<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="a109" name="Mississippi River Valley alluvial aquifer" 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="q32094" name="Alexandria" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="fUS05" name="Arkansas" parent="fUS" scope="state"/><term thcode="1" code="p1619" name="Bald Knob National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="p1633" name="Big Lake National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="p1639" name="Black Bayou Lake National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="q36090" name="Blytheville" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1661" name="Cache River National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="p1680" name="Chickasaw National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="p1702" name="Cypress Creek National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="p1703" name="D'Arbonne National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="p1704" name="Dahomey National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="p1182" name="Delta National Forest" parent="p12" scope="National Forest"/><term thcode="1" code="q37090" name="Dyersburg" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q34094" name="El Dorado" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1725" name="Felsenthal National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="q34092" name="Greenwood" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q35092" name="Helena" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1759" name="Hillside National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="fUS17" name="Illinois" parent="fUS" scope="state"/><term thcode="1" code="q33092" name="Jackson" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="fUS21" name="Kentucky" parent="fUS" scope="state"/><term thcode="1" code="p1803" name="Lake Isom 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="fUS22" name="Louisiana" parent="fUS" scope="state"/><term thcode="1" code="p1828" name="Lower Hatchie National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="p1221" name="Mark Twain National Forest" parent="p12" scope="National Forest"/><term thcode="1" code="p1847" name="Mathews Brake National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="q36092" name="Memphis" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="fUS28" name="Mississippi" parent="fUS" scope="state"/><term thcode="1" code="fUS29" name="Missouri" parent="fUS" scope="state"/><term thcode="1" code="p1870" name="Morgan Brake National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="q32092" name="Natchez" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1894" name="Overflow National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="q38090" name="Paducah" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1900" name="Panther Swamp National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="q37092" name="Poplar Bluff" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1445" name="Poverty Point National Monument" parent="p28" scope="National Monument"/><term thcode="1" code="p1929" name="Reelfoot National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="q38092" name="Rolla" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p1254" name="Saint Francis National Forest" parent="p12" scope="National Forest"/><term thcode="1" code="p1267" name="Shawnee National Forest" parent="p12" scope="National Forest"/><term thcode="1" code="q33094" name="Shreveport" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="p2002" name="Tallahatchie National Wildlife Refuge (Bear Lake Unit)" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="p2003" name="Tallahatchie National Wildlife Refuge (Black Bayou Unit)" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="fUS47" name="Tennessee" parent="fUS" scope="state"/><term thcode="1" code="p2007" name="Tensas River National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="ar100" name="Unconsolidated sand and gravel aquifers" parent="art" scope="aquifer rock type"/><term thcode="1" code="p2029" name="Upper Ouachita National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="p2035" name="Wapanocca National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="p2043" name="White River National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/><term thcode="1" code="p2052" name="Yazoo National Wildlife Refuge" parent="p13" scope="National Wildlife Refuge"/></rt></descriptor>