Board of Directors

Sumit Chakraborty

Ruhr Universität at Bochum, Germany

01/2022 - 12/2023

Sumit Chakraborty is a Professor at the Ruhr Universität at Bochum, Germany and director of the central accelerator facility, RUBION, on the campus of the University. He is interested in the timescales of geological and planetary processes, and in how processes occurring on a hierarchy of nested timescales are coupled to each other. He uses physical chemistry, in particular kinetics and diffusion, to develop tools for the determination of timescales. His research is based to equal extents on field studies, laboratory experiments and theoretical developments. He is a Geochemistry Fellow and was awarded the Dana Medal by the Mineralogical Society of America.

Elisabeth (Liz) Sikes

Rutgers University, USA

Vice President
01/2022 - 12/2023

Elisabeth (Liz) Sikes, is a professor of Oceanography at Rutgers University in New Jersey, USA. She is a paleoceanographer and paleoclimatologist whose research seeks to understand the ocean's influence on the carbon cycle and climate. Her research interests range from investigating the Southern Ocean's multiple roles in controlling glacial climate cycles to modern carbon cycling in estuaries. She gave the Emilani lecture in 2020 at the Fall AGU Meeting and has served as an associate editor of the journal Paleoceanography and Paleoclimate. She has served the Geochemical Society as a Board member, Chair of the Organic Geochemistry Division, and as the founding Chair of the Ethics Committee. She serves as co-chair of the Southern Ocean Regional Panel (SORP) of CLIVAR (Climate and Ocean Variability, Predictability, and Change) and CliC (Climate and Cryosphere), which is a core program of the World Climate Research Programme (WCRP). She is a member of the Southern Ocean Task Force for the United Nations Decade of Ocean Science for Sustainable Development.

Vickie Bennett

Australian National University, Australia

Past President
01/2022 - 12/2023

Vickie Bennett is a Professor at the Research School of Earth Sciences, Australian National University, where she is also an Associate Director and the Head of the SPYDE2R Isotope Geochemistry Facility. Her research applies isotopic approaches to understanding the origin and evolution of Earth's continental crust and mantle reservoirs, early planetary differentiation, and geosphere–biosphere interactions in deep time. She is a Geochemical Fellow and a Fellow of the Geological Society of America.

Magali Ader

Institute of Earth Physics of Paris, France

International Secretary
01/2017 - 12/2022

Magali Ader obtained her Master (1995) and her PhD (1999) at the Institut de Physique du Globe de Paris, France. After a post doc at Reading University, she joined the Paris Diderot University and Institut de Physique du Globe de Paris in 2001, where she was appointed professor of geochemistry in 2013. Her research interests focus mainly on deciphering C, N and Cl stable isotope compositions in sedimentary rocks and fluids. This has led her to address several aspects of Earth Sciences including the evolution of carbon and nitrogen biogeochemical cycles through time, bacterial vital effects, diagenesis, fluid-rock interactions in CO2 storage sites and solute transport properties in sedimentary basins.

Sasha Turchyn

University of Cambridge, UK

01/2017 - 12/2022

Sasha (Alexandra) Turchyn is a low temperature isotope geochemist at the University of Cambridge (UK) in the Department of Earth Sciences. She got her PhD from Harvard University and was a postdoctoral fellow at the University of California, Berkeley, at the Miller Institute for Basic Research. She is currently a Reader in Biogeochemistry and fellow of Trinity Hall College. Sasha's research focuses on the use of light stable isotopes to elucidate pathways and processes in the sedimentary biosphere and to understand the role of sedimentary diagenesis in the global carbon cycle.

Haibo Zou

Auburn University, USA

01/2020 - 12/2022

Haibo Zou is Professor of Geology in the Department of Geosciences at Auburn University, USA. His research areas include isotope geochemistry, igneous petrology, volcanology, and theoretical geochemistry. He is the author of the book Quantitative Geochemistry. He is an Associate Editor for Geological Society of America Bulletin and a Fellow of the Geological Society of America.

Christopher Junium

Syracuse University, USA

OGD Chair
01/2022 - 12/2023

Christopher Junium is Associate Professor of Earth Sciences at Syracuse University (USA). He is a sedimentary and organic geochemist focusing on the redox evolution of the Earth, specializing in biogeochemical cycling. He uses a range of geochemical tools, but focuses on the stable isotopes of nitrogen, carbon and sulfur, with a particular interest in compound-specific, stable isotope techniques. His research interests span the spectrum of geologic time from the Archean to modern systems. Current, he is working principally on the Cretaceous and Neoproterozoic with and eye toward understanding future global change.

Ken Rubin

University of Hawaii

Goldschmidt Officer
01/2019 - 12/2022

Kenneth H. Rubin is a Professor of Geochemistry and Volcanology in the Department of Earth Sciences, School of Ocean and Earth Science and Technology at the University of Hawai'i at Manoa.

Jeff Catalano

Washington University in St. Louis, USA

GCA Executive Editor

Jeff Catalano is a faculty member in the Department of Earth and Planetary Sciences at Washington University, where he is currently a professor of aqueous geochemistry and mineralogy. His current research program now spans the areas of environmental biogeochemistry, planetary geochemistry, and geobiology. Active projects in Jeff's group investigate: (1) trace metal fate during iron and manganese oxide mineral transformations, (2) the properties of interfacial water near mineral surfaces, (3) microbial utilization of Fe(II) in trioctahedral clay minerals as electron donors on the early Earth, (4) oxidation of iron on Mars by oxychlorine species, (5) redox-driven recrystallization of lead and uranium oxide minerals, (6) clay formation and alteration on Mars, and (7) trace metal limitations on methanogenesis, denitrification, and Hg methylation in freshwater aquatic systems.

Mark Rehkämper

Imperial College London, UK

01/2020 - 12/2022

Mark Rehkämper is Professor of Isotope Geochemistry at the Department of Earth Science & Engineering of Imperial College London (United Kingdom). His research interests are broad and encompass the application of radiogenic and non-traditional stable isotope systems to address questions in planetary, earth, environmental and life sciences. For example, he applies isotopic measurements to study cycling of anthropogenic Pb in the oceans, investigate the depletion of volatile elements in the terrestrial planets, to examine the uptake of toxic Cd by crops, and elucidate the role of trace metals in human health. He has previously served the society as a member of the Nominations Committee, the Joint Publications Committee, and supported various Goldschmidt Conferences.

Tracy Rushmer

Macquarie University, Australia

01/2020 - 12/2022

Tracy Rushmer is a faculty member in the new Earth and Environmental Sciences Department at Macquarie University (Australia) and is also serving as Associate Dean Higher Degree Research for the Faculty of Science and Engineering. She is an experimental petrologist and overseas several experimental laboratories which can induce both hydrostatic and deformation conditions to investigate mineral interactions under pressure and temperature. Her work focuses on the evolution of planetary bodies, particularly on differentiation, which is the fundamental mechanism by which the terrestrial planets evolve through time. She previously served on the Nominations Committee and as a theme chair for Goldschmidt in 2017 and 2018. She is a Fellow of the Mineralogical Society of America.

Cin-Ty Lee

Rice University

01/2021 - 12/2023

Cin-Ty Lee is a geochemist with interests in mantle and crustal differentiation, ore genesis, weathering, interactions between the deep Earth and atmosphere, and crystal growth kinetics. He has published over 150 peer-reviewed papers in geochemistry, geophysics and tectonics. He has served as editor of Geochemistry, Geophysics and Geosystems, Geochemical Perspective Letters, and Science Advances. He has served in a number of leadership positions, including being department chair at Rice University. He is passionate about education, science communication, diversity and holding dialogs between academics and industry. He holds a PhD from Harvard University and a BA from UC Berkeley and has been a professor at Rice University since 2002.

Liping Zhou

Peking University

01/2021 - 12/2023

Liping Zhou is Boya Distinguished Professor and Director of Institute of Ocean Research at Peking University in Beijing. He graduated from Peking University, got his PhD from Cambridge University, and did postdoctoral research in the University of East Anglia and then Cambridge University. His research aims to apply multiple geochemical approaches for revealing and understanding the history of Quaternary climate change recorded in the continental and marine archives. He is currently using stable and radiogenic isotopes of seawater to characterise water masses and ocean circulation in the South China Sea, the Philippine Sea and the NE Indian Ocean. He previously served on the Science Committee for the 2020 Goldschmidt Conference.

Marly Babinski

University of São Paulo, Brazil

01/2022 - 12/2024

Marly Babinski is an associate professor at the Department of Mineralogy and Geotectonics, Institute of Geosciences, University of São Paulo, Brazil. She uses traditional and non-traditional isotopes to determine the age of the rocks and unravel seawater changes along the Earth's evolution to track major changes in the atmosphere, hydrosphere, and lithosphere, and impacts on life evolution. More recently, she has explored the atmosphere pollution on megacities using isotope geochemistry, mainly applying Pb, Zn, and Cu isotopes. She is on the scientific committee of the Brazilian Geochemistry Society and member of the Brazilian Geology Society.

Allison T. Greaney

Oak Ridge National Laboratory, USA

01/2022 - 12/2023

Allison Greaney is a radiogeochemist at Oak Ridge National Laboratory (USA). She is involved in a variety of projects relating to the nuclear fuel cycle and non-destructive assay of nuclear materials for safeguards purposes. She received her PhD in geochemistry in 2018 from the University of California at Santa Barbara. Her research revolved around molybdenum and other questionably chalcophile elements and their use as geochemical proxies for understanding how the composition of the continental crust and atmosphere have evolved over time.

Alexis Templeton

University of Colorado at Boulder, USA

01/2022 - 12/2024

Professor Alexis Templeton is a geochemist and geomicrobiologist at the University of Colorado at Boulder (USA). She utilizes spectroscopic, isotopic and molecular tools to characterize the chemical and biological states of systems undergoing active water/rock interactions. Her research focuses on defining the role of microorganisms in transforming the aqueous and mineral chemistry of rock-hosted ecosystems. She has previously been a member of the Geochemical Society Patterson Award and Endowed Biogeochemistry Lecture Committees.