Johannes Herman Frederik Umbgrove

Johannes Herman Frederik Umbgrove HFRSE (5 February 1899 Hulsberg (Limburg) – 14 June 1954 Wassenaar), called in short Jan Umbgrove, was a Dutch geologist and earth scientist.

He then became employed as a paleontologist for the Dienst van de Mijnbouw in Nederlands Indië (Geological Survey of the Dutch East Indies), where he studied Tertiary foraminifera and corals.

He also studied volcanoes, tectonics, coastal morphology and the bathymetry of the seas surrounding the Sunda Islands.

He studied the paleogeography of the Dutch East Indies from the data acquired by the gravitational surveys of F.A.

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