Terminologies and classifications
Collections of terms often including definitions or scope notes, with some stated relationships among terms
Biocomplexity Thesaurus [ More info] Browsable online access to the CSA/NBII Biocomplexity Thesaurus developed in 2002-2003 through a partnership between the NBII and CSA as a merger of five thesauri.
Classification of natural ponds and lakes in the glaciated prairie region [ More info] Presents a wetland classification system that reflects seasonal, regional, and local variations in the environment.
Classification of wetlands and deepwater habitats of the United States [ More info] Detailed publication on the classification system for an inventory of wetlands and deepwater habitats of the United States used to describe ecological taxa and arrange them in a system useful to resource managers.
Coal Resource Classification System of the U.S. Bureau of Mines and U.S. Geological Survey [ More info] A report published jointly by the U.S. Bureau of Mines and U.S. Geological Survey giving definitions of coal resource classification terms.
Coal Resource Classification System of the U.S. Geological Survey [ More info] The classification system by which coal is classified into resource/reserve base/reserve categories on the basis of the geologic assurance of the existence of those categories and on the economic feasibility of their recovery.
Compilation of various geologic time scales [ More info] Preliminary report comparing various geologic time scales. Text is HTML or plain text format, and colored compilation chart in Excel format.
Divisions of Geologic Time - Major Chronostratigraphic and Geochronologic Units [ More info] A summary of the divisions of geologic time intended to provide a consistent time scale to be used in communicating ages of geologic units in the United States.
Earthquake glossary [ More info] Dictionary of terms associated with earthquakes with simple definitions and photographs especially suited for students.
Fossils, rocks, and time [ More info] Booklet describes how paleontologists use the identification of fossils to recognize rocks of the same or different ages.
Geologic glossary for National Parks [ More info] Geologic glossary containing simplified definitions for technical terms used within the USGS/National Park Service website on national parks.
Alphabetical Index of Topics
a b c d e f g h i j k l m n o p q r s t u v w x y z