Johannes Herman Frederik Umbgrove

Johannes Herman Frederik Umbgrove (born February 5, 1899 in Hulsberg ( Limburg ), † June 14, 1954 in Wassenaar ), known as Jan Umbgrove , was a Dutch geologist and geoscientist .

Umbgrove studied geology at the University of Leiden . He graduated in 1926 and found a job as a palaeontologist with the Dienst van de Mijnbouw in Nederlands Indië (Geological Survey of the Dutch East Indies ), where he studied tertiary foraminifera and corals . He also devoted himself to the study of volcanoes , the tectonics , the coasts - morphology and bathymetry of the waters around the Sunda Islands .

In 1929 he went back to Leiden to become an assistant to his former teacher Berend George Escher (1885-1967). In 1930 he was appointed professor to the chair of stratigraphy and paleontology at the University of Delft . Here, too, his research work was multidisciplinary. He studied the paleogeography of the Dutch East Indies by using data that FA Vening-Meinesz had collected through gravity measurements , examined the paleontology of corals and coral reefs , carried out tectonic and volcanological research and dealt with the geology of the Netherlands. Due to his wide-ranging research, he was one of the first to understand the earth as a changeable system. He formulated this idea in his book The Pulse of the Earth from 1942. In 1946 he was elected an Honorary Fellow of the Royal Society of Edinburgh .

In 1952 he became seriously ill and was tied to the bed, where he continued to write until his death in 1954.

literature

• IM van der Vlerk & Ph. H. Kuenen: Levens report by Johannes Herman Frederik Umbgrove. Geologie & Mijnbouw, Vol. 16, pp. 339-346, 1954
• AJ Pannekoek: Geological research at the universities of The Netherlands, 1877-1962 Geologie & Mijnbouw, Vol. 41, No. 4, pp. 161-174, 1962

Individual evidence

1. ^ Fellows Directory. Biographical Index: Former RSE Fellows 1783–2002. (PDF file) Royal Society of Edinburgh, accessed April 18, 2020 .