20th-century American geologists

American geomorphologist

American educator and geologist

American geologist and mountain climber

United States hydrologist, soil scientist (1875-1945)

American geologist (1940–2005)

American geologist

American scientist

American geologist and paleontologist (1893-1977)

American geologist

American seismologist

American geologist (1904–1999)

American geologist and planetary scientist (1911–2004)

American geologist and university teacher (1864-1931)

American scientist (1900-1969)

American meteorologist (1920–2008)

American geologist (1902–1979)

British-American geologist, petrologist and geochemist

American geologist (1882-1966)

American geologist and dinosaur hunter (1905-1972)

American geologist (1925-2018)

American seismologist

U. S. Geological Survey (1919–2008)

American geologist and stratigrapher (1892-1964)

American chemist and mineralogist, curator of minerals, Smithsonian Institution (1894–1956)

American geologist

American geologist, explorer, and Jesuit priest (1888–1962)

German astrogeologist

American geologist

American geologist (1920-1986)

professor of hydrogeology

American malacologist and invertebrate paleontologist

mineralogist (USGS) and later professor of mineralogy, Temple University, Philadelphia (1909-1988)

American seismologist (born 1961)

American paleontologist and ornithologist (1942— )

American geologist (1898–1974)

American paleobotanist (1893-1961)

American geologist

American geophysicist and professor (1943–2022)

American geologist and archaeologist (1934–1974)

American suffragette and geologist

American geographer, Emily Dickinson Scholar (1880-1968)

Geologist & Paleontologist

American geologist and planetary scientist (1931-1980)

American sedimentologist and geologist

American geologist (1877–1950)

geologist, oceanographer (1914–1998)