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Geologic Mapping in the U.S. Geological Survey (1987) / Chapter Skim
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... Because of the constant acquisition of new information, changing concepts, changing technology, and evolving needs, geology is an unending subject of research; and geologic maps are subject to constant review and periodic revision. For the purposes of program analysis, the committee defines geologic mapping as the preparation of a map from field surveys and other sources of information on which is recorded geologic information such as the distribution, nature and age of rock units, and the occurrence of structural features, mineral deposits, and fossil localities.
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Key Terms

  • geologic mapping
  • geologic maps
  • state surveys
  • mapping program
  • geological surveys

  • state geological
  • mineral resources
  • geologic information
  • geological survey
  • federal survey

  • prepare maps
  • state survey
  • water resources
  • mineral resource
  • constant review

  • periodically reexamined
  • vigorous geologic
  • resource potential
  • natural hazards
  • fundamental terms

  • changing concepts
  • defines geologic
  • expanded role
  • mineral deposits
  • conduct geological

  • structural features
  • equally apparent
  • organized geologic
  • program follow
  • significantly expanded


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