Silica (SiO2) is ubiquitous on Earth and has become integral to daily life. Although it has a simple chemical formula, the SiO2 system is very complex, with at least 15 known modifications, i.e., mineral phases with the same stoichiometric composition but different crystal structures. Quartz (trigonal, low-temperature α-quartz) is the most important silica polymorph in nature and occurs as a comm…
The GS and EAG are pleased to announce the 2026 Geochemistry Fellows. These 16 exemplary scientists are recognized for major contributions made over the course of their careers.
John Eiler will receive the 2026 V. M. Goldschmidt Award, the society's highest honor, presented annually for major achievements in geochemistry over a career.
Robert Mason will receive the Clair C. Patterson Award, presented annually for an innovative breakthrough in environmental geochemistry of fundamental significance within the last decade, particularly in service to society.
Melisa Diaz will receive the 2026 F. W. Clarke Award, presented for a single outstanding contribution to geochemistry or cosmochemistry by an early-career scientist.
Francien Peterse will receive the John Hayes Award, given to a mid-career scientist for outstanding accomplishments that draw together multiple fields of investigation to advance biogeochemical science.
Earth’s geological carbon cycle is central to both climate and life. It is generally considered to act as a “thermostat,” regulating climate and preventing global mean temperatures from fluctuating wildly. The textbook model of this regulation involves variations in solid Earth degassing rates, leading to changes in atmospheric CO2 concentrations, surface temperature, and precipitation; in turn, …
The Variscan orogen formed between 380 and 300 million years ago through several accretionary and collisional cycles, culminating with the construction of the Pangea supercontinent. This process occurred via sequential opening and closure of oceanic basins, synchronous detachment of Gondwana-derived continental ribbons, and their outboard amalgamation onto the Laurussia margin. The Variscan oroge…
All current GS members are entitled to vote in the annual Board of Directors election. The board governs the society throughout the year and represents the interests of the membership. Please take a moment to review the candidates and vote. The election is open until 22 December. If you have not received your ballot by email, please let us know at gsoffice@geochemsoc.org.
The GS will hold its annual meeting of the membership on Tuesday, December 9 at 10:00 EDT. Society President Liz Sikes will present an update on programs and finances, followed by an open discussion. All Geochemical Society members are encouraged to attend. The meeting will take place virtually via Zoom.
The October 2025 issue of Elements “Sample Return Through the Ages”, demonstrates the power of mineralogical, petrological, and geochemical studies of oftentimes small amounts of material to learn about the formation and evolution of planetary bodies, the Solar System, and our place in it. Access it now on the Elements website.
The GS is pleased to announce a new service for members—free posting of internships in the Geochemical Career Center.
Internships should offer structured, short-term experiences that support learning and professional development in geochemistry or related geoscience fields. These opportunities are generally intended for undergraduate students, graduate students, or recent graduates looking to gai…
