USGS: Science Topics: terminologies and classifications

Science Topics

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Terminologies and classifications

Collections of terms often including definitions or scope notes, with some stated relationships among terms

Subtopics:
Geologic time scales (7 items)

Results 21 - 25 of 25 listed alphabetically [list by similarity]

Photo glossary of volcano terms [More info]: Illustrates and describes commonly used volcano-related terms.
Precambrian Time - The Story of the Early Earth [More info]: Explains what we know about the early history of the earth and how we study the deposits formed during that time to understand the formation of the earth and life.
Standardized National Vegetation Classification System [More info]: Document on the National Vegetation Classification Standard with information on applications, background, development, characteristics, nomenclature standards, relationship to other classifications, and how to do vegetation mapping.
Vegetation sampling and classification of Great Smoky Mountains National Park (Cades Cove and Mount Le Conte quadrangles): final report [More info]: Report of a pilot study to classify vegetation communities in parts of the Smoky Mountains National Park by sampling vegetation in selected areas with information on field methods and data analysis and lists of communities identified.
Visual Glossary - asthenosphere [More info]: The asthenosphere is the ductile part of the earth just below the lithosphere, including the lower mantle. The asthenosphere is about 180 km thick.

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U.S. Department of the Interior | U.S. Geological Survey
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