Hans Thürach

from Wikipedia, the free encyclopedia

Hans Thürach (born March 1, 1859 in Ipsheim ; † July 11, 1927 in Freiburg im Breisgau ) was a German geologist who dealt in particular with the Keuper in Franconia and the geology of the Spessart .

life and work

Thürach was the son of a brewer and went to school in Ipsheim, Ansbach (royal secondary school) and Nuremberg (royal industrial school). From 1876 he first studied chemistry in Würzburg, but switched to geology with Fridolin Sandberger after suffering from a lung disease . On his behalf, he geologically mapped the crystalline basement of the Spessart (scale 1: 25000), which also became the basis of his dissertation in 1884 ( on the occurrence of microscopic zircons and titanium minerals in the rocks ). The doctorate was awarded summa cum laude . From 1884 he was at the Bavarian Mining Authority, initially as an assistant assistant and from 1888 as an assistant. In between he completed his military service in 1884/1885. In 1885 he became a member of the German Geological Society . At the Oberbergamt he researched in particular the Keuper in Franconia and the Upper Palatinate. He published the results in 1888/1889.

From 1893 he worked at the Großherzoglich Baden Geological State Institute in Heidelberg under Karl Heinrich Rosenbusch , from 1894 as a state geologist. One reason for the change were differences with his superior, Oberbergdirektor Carl Wilhelm von Gümbel . In 1908 he became a Grand Ducal Bergrat. In 1924 he retired. During this time he created eleven geological map sheets (scale 1: 25,000) for the land survey and was involved in five others (his mappings were partly in the Keuper des Kraichgau, partly in the Black Forest and the Rhine plain). For his geological maps he also produced layer maps (contour lines of the geological layers), in which he played a pioneering role. He was also an appraiser for various deep boreholes for mineral and thermal waters, crude oil and salt not only in Baden, but also in his native Franconia. In 1899 he predicted rock salt deposits in the middle Muschelkalk of Mainfranken, which were also encountered during drilling, for example in the Steigerwald.

During his investigations into the Keuper in Franconia, he also recognized that today's border of the Mesozoic Era (Franconian line) did not represent the Triassic coast, as was usually assumed at the time, but that the Paleozoic Era of the Franconian Forest and the Fichtel Mountains was originally covered by it.

Since he also tried to scientifically substantiate the use of the dowsing rod , he fell into disrepute towards the end of his career.

He had been married since 1889. The marriage was childless.

Fonts

  • Overview of the structure of the Keuper in northern Franconia compared to the neighboring areas. In: Geognostische Jahreshefte , Volume 1, 1888, pp. 75–162.
  • Overview of the structure of the Keuper in northern Franconia compared to the neighboring areas, Second Theil. In: Geognostische Jahreshefte , Volume 2, 1889, pp. 1–90.
  • About the structure of the primeval mountains in the Spessart. In: Geognostische Jahreshefte , Volume 5 for 1892, 1893, pp. 1–159.
  • About the possible spread of rock salt deposits in northern Bavaria. In: Geognostische Jahreshefte , Volume 13, 1900, pp. 107–148.

literature

Web links

Individual evidence

  1. ^ Membership directory of the German Geological Society March 1921
personal data
SURNAME Thürach, Hans
BRIEF DESCRIPTION German geologist
DATE OF BIRTH March 1, 1859
PLACE OF BIRTH Ipsheim
DATE OF DEATH July 11, 1927
Place of death Freiburg in Breisgau