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100   $a20040826d2004      ua             0
101 0 $aeng
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181   $ctxt$2rdacontent
182   $cc$2rdamedia
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200 10$aPreliminary ??Ar/³?Ar geochronology of igneous intrusions from Uvalde County, Texas$b[electronic resource] $edefining a more precise eruption history for the southern Balcones Volcanic Province /$fby Daniel P. Miggins, Charles D. Blome, and David V. Smith
205   $aVersion 1.0.
210  1$a[Reston, Va.] :$cU.S Dept. of the Interior, U.S. Geological Survey,$d2004.
225 1 $aU.S. Geological Survey open-file report ;$v2004-1031
300   $aTitle from PDF title screen (viewed on Aug. 26, 2004).
320   $aIncludes bibliographical references.
517   $aPreliminary ??Ar/³?Ar geochronology of igneous intrusions from Uvalde County, Texas 
606   $aIntrusions (Geology)$zTexas$zUvalde County
606   $aArgon-argon dating$zTexas$zUvalde County
615  0$aIntrusions (Geology)
615  0$aArgon-argon dating
700   $aMiggins$b Daniel P$01385069
701   $aBlome$b Charles D$01385070
701   $aSmith$b David V$0148124
712 02$aGeological Survey (U.S.)
801  0$bGIS
801  1$bGIS
801  2$bGPO
906   $aBOOK
912   $a9910693076403321
996   $aPreliminary ??Ar$93432150
997   $aUNINA