, var en tysk geolog. Lossen blev efter studier inom bergfacket och vid universiteten i Berlin och Halle an der Saale 1866 biträdande geolog och 1873 statsgeolog vid Preussens geologiska undersökning i Berlin samt verkade i denna ställning till sin död. Sedan 1886 var han tillika e.o. professor vid Berlins universitet. (sv)
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- Karl August Lossen (de)
- Karl August Lossen (en)
- Karl August Lossen (sv)
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