The purposes of the Commission are to

  • develop statements of stratigraphic principles,
  • recommend procedures applicable to classification and nomenclature of stratigraphic and related units,
  • review problems in classifying and naming stratigraphic and related units, and
  • formulate expressions of judgment on these matters.


The present-day Commission is comprised of three representatives each from of the American Association of Petroleum Geologists, Association of American State Geologists, Geological Society of America, United States Geological Survey, and the Geological Survey of Canada; two each from of the Society for Sedimentary Petrology, Canadian Society of Petroleum Geologists, Geological Association of Canada, and Servicio Geologico de Mexicano; and one each from the Asociación Mexicana de Geólogos Petróleros and Sociedad Geológica Mexicana. In addition, there are five Commissioners-at-Large. Representatives serve three years, with staggered terms. Chairman and Vice-Chairman are elected from within the Commission membership, and each serves one year. Most members of the Commission are representatives of the fields of paleontology, biostratigraphy and stratigraphy.