The Geochemical Society honors Frederick A. Frey (1938–2021), whose pioneering research on Earth’s upper mantle and magmas shaped modern geochemistry. A dedicated mentor and esteemed leader, he advanced trace element and isotope studies, guided over 30 graduate students, and inspired colleagues worldwide through science, teaching, and exploration. More…

Stuart Ross Taylor (1925–2021) made groundbreaking contributions to understanding Earth’s crust, the Moon, tektites, and the solar system. A Goldschmidt Medalist, prolific author, and mentor, he combined scientific rigor with humility, leaving a lasting legacy in planetary and geochemical research. More…

Günter W. Lugmair (1940–2021) revolutionized isotope geochemistry, pioneering Sm-Nd dating, discovering extinct radionuclides, and advancing mass spectrometry to unprecedented precision. His work illuminated the Moon’s history and early Solar System processes, while his mentorship and passion for science inspired generations. More…

John Hayes (1940–2017) was a pioneering geochemist whose isotope studies reshaped understanding of the carbon cycle, photosynthesis, and Earth’s environmental history. A gifted mentor and celebrated scholar, he combined scientific rigor with warmth, curiosity, and a deep passion for life, travel, and the natural world. More…

Ian Hutcheon (1948–2015) advanced cosmochemistry, planetary science, and nuclear forensics through pioneering isotopic studies and leadership at Lawrence Livermore National Laboratory. A gifted mentor and collaborator, he authored over 200 works, co-wrote Nuclear Forensics Analysis, and inspired colleagues worldwide. More…

Robert A. Berner (1935–2015) transformed geochemistry through pioneering work on sedimentary processes, carbon cycling, and Earth’s CO₂ history. A devoted mentor and leader, his research shaped modern climate science and inspired generations, leaving a legacy of scientific rigor, curiosity, and deep humanity. More…

Karl K. Turekian (1927–2013), Sterling Professor at Yale, was a world-renowned geochemist whose five-decade career shaped the field. A past Geochemical Society president, prolific author, and mentor, he combined groundbreaking research with an infectious enthusiasm and storytelling that inspired generations. More…

Professor Devendra Lal, a renowned cosmic ray physicist and Earth scientist celebrated for his pioneering work and his dedicated mentorship, has died at the age of 83. More…

John J. Mahoney, a professor emeritus and research scientist known for his significant contributions in flood basalt volcanism and mantle geochemistry, has passed away in Honolulu after a brief illness. More…

Dr. Varanasi Rama Murthy, an influential geochemist known for his wide-ranging contributions to mantle geochemistry and cosmochemistry and his leadership in science education, has died. More…