<descriptor thcode="1"><thesaurus thcode="1" name="Common geographic areas" scope="Names and identifiers of commonly-known geographic areas including oceans, continents, countries, states and provinces in North America, counties in the United States, USGS map quadrangles, and hydrologic units, nested and cross-referenced by overlap." creator="U.S. Geological Survey" rights="Public domain" edition="1.0" date="2002-03-21" codetype="alpha" prefix="geo" uri="http://www.usgs.gov/science/CommonGeographicAreas" tblname="geo" nonpref="geonp" relterm="geort" root_code="root" contact="pschweitzer"><category><term thcode="25" code="13" name="transitive" parent="12" scope="Narrower terms have an &quot;is a&quot; relationship with their broader terms, and generally can be described as part-of, type-of, or instance-of the broader term."/><term thcode="25" code="30" name="ambiguous labels" parent="26" scope="A given preferred label may be used for more than one concept in the thesaurus. A concept must be specified using its unique identifier (code). This may occur in the names of places or people."/><term thcode="25" code="4" name="place" parent="2" scope="Terms indicate extent in space, typically by reference as the names of geographic areas known from information that is stored elsewhere."/><term thcode="25" code="16" name="hierarchical" parent="11" scope="Substantive broader-narrower relationships exist among the terms."/><term thcode="25" code="13" name="transitive" parent="12" scope="Narrower terms have an &quot;is a&quot; relationship with their broader terms, and generally can be described as part-of, type-of, or instance-of the broader term."/><term thcode="25" code="30" name="ambiguous labels" parent="26" scope="A given preferred label may be used for more than one concept in the thesaurus. A concept must be specified using its unique identifier (code). This may occur in the names of places or people."/><term thcode="25" code="4" name="place" parent="2" scope="Terms indicate extent in space, typically by reference as the names of geographic areas known from information that is stored elsewhere."/><term thcode="25" code="16" name="hierarchical" parent="11" scope="Substantive broader-narrower relationships exist among the terms."/></category><altlabel><altlabel>Augmented FIPS 10-4 and FIPS 6-4</altlabel><altlabel>Augmented FIPS 10-4 and FIPS 6-4</altlabel><altlabel>CommonGeographicAreas</altlabel><altlabel>CommonGeographicAreas</altlabel></altlabel></thesaurus><term thcode="1" code="a505" name="Valley and Ridge carbonate-rock aquifers" parent="aroot" scope="aquifer"/><bt><term thcode="1" code="aroot" name="US Aquifers" parent="fUS" scope="Aquifers of the 48 conterminous United States, Hawaii, Puerto Ri"/><term thcode="1" code="fUS" name="United States" parent="fLD10" scope="country"/><term thcode="1" code="fLD10" name="North America" parent="fLD" scope="continent"/><term thcode="1" code="fLD" name="Land" parent="root" scope="continent"/><term thcode="1" code="root" name="Earth" scope="Common geographic areas focused on the US"/></bt><rt><term thcode="1" code="fUS01" name="Alabama" parent="fUS" scope="state"/><term thcode="1" code="q34086" name="Atlanta" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q40078" name="Baltimore" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q34088" name="Birmingham" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q38082" name="Bluefield" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q39080" name="Charlottesville" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1163" name="Chattahoochee National Forest" parent="p12" scope="National Forest"/><term thcode="1" code="q36086" name="Chattanooga" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1165" name="Cherokee National Forest" parent="p12" scope="National Forest"/><term thcode="1" code="q37086" name="Corbin" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q40080" name="Cumberland" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q35088" name="Gadsden" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1193" name="George Washington National Forest" parent="p12" scope="National Forest"/><term thcode="1" code="fUS13" name="Georgia" parent="fUS" scope="state"/><term thcode="1" code="q41078" name="Harrisburg" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1207" name="Jefferson National Forest" parent="p12" scope="National Forest"/><term thcode="1" code="q37084" name="Johnson City" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q36084" name="Knoxville" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="fUS24" name="Maryland" parent="fUS" scope="state"/><term thcode="1" code="fUS34" name="New Jersey" parent="fUS" scope="state"/><term thcode="1" code="q41076" name="Newark" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="fUS42" name="Pennsylvania" parent="fUS" scope="state"/><term thcode="1" code="q41080" name="Pittsburgh" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q38080" name="Roanoke" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q35086" name="Rome" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="ar500" name="Sandstone and carbonate-rock aquifers" parent="art" scope="aquifer rock type"/><term thcode="1" code="q42076" name="Scranton" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1501" name="Shenandoah National Park" parent="p18" scope="National Park"/><term thcode="1" code="fUS47" name="Tennessee" parent="fUS" scope="state"/><term thcode="1" code="fUS51" name="Virginia" parent="fUS" scope="state"/><term thcode="1" code="fUS54" name="West Virginia" parent="fUS" scope="state"/><term thcode="1" code="q42078" name="Williamsport" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q37082" name="Winston-salem" parent="qroot" scope="quadrangle 1:250,000 scale"/></rt></descriptor>