<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="fUS42" name="Pennsylvania" parent="fUS" scope="state"/><bt><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><nt><term thcode="1" code="f42001" name="Adams" parent="fUS42" scope="county"/><term thcode="1" code="f42003" name="Allegheny" parent="fUS42" scope="county"/><term thcode="1" code="f42005" name="Armstrong" parent="fUS42" scope="county"/><term thcode="1" code="f42007" name="Beaver" parent="fUS42" scope="county"/><term thcode="1" code="f42009" name="Bedford" parent="fUS42" scope="county"/><term thcode="1" code="f42011" name="Berks" parent="fUS42" scope="county"/><term thcode="1" code="f42013" name="Blair" parent="fUS42" scope="county"/><term thcode="1" code="f42015" name="Bradford" parent="fUS42" scope="county"/><term thcode="1" code="f42017" name="Bucks" parent="fUS42" scope="county"/><term thcode="1" code="f42019" name="Butler" parent="fUS42" scope="county"/><term thcode="1" code="f42021" name="Cambria" parent="fUS42" scope="county"/><term thcode="1" code="f42023" name="Cameron" parent="fUS42" scope="county"/><term thcode="1" code="f42025" name="Carbon" parent="fUS42" scope="county"/><term thcode="1" code="f42027" name="Centre" parent="fUS42" scope="county"/><term thcode="1" code="f42029" name="Chester" parent="fUS42" scope="county"/><term thcode="1" code="f42031" name="Clarion" parent="fUS42" scope="county"/><term thcode="1" code="f42033" name="Clearfield" parent="fUS42" scope="county"/><term thcode="1" code="f42035" name="Clinton" parent="fUS42" scope="county"/><term thcode="1" code="f42037" name="Columbia" parent="fUS42" scope="county"/><term thcode="1" code="f42039" name="Crawford" parent="fUS42" scope="county"/><term thcode="1" code="f42041" name="Cumberland" parent="fUS42" scope="county"/><term thcode="1" code="f42043" name="Dauphin" parent="fUS42" scope="county"/><term thcode="1" code="f42045" name="Delaware" parent="fUS42" scope="county"/><term thcode="1" code="f42047" name="Elk" parent="fUS42" scope="county"/><term thcode="1" code="f42049" name="Erie" parent="fUS42" scope="county"/><term thcode="1" code="f42051" name="Fayette" parent="fUS42" scope="county"/><term thcode="1" code="f42053" name="Forest" parent="fUS42" scope="county"/><term thcode="1" code="f42055" name="Franklin" parent="fUS42" scope="county"/><term thcode="1" code="f42057" name="Fulton" parent="fUS42" scope="county"/><term thcode="1" code="f42059" name="Greene" parent="fUS42" scope="county"/><term thcode="1" code="f42061" name="Huntingdon" parent="fUS42" scope="county"/><term thcode="1" code="f42063" name="Indiana" parent="fUS42" scope="county"/><term thcode="1" code="f42065" name="Jefferson" parent="fUS42" scope="county"/><term thcode="1" code="f42067" name="Juniata" parent="fUS42" scope="county"/><term thcode="1" code="f42069" name="Lackawanna" parent="fUS42" scope="county"/><term thcode="1" code="f42071" name="Lancaster" parent="fUS42" scope="county"/><term thcode="1" code="f42073" name="Lawrence" parent="fUS42" scope="county"/><term thcode="1" code="f42075" name="Lebanon" parent="fUS42" scope="county"/><term thcode="1" code="f42077" name="Lehigh" parent="fUS42" scope="county"/><term thcode="1" code="f42079" name="Luzerne" parent="fUS42" scope="county"/><term thcode="1" code="f42081" name="Lycoming" parent="fUS42" scope="county"/><term thcode="1" code="f42083" name="McKean" parent="fUS42" scope="county"/><term thcode="1" code="f42085" name="Mercer" parent="fUS42" scope="county"/><term thcode="1" code="f42087" name="Mifflin" parent="fUS42" scope="county"/><term thcode="1" code="f42089" name="Monroe" parent="fUS42" scope="county"/><term thcode="1" code="f42091" name="Montgomery" parent="fUS42" scope="county"/><term thcode="1" code="f42093" name="Montour" parent="fUS42" scope="county"/><term thcode="1" code="f42095" name="Northampton" parent="fUS42" scope="county"/><term thcode="1" code="f42097" name="Northumberland" parent="fUS42" scope="county"/><term thcode="1" code="f42099" name="Perry" parent="fUS42" scope="county"/><term thcode="1" code="f42101" name="Philadelphia" parent="fUS42" scope="county"/><term thcode="1" code="f42103" name="Pike" parent="fUS42" scope="county"/><term thcode="1" code="f42105" name="Potter" parent="fUS42" scope="county"/><term thcode="1" code="f42107" name="Schuylkill" parent="fUS42" scope="county"/><term thcode="1" code="f42109" name="Snyder" parent="fUS42" scope="county"/><term thcode="1" code="f42111" name="Somerset" parent="fUS42" scope="county"/><term thcode="1" code="f42113" name="Sullivan" parent="fUS42" scope="county"/><term thcode="1" code="f42115" name="Susquehanna" parent="fUS42" scope="county"/><term thcode="1" code="f42117" name="Tioga" parent="fUS42" scope="county"/><term thcode="1" code="f42119" name="Union" parent="fUS42" scope="county"/><term thcode="1" code="f42121" name="Venango" parent="fUS42" scope="county"/><term thcode="1" code="f42123" name="Warren" parent="fUS42" scope="county"/><term thcode="1" code="f42125" name="Washington" parent="fUS42" scope="county"/><term thcode="1" code="f42127" name="Wayne" parent="fUS42" scope="county"/><term thcode="1" code="f42129" name="Westmoreland" parent="fUS42" scope="county"/><term thcode="1" code="f42131" name="Wyoming" parent="fUS42" scope="county"/><term thcode="1" code="f42133" name="York" parent="fUS42" scope="county"/></nt><rt><term thcode="1" code="h0501" name="Allegheny" parent="h05" scope="hydrologic subregion"/><term thcode="1" code="q40078" name="Baltimore" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q43080" name="Buffalo" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q41082" name="Canton" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q40082" name="Clarksburg" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q42082" name="Cleveland" 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="h0204" name="Delaware" parent="h02" scope="hydrologic subregion"/><term thcode="1" code="a308" name="Early Mesozoic basin aquifers" parent="aroot" scope="aquifer"/><term thcode="1" code="h0412" name="Eastern Lake Erie-Lake Erie" parent="h04" scope="hydrologic subregion"/><term thcode="1" code="q43078" name="Elmira" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q43082" name="Erie" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q41078" name="Harrisburg" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="a503" name="Mississippian aquifers" parent="aroot" scope="aquifer"/><term thcode="1" code="h0502" name="Monongahela" parent="h05" scope="hydrologic subregion"/><term thcode="1" code="a416" name="New York and New England carbonate-rock aquifers" parent="aroot" scope="aquifer"/><term thcode="1" code="q41076" name="Newark" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="a205" name="Northern Atlantic Coastal Plain aquifer system" parent="aroot" scope="aquifer"/><term thcode="1" code="a310" name="Pennsylvanian aquifers" parent="aroot" scope="aquifer"/><term thcode="1" code="a417" name="Piedmont and Blue Ridge carbonate-rock aquifers" parent="aroot" scope="aquifer"/><term thcode="1" code="a611" name="Piedmont and Blue Ridge crystalline-rock aquifers" parent="aroot" scope="aquifer"/><term thcode="1" code="q41080" name="Pittsburgh" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="h0207" name="Potomac" parent="h02" scope="hydrologic subregion"/><term thcode="1" code="q42076" name="Scranton" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="h0411" name="Southern Lake Erie" parent="h04" scope="hydrologic subregion"/><term thcode="1" code="h0413" name="Southwestern Lake Ontario" parent="h04" scope="hydrologic subregion"/><term thcode="1" code="h0205" name="Susquehanna" parent="h02" scope="hydrologic subregion"/><term thcode="1" code="h0206" name="Upper Chesapeake" parent="h02" scope="hydrologic subregion"/><term thcode="1" code="h0503" name="Upper Ohio" parent="h05" scope="hydrologic subregion"/><term thcode="1" code="a502" name="Valley and Ridge aquifers" parent="aroot" scope="aquifer"/><term thcode="1" code="a505" name="Valley and Ridge carbonate-rock aquifers" parent="aroot" scope="aquifer"/><term thcode="1" code="q42080" name="Warren" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q42078" name="Williamsport" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q40076" name="Wilmington" parent="qroot" scope="quadrangle 1:250,000 scale"/></rt></descriptor>