<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="a501" name="Edwards-Trinity aquifer system" 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="q33100" name="Abilene" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q35098" name="Ardmore" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="fUS05" name="Arkansas" parent="fUS" scope="state"/><term thcode="1" code="q31098" name="Austin" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1618" name="Balcones Canyonlands National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="q33102" name="Big Spring" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q32100" name="Brownwood" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q33098" name="Dallas" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q30102" name="Del Rio" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q30104" name="Emory Peak" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q31104" name="Fort Stockton" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q33104" name="Hobbs" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1822" name="Little River National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="q35094" name="Little Rock" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q31100" name="Llano" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1316" name="Lyndon B. Johnson National Grassland" parent="p36" scope="National Grassland"/><term thcode="1" code="q31106" name="Marfa" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q35096" name="Mcalester" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="fUS40" name="Oklahoma" parent="fUS" scope="state"/><term thcode="1" code="p1240" name="Ouachita National Forest" parent="p12" scope="National Forest"/><term thcode="1" code="q32104" name="Pecos" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q32102" name="San Angelo" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q30100" name="San Antonio" 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="q30098" name="Seguin" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q34098" name="Sherman" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q31102" name="Sonora" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q34096" name="Texarkana" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="fUS48" name="Texas" parent="fUS" scope="state"/><term thcode="1" code="p2013" name="Tishomingo National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="q32106" name="Van Horn" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q32098" name="Waco" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q34100" name="Wichita Falls" parent="qroot" scope="quadrangle 1:250,000 scale"/></rt></descriptor>