Geochemistry Department

The Geochemistry Department teaches students to characterize the chemical composition and elemental distribution of Earth materials by combining isotope geochemistry with mineral-stability thermodynamic modeling. Students repeatedly practice reproducing geochemical differentiation through thermodynamic simulation, graduating able to trace the origin and history of Earth materials on their own, reading isotope data alongside thermodynamic models.

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Mathematics Department Physics Department Chemistry Department Biology Department Atmospheric Sciences Department Stratigraphy & Sedimentology Department Structural Geology & Tectonics Department Petrology & Mineralogy Department Geochemistry Department Paleontology & Evolutionary Biology Dept Remote Sensing & Earth Observation Dept Hydrogeology & Soil Science Department Physical Oceanography Department Marine Geology & Geophysics Department Chemical Oceanography Department Marine Biology & Ecology Department

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⭐ Goldschmidt

Chair

💡 geochemistry

Researchers (real GeoVerse Lab members) 12

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1890–1965

Arthur Holmes

Researcher

💡 Pioneered radiometric dating of rocks and constructed the first quantitative geological timescale

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1922–2011

Willi Dansgaard

Researcher

💡 Established the relationship between oxygen isotope ratios in precipitation and temperature, founding ice-core stable isotope paleoclimatology

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1925–2021

Ross Taylor

Researcher

💡 Pioneered the use of rare earth element patterns to determine the composition and evolution of the continental crust and Moon

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1930–1973

Paul W. Gast

Researcher

💡 Pioneered isotope geochemistry of the mantle, applying trace element and isotope ratios to constrain mantle composition and melting processes

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1927–2016

Gerald J. Wasserburg

Researcher

💡 Pioneered high-precision isotope cosmochemistry, dating meteorites and lunar samples and discovering evidence of extinct radionuclides in the early solar system

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1921–2011

James B. Thompson Jr.

Researcher

💡 Applied rigorous thermodynamics to mineral equilibria in metamorphic rocks, founding quantitative metamorphic petrology

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1903–1991

G. Evelyn Hutchinson

Researcher

💡 Father of modern ecology and limnology; founded quantitative biogeochemistry linking element cycling to ecosystem structure

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1936–2024

Grenville Turner

Researcher

💡 Pioneered the argon-argon (40Ar/39Ar) dating method, revolutionizing precision geochronology and cosmochemistry

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1937–2025

Claude Allègre

Researcher

💡 Advanced isotope geochemistry of crust-mantle evolution, developing box models quantifying element exchange between Earth's major geochemical reservoirs

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1925–2006

George Wetherill

Researcher

💡 Developed the concordia-discordia diagram for interpreting U-Pb radiometric ages, and pioneered computer simulations of planetary accretion

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1890–1985

Paul Ramdohr

Researcher

💡 Pioneer of ore microscopy, systematizing the identification and paragenesis of opaque ore minerals under reflected light

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1930–1993

Ted Ringwood

Researcher

💡 Pioneered high-pressure experimental mineralogy, discovering the high-pressure mineral ringwoodite and establishing mantle mineral phase transition theory