List of Geologists - D

D

• G. Brent Dalrymple (born 1937), USA, author The Age of the Earth (1991), winner National Science Medal, 2005
• James Dwight Dana (1813–1895), USA, author of System of Mineralogy (1837)
• Charles Darwin (1809–1882), British naturalist, author of On the Origin of Species
• George Mercer Dawson (1849–1901), Canada, pioneer Yukon geologist
• John William Dawson (1820–1899), Canada, pioneer Acadian geologist
• Henry De la Beche (1796–1855), England, first director of the Geological Survey of Great Britain
• Duncan R. Derry (1906–1987), Canadian economic geologist
• Nicolas Desmarest (1725–1815), France, pioneer volcanologist
• Thomas Dibblee (1911-2004), USA, geological mapper and pioneer of San Andreas Fault movement study
• William R. Dickinson (born 1930), Arizona, USA, plate tectonics, Colorado Plateau
• Robert S. Dietz (1914–1995), USA, seafloor spreading pioneer
• Ignacy Domeyko (1802–1889), Slavic-Chilean geologist and mineralogist
• Robert John Wilson Douglas (1920–1979), Canadian petroleum geologist
• Aleksis Dreimanis (born 1914), Latvia & Canada, award-winning Quaternary geologist
• Hugo Dummett (1940 - 2002), South African mineral-exploration geologist, co-discoverer of Ekati Diamond Mine.
• Alexander du Toit (1878–1948), South African geologist, established correlations between Argentina, Paraguay, Brazil and South Africa
• Clarence Edward Dutton (1841–1912), USA, author of Tertiary History of the Grand Canyon District