Arnold von Lasaulx
Encyclopedia
Arnold Constantin Peter Franz von Lasaulx (14 June 1839 – 25 January 1886) was a German
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...
mineralogist and petrographer
Petrography
Petrography is a branch of petrology that focuses on detailed descriptions of rocks. Someone who studies petrography is called a petrographer. The mineral content and the textural relationships within the rock are described in detail. Petrographic descriptions start with the field notes at the...
.
He was born at Kastellaun
Kastellaun
-Climate:Yearly precipitation in Kastellaun amounts to 755 mm, which falls into the middle third of the precipitation chart for all Germany. At 53% of the German Weather Service’s weather stations, lower figures recorded. The driest month is April. The most rainfall comes in June. In that...
near Coblenz, and educated at the University of Berlin
Humboldt University of Berlin
The Humboldt University of Berlin is Berlin's oldest university, founded in 1810 as the University of Berlin by the liberal Prussian educational reformer and linguist Wilhelm von Humboldt, whose university model has strongly influenced other European and Western universities...
, where he took his Ph. D. in 1868. In 1871 he became professor of mineralogy at Breslau, and in 1880 professor of mineralogy and geology
Geology
Geology is the science comprising the study of solid Earth, the rocks of which it is composed, and the processes by which it evolves. Geology gives insight into the history of the Earth, as it provides the primary evidence for plate tectonics, the evolutionary history of life, and past climates...
at Bonn
Bonn
Bonn is the 19th largest city in Germany. Located in the Cologne/Bonn Region, about 25 kilometres south of Cologne on the river Rhine in the State of North Rhine-Westphalia, it was the capital of West Germany from 1949 to 1990 and the official seat of government of united Germany from 1990 to 1999....
. He was distinguished for his researches on mineral
Mineral
A mineral is a naturally occurring solid chemical substance formed through biogeochemical processes, having characteristic chemical composition, highly ordered atomic structure, and specific physical properties. By comparison, a rock is an aggregate of minerals and/or mineraloids and does not...
s and on crystallography
Crystallography
Crystallography is the experimental science of the arrangement of atoms in solids. The word "crystallography" derives from the Greek words crystallon = cold drop / frozen drop, with its meaning extending to all solids with some degree of transparency, and grapho = write.Before the development of...
, and he was one of the earlier workers on microscopic petrography
Petrography
Petrography is a branch of petrology that focuses on detailed descriptions of rocks. Someone who studies petrography is called a petrographer. The mineral content and the textural relationships within the rock are described in detail. Petrographic descriptions start with the field notes at the...
. He described in 1878 the eruptive rocks of the district of Saar
Saarland
Saarland is one of the sixteen states of Germany. The capital is Saarbrücken. It has an area of 2570 km² and 1,045,000 inhabitants. In both area and population, it is the smallest state in Germany other than the city-states...
and Moselle
Moselle
Moselle is a department in the east of France named after the river Moselle.- History :Moselle is one of the original 83 departments created during the French Revolution on March 4, 1790...
. In 1880 he edited Der Aetna from the MSS. a Dr Wolfgang Sartorius von Waltershausen
Wolfgang Sartorius von Waltershausen
Wolfgang Sartorius Freiherr von Waltershausen was a German geologist.-Life and work:Waltershausen was born at Göttingen and educated at the university in that city. There he devoted his attention to physical and natural science, and in particular to mineralogy...
, the results of observation made between the years 1834-1869. He was author of Element der Petrographie (1875), Einführung in die Gesteinslehre (1885), and Precis de pitrographie (1887). He died at Bonn in January 1886.
Works
- Petrographische Studien an den vulkanischen Gesteinen der AuvergneAuvergne (province)Auvergne was a historic province in south central France. It was originally the feudal domain of the Counts of Auvergne. It is now the geographical and cultural area that corresponds to the former province....
(Stuttgart 1868–71); - Das Erdbeben von HerzogenrathHerzogenrathHerzogenrath is a municipality in the district of Aachen in the German state of North Rhine-Westphalia. It borders the Dutch town of Kerkrade, the national border in one section running along the middle of a main road.-History:...
vom 22. Okt. 1873 (Bonn 1874); - Das Erdbeben von Herzogenrath vom 24. Juni 1877 (Bonn 1878);
- Elemente der Petrographie(Bonn 1875);
- Über vulkanische Kraft (n. d. Engl. von Mallet, das. 1875);
- Aus Irland, Reiseskizzen und Studien (Bonn 1877);
- Sizilien. Ein geographisches Charakterbild (Bonn 1879);
- Der Ätna, nach Sartorius v. WaltershausenWolfgang Sartorius von WaltershausenWolfgang Sartorius Freiherr von Waltershausen was a German geologist.-Life and work:Waltershausen was born at Göttingen and educated at the university in that city. There he devoted his attention to physical and natural science, and in particular to mineralogy...
s nachgelassenen Manuskripten selbständig herausgegeben, bearbeitet und vollendet (Leipzig 1880); - Die Bausteine des Kölner Doms (Bonn 1882);
- Einführung in die Gesteinslehre (Berl. 1886);
- Irland und Sizilien (Berlin 1883)
- Wie das SiebengebirgeSiebengebirgeThe Siebengebirge is a German range of hills to the East of the Rhine, southeast of Bonn, consisting of more than 40 mountains and hills. It is located in the municipalities of Bad Honnef and Königswinter. It is of volcanic origin and came into being between 28 and 15 million years ago...
entstand (1884).