Johannes Herman Frederik Umbgrove
| Johannes Herman Frederik Umbgrove | |
|---|---|
| Johannes Herman Frederik Umbgrove | |
| Born | 5 February 1899 | 
| Died | 14 June 1954 (aged 55) Wassenaar, South Holland, Netherlands | 
| Nationality | Dutch | 
| Scientific career | |
| Fields | Geology, geoscience | 
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.