How To Guides

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External resources

  • Australian Stratigraphic Units Database: The objectives of the Australian Stratigraphic Units Database (ASUD) are to provide the primary national standard for geological names in Australia and to improve the efficiency and effectiveness of communication of geological unit information.
  • BGS Lexicon of Named Rock Units: The British Geological Survey (BGS) Lexicon of Named Rock Units provides definitions of the lithostratigraphic, lithodemic and lithomorphogenetic geological units of the United Kingdom and its continental shelf.
  • LithoLex: LithoLex records current and historical lithostratigraphic units in Germany from all geological eras.
  • Léxico Estratigráfico de México: Lexicon documents the various stratigraphic units in Mexico.
  • RNames: RNames is a database of stratigraphic names, including their relationships and equivalencies. It is hosted by the Finnish Museum of Natural History.
  • USGS Geolex: The U.S. Geologic Names Lexicon is a compilation of names and descriptions of geologic units maintained by the National Geologic Map Database. Geographic scope is the United States.
  • Lexicon of Canadian Geological Names on-line: WEBLEX Canada provides information about over 16,000 published geological names used in Canada.