Olaf Holtedahl
Olaf Holte Dahl (* June 24, 1885 in Oslo, † August 26, 1975 ) was a Norwegian geologist.
Life
Holte Dahl studied from 1903 Science in Oslo with a focus on geology. He was abroad in Germany, Russia and the United States ( Yale University), received his doctorate in Oslo in 1913 and was an associate professor from 1914 and from 1920 until his retirement in 1956 Professor of Geology at the University of Oslo. 1909 to 1911 he took part in an expedition to Spitsbergen, 1914-1917, he ran geological field studies in Lapland and 1918 on Bear Island. 1919 to 1921 he headed a Norwegian expedition to Novaya Zemlya and in 1927/28 he was with Lars Christensen on an Antarctic expedition, on which he conducted geological studies in South Shetland, South Georgia and Graham Land. During the occupation of Norway in World War II, he was Chairman of Professors Association, which sent 1941 letters of protest to the kingdom Josef Terboven.
Holte Dahl was a prominent figure in the Norwegian geology. He was inspired by the polar explorer Fridtjof Nansen ( in turn, sponsored Holte Dahl ) and devoted himself next to the geology of Norway and the Arctic and Antarctic. His dissertation was devoted to the deposits of the Carboniferous in western Spitsbergen (including coal). In addition to scientific works, he also wrote popular science works.
In 1940 he published a detailed map of the maritime areas from Norway ( Dybdekart over de norske kystfarvann med tilgrensende havstrøk, 1:400,000 and 1:600,000 ), which also showed the continuation of glacial valleys in the sea. His marine investigations were continued by his son Hans Holt Dahl. He also published in 1952 ( and 1966 ) is a geological map of Oslo and the surrounding area at a scale of 1:50,000 ( with JA Dons ) and 1930 ( published in Gotha ) a geological map of the Arctic and adjacent areas in the scale of 1:20 million.
In 1951 he received the Wollaston Medal of the Geological Society of London and also the Andrée medal Gunnerus medal and the Leopold- of - book - badge. In 1951 he became commander of the St. Olav's Order. He was a Knight of the Swedish Order of the North Star and a Fellow of the Royal Society.
The Holte Dahl Mountains ( Holte Dahl peaks) in Queen Maud Land, Antarctica are named after him. He was married in 1912 and had a son.
Writings
- Norges Geologi, 2 volumes, Norges Geologiske Undersøkelse, Volume 164, Oslo, 1953 ( also translated into Russian, with geological map 1:1 million )
- Hvordan lands vårt ble til: en oversikt over Norges geological, Oslo 1951, 3rd edition, 1968 ( How was our country, popular science about Norway Geology )
- Publisher: Geology of Norway, Norges Geologiske Undersøkelser, Volume 208, 1960