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| International Association of Geochronologists | |
|---|---|
| Name | International Association of Geochronologists |
| Abbreviation | IAG |
| Formation | 1991 |
| Type | Scientific organization |
| Headquarters | United Kingdom |
| Region served | International |
| Leader title | President |
International Association of Geochronologists is a professional organization focused on advancing geochronology and chronostratigraphy through standards, collaboration, and dissemination. The association engages with agencies, societies, and institutions such as the International Union of Geological Sciences, the Geological Society of London, the American Geophysical Union, the International Commission on Stratigraphy, and the European Geosciences Union to promote consistent time scales, analytical protocols, and database integration.
The association was formed in the early 1990s with links to predecessor efforts at the International Geological Congress, the Royal Society, the United Nations Educational, Scientific and Cultural Organization, the Smithsonian Institution, and national bodies such as the United States Geological Survey and the British Geological Survey. Founding meetings included participants from the Max Planck Society, the Chinese Academy of Sciences, the Russian Academy of Sciences, the Australian Academy of Science, and the National Academy of Sciences (United States), reflecting global concern about disparate radiometric results and stratigraphic frameworks. Early initiatives were influenced by debates at the XVth International Congress on Radiocarbon Dating, recommendations from the International Atomic Energy Agency, and methodological advances reported in journals associated with the Geological Society of America, the Journal of Geophysical Research, and the Earth and Planetary Science Letters.
The association's mission emphasizes harmonization of chronometric methods endorsed by organizations such as the International Union of Pure and Applied Chemistry, the International Union of Pure and Applied Physics, the International Commission on Stratigraphy, the International Geological Congress, and the International Council for Science. Objectives include establishing best practices informed by research at the California Institute of Technology, the ETH Zurich, the University of Cambridge, the Massachusetts Institute of Technology, and the University of Tokyo; coordinating interlaboratory comparisons with centers like the Physikalisch-Technische Bundesanstalt and the National Institute of Standards and Technology; and promoting training linked to programs at the Université de Genève, the University of California, Berkeley, and the University of Oxford.
Membership comprises individual researchers, laboratory directors, and institutional members from entities including the Max Planck Institute for Chemistry, the Scripps Institution of Oceanography, the Woods Hole Oceanographic Institution, the British Antarctic Survey, and national geological surveys such as the Geological Survey of Canada. Governance is organized through an elected council with officers drawn from universities like the University of Edinburgh, the University of Melbourne, the Peking University, the Université Paris-Saclay, and the Seoul National University, and advisory input from committees linked to the International Commission on Radiological Protection and the International Union of Geological Sciences.
The association issues protocols and consensus documents addressing techniques including U–Pb dating, Ar–Ar dating, radiocarbon dating, fission track dating, and luminescence dating, referencing laboratories such as the NERC Isotope Geosciences Facility, the Australian National University, the Institute of Geology and Geophysics, Chinese Academy of Sciences, the Geological Survey of Japan, and the Geological Survey of Finland. Standards development involves coordination with the International Organization for Standardization, the International Association of Sedimentologists, the Society of Economic Geologists, and the International Ocean Discovery Program to ensure traceability, intercalibration, and data reporting formats consistent with repositories like the National Geophysical Data Center and the PANGAEA Data Publisher.
The association organizes conferences, symposia, and hands-on workshops in collaboration with hosts such as the International Geological Congress, the American Geophysical Union Fall Meeting, the European Geosciences Union General Assembly, the Asian Oceania Geosciences Society, and university partners including Stanford University, ETH Zurich, University of Cape Town, University of São Paulo, and McGill University. These events frequently include joint sessions with the International Commission on Stratigraphy, the International Union of Geological Sciences, the International Association of Seismology and Physics of the Earth's Interior, and specialized groups like the Association of Applied Geochemists.
The association curates guidelines, special issues, and datasets published in venues such as Earth-Science Reviews, Geochimica et Cosmochimica Acta, Quaternary Science Reviews, Precambrian Research, and the Journal of Quaternary Science, and collaborates with databases including StratDB, GeoRef, PANGAEA, NOAA Paleoclimatology, and the International Chronostratigraphic Chart maintained by the International Commission on Stratigraphy. Outputs include interlaboratory comparison results, reference material characterizations, and metadata schemas compatible with infrastructures like the Global Biodiversity Information Facility, the Digital Geologic Map of the World, and the World Data System.
The association partners with agencies and projects such as the International Ocean Discovery Program, the Integrated Ocean Drilling Program, the International Continental Scientific Drilling Program, the Intergovernmental Oceanographic Commission, and national academies to improve chronological control across studies from the Himalayas to the Pacific Ocean and the Sahara Desert. Its influence is evident in stratigraphic revisions adopted by the International Commission on Stratigraphy, age models used by the Intergovernmental Panel on Climate Change, and calibration datasets used by research centers including the Lamont–Doherty Earth Observatory, the National Oceanography Centre, and the Centre for Isotope Research. The association's standards have informed policy and heritage work at institutions such as the UNESCO World Heritage Centre and contributed to major syntheses published by the Royal Society and the National Academies of Sciences, Engineering, and Medicine.
Category:Scientific organizations