906 articles
Gregory J. Retallack
Gregory J. Retallack is an Australian-born paleontologist and emeritus professor at the University of Oregon, known for his research on the fossil record of soils.
Grenville Turner
Grenville Turner (died 2024) was a British isotope geochemist who, with Craig Merrihue, invented the argon-40/argon-39 dating method and produced the first precise ages of the Apollo lunar rocks.
Grove Karl Gilbert
Grove Karl Gilbert (1843–1918) was an American geologist who served the USGS for 39 years and became a founder of geomorphology, the study of how landforms are shaped.
Gunnar Hoppe
Gunnar Hoppe (1914–2005) was a Swedish geographer and Quaternary geologist, professor of physical geography at Stockholm University from 1954 to 1980, known for his 1948 study of ice recession in Norrbotten.
Guoyin Shen
Guoyin Shen is a high-pressure geophysicist at Argonne National Laboratory's Advanced Photon Source, known for a 2001 Nature study of the post-spinel transformation marking the 660-km discontinuity.
Gustaaf Adolf Frederik Molengraaff
Gustaaf Adolf Frederik Molengraaff (1860–1942) was a Dutch geologist who first described the Bushveld Complex in South Africa and led pioneering expeditions to Borneo and Timor.
H. E. Wright
Herbert E. Wright Jr. (1917–2015) was an American Quaternary scientist at the University of Minnesota, elected to the National Academy of Sciences in 1977 and known for the COHMAP project.
H. Jay Zwally
H. Jay Zwally is an American glaciologist at NASA Goddard who pioneered satellite altimetry of the Greenland and Antarctic ice sheets and served as ICESat Project Scientist.
H.W. Nesbitt
H.W. Nesbitt, or H. Wayne Nesbitt, is a Canadian geochemist and Royal Society of Canada fellow at Western University known for work on continental weathering and rare earth elements.
Hailiang Dong
Hailiang Dong (董海良) is a Chinese geomicrobiologist and professor at China University of Geosciences, Beijing, who showed iron-reducing bacteria catalyze clay transformation and won the 2025 Arthur L. Day Medal.
Hal Thirlaway
Hal Thirlaway, born Henry Ivison Shipley Thirlaway (1917–2009), was a British seismologist who led the UK's forensic seismology program at Blacknest, Berkshire, developing methods to distinguish underground nuclear explosions from earthquakes.
Hannah Dietterich
Hannah Dietterich is an American research geophysicist and volcanologist at the USGS Alaska Volcano Observatory in Anchorage, a recipient of the Presidential Early Career Award.
Hans Cloos
Hans Cloos (1885–1951) was a German geologist who pioneered granite tectonics and wet-clay model experiments of rock deformation, held the geology chair at Bonn from 1926, and wrote Conversation with the Earth.
Hans P. Eugster
Hans P. Eugster (Hans-Peter Eugster, 1925–1987) was a Swiss-born American experimental petrologist and geochemist at Johns Hopkins University, known for the oxygen buffer technique and saline lake geochemistry.
Hans Ramberg
Hans Ramberg was a Norwegian geologist who studied mountain-chain formation and crustal deformation, building the Hans Ramberg Tectonic Laboratory at Uppsala University and writing Gravity, Deformation and the Earth's Crust in 1967.
Haraldur Sigurðsson
Haraldur Sigurðsson, born 1939 in Stykkishólmur, Iceland, is an Icelandic volcanologist and geochemist, emeritus professor at the University of Rhode Island known for work on the AD 79 Vesuvius eruption and Icelandic rhyolites.
Harmon Craig
Harmon Craig (1926–2003) was an American isotope geochemist who spent his career at Scripps Institution of Oceanography, pioneering carbon isotope and radiocarbon studies of the global carbon cycle.
Harold Edwin Hurst
Harold Edwin Hurst (1880–1978) was a British hydrologist who spent some 60 years studying the Nile for the Egyptian government and discovered the Hurst phenomenon, quantified by the Hurst exponent.
Harold Jeffreys
Sir Harold Jeffreys (1891–1989) was a British geophysicist and Bayesian statistician at Cambridge who demonstrated the Earth's liquid core and wrote Theory of Probability (1939).
Harold Lloyd James
Harold Lloyd James was an American economic geologist whose 1954 facies model reshaped the study of iron-formation, and who served as chief geologist of the U.S. Geological Survey.
Harrison Brown
Harrison Brown (1917–1986) was an American geochemist who developed the plutonium isolation process for the Manhattan Project, then used meteorites to date the Earth at 4.5 billion years.
Harrison Gray (research geologist)
Harrison J. Gray is an American research geologist at the USGS Geosciences and Environmental Change Science Center in Lakewood, Colorado, who received the 2025 PECASE award.
Harry B. Whittington
Harry B. Whittington, also known as Harry Blackmore Whittington, was a British paleontologist (1916–2010), professor at Harvard and Cambridge, and leading trilobite authority who re-described the Burgess Shale.
Harry Fielding Reid
Harry Fielding Reid was an American seismologist and glaciologist at Johns Hopkins University who developed the elastic rebound theory of earthquakes from studies of the 1906 San Francisco earthquake.
Harry Rosenbusch
Harry Rosenbusch (1836–1914) was a German petrographer and mineralogist, professor at Strasbourg and then Heidelberg from 1878 to 1908, whose Mikroskopische Physiographie established thin-section microscopy of rocks.
Harry Vereecken
Harry Vereecken is a Belgian soil physicist and hydrologist known for vadose zone hydrology and pedotransfer functions, who led the Agrosphere Institute at Forschungszentrum Jülich until 2025.
Hatten Yoder
Hatten Yoder (1921–2003) was an American experimental petrologist who spent fifty-five years at the Carnegie Institution's Geophysical Laboratory, directing it from 1971 to 1986, and whose basalt-melting experiments established how magmas form in the mantle.
Haydn H. Murray
Haydn H. Murray, also known as Haydn Herbert Murray, was an American clay mineralogist, a Georgia Kaolin executive who built Indiana University's applied clay science program.
Haydn Herbert Murray
Haydn Herbert Murray (1924–2015) was an American clay mineralogist and leading expert on kaolin, who directed research at Georgia Kaolin before chairing geology at Indiana University.
Heather M. Stapleton
Heather M. Stapleton is an American environmental chemist and exposure scientist at Duke University who studies flame retardants and PFAS in homes, products, and people, especially children.