Terminologies and classifications
Collections of terms often including definitions or scope notes, with some stated relationships among terms
Geologic time online edition [ More info] Booklet giving general explanations of geologic time, major divisions of geologic time, relative and radiometric time scales, index fossils, and the age of the earth.
Geologic time scale bookmark [ More info] This printable bookmark was designed for use with USGS activities at the 2nd USA Science and Engineering Festival, held April 26-29, 2012.
Geologic time scale chart [ More info] Chart of the geologic time scale with references.
Glossary of glacier terminology: a glossary providing the vocabulary necessary to understand the modern glacier environment. [ More info] An illustrated glossary of terms relating to modern glaciers and glacial landforms based mainly on Alaskan examples.
Glossary of terms in paleontology [ More info] Dictionary of terms associated with paleontology with brief definitions.
Glossary of water-use terminology [ More info] Dictionary of terms associated with water use from the publication: Estimated Use of water in the United States in 1990.
How to Use the Marine Realms Information Bank (MRIB) Digital Libraries [ More info] A step-by-step guide to conducting topical, geographic, and keyword searches of MRIB; viewing and refining search results; and exporting the results in several formats.
Hydrologic unit maps [ More info] Overview of hydrologic unit maps adapted from USGS Water-Supply Paper 2294 giving description of hydrologic units, link to list of hydrologic units, paper maps and digital spatial data sets.
Improving access to metadata using keywords from controlled vocabularies [ More info] Description of the use of Place Keyword Assistant, a software tool, for tagging metadata with geographic names from standardized lists or controlled vocabularies. Includes instructions on use and downloading software files.
National Geologic Map Database Geologic Names Lexicon GEOLEX [ More info] Search tool for locating lithologic and geochronologic unit names for geologic studies.
Alphabetical Index of Topics
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