LEADER 02235oam  2200589   450 
001 9910709681303321
005 20180523095128.0
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035   $a(EXLCZ)995470000002471420
100   $a20141123d1980      ua             0
101 0 $aeng
135   $aurmn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aAlkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado /$fby Jerry C. Olson and David C. Hedlund
210  1$aWashington :$cUnited States Department of the Interior, Geological Survey,$d1981.
215   $a1 online resource (iv, 34 pages) $cillustrations, maps
225 1 $aGeological Survey professional paper ;$v1049-C
225 1 $aGeology and resources of thorium in the United States
300   $aTitle from title screen (viewed October 14, 2014).
300   $a"An evaluation of thorium resources, their distribution, and geologic relationships."
320   $aIncludes bibliographical references (pages 33-34).
606   $aAlkalic igneous rocks
606   $aIntrusions (Geology)$zColorado$zGunnison County
606   $aThorium ores$zColorado$zGunnison County
606   $aGeology$zColorado$zGunnison County
606   $aAlkalic igneous rocks$2fast
606   $aIntrusions (Geology)$2fast
606   $aThorium ores$2fast
607   $aColorado$zGunnison County$2fast
615  0$aAlkalic igneous rocks.
615  0$aIntrusions (Geology)
615  0$aThorium ores
615  0$aGeology
615  7$aAlkalic igneous rocks.
615  7$aIntrusions (Geology)
615  7$aThorium ores.
700   $aOlson$b J. C$g(Jerry Chipman),$f1917-2013,$01392464
702   $aHedlund$b David Carl$f1924-
712 02$aGeological Survey (U.S.),
801  0$bCOP
801  1$bCOP
801  2$bOCLCO
801  2$bOCLCF
801  2$bGPO
906   $aBOOK
912   $a9910709681303321
996   $aAlkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado$93447183
997   $aUNINA