Erich Haarmann

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Erich Otto Haarmann (born June 14, 1882 in Osnabrück , † April 17, 1945 in Bonn ) was a German geologist.

Haarmann came from a family of steel industrialists. His father was August Haarmann (1840–1913), director of the Georgsmarienhütte steelworks . At first he should also go into the coal and steel industry and become a mining engineer. Haarmann studied in Berlin and Munich, in addition to mining, also intensively geology. In 1905 he became a mountain trainee and in 1908 he received his doctorate under Hans Stille ( The geological conditions of the Piesberg near Osnabrück and its surroundings ). He worked briefly from 1909 to 1911 at the Prussian Geological State Institute (PGLA) and spent two years with a drilling company in Mexico. He then worked as a freelancer and completed his habilitation in Berlin in 1915. From 1918 he had a teaching position for economic geology at the Humboldt University in Berlin , where he became an associate professor in 1922. He stayed there for the rest of his career. He developed an extensive professional activity and was financially independent from the start. He had been a member of the German Geological Society since 1904. In 1932 he was elected a member of the Leopoldina .

Haarmann also dealt with the history of geology, collected geologist letters and planned a geologist archive . Most of the collection of over 25,000 documents he had planned for this purpose fell victim to a bomb attack on Haarmann's Berlin apartment in March 1943. The geological archive (of the Geological Association) in Freiburg was set up by Max Pfannenstiel from 1956 .

In 1916 he published his oscillation theory to explain tectonic processes such as mountain formation, one of the many explanatory models in tectonics developed before the establishment of plate tectonics. Then there are large upward and downward movements, swellings (geotumor) and subsidence (geodepression) in the crystalline earth's crust. In the case of swelling, the sedimentary surface tears and fractures are formed; when swellings slide off, mountain formation (in a secondary tectogenesis) occurs either on one side or on both sides when both sides slide into a trough. He imagined the cause to be cosmically triggered magment displacement below the crust and saw similar processes on the moon. Related to this theory is Hans Stille's undation theory from the 1930s. Stille and his student Haarmann were later scientific opponents.

Fonts

  • Via double lines of praise at Ceratiten. In: Journal of the German Geological Society for 1910, 62, 1910, pp. 97-100
  • About the geological worldview, Malleo et Mente, Enke Verlag 1935
  • The oscillation theory. An explanation of the crustal movements of the earth and moon, Enke Verlag 1930

literature

  • Ilse Seibold : The geologist archive in Freiburg / Breisgau . In: Reports of the Federal Geological Institute, Volume 41, 1997, pp. 195–199

Individual evidence

  1. ^ Barbara Gerstein:  Haarmann, Hermann August. In: New German Biography (NDB). Volume 7, Duncker & Humblot, Berlin 1966, ISBN 3-428-00188-5 , p. 371 f. ( Digitized version ).
  2. ↑ PGLA list of geologists with photo
  3. ^ Membership directory of the German Geological Society March 1921
  4. ↑ Member entry of Erich Haarmann at the German Academy of Natural Scientists Leopoldina , accessed on January 3, 2016.
  5. ^ Geologists' Archives Freiburg
  6. ↑ Oszillationstheorie, Geodictionary
personal data
SURNAME Haarmann, Erich
ALTERNATIVE NAMES Haarmann, Erich Otto (full name)
BRIEF DESCRIPTION German geologist
DATE OF BIRTH June 14, 1882
PLACE OF BIRTH Osnabrück
DATE OF DEATH April 17, 1945
Place of death Bonn