LEADER 01374oam  2200397   450 
001 9910703403803321
005 20150122124141.0
035   $a(CKB)5470000002431658
035   $a(OCoLC)900215677
035   $a(EXLCZ)995470000002431658
100   $a20150115d1999      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $2rdacontent
182   $2rdamedia
183   $2rdacarrier
200 10$a40Ar/39 Ar age-spectrum data for amphibole, muscovite, biotite, and K-feldspar samples from metamorphic rocks in the Blue Ridge anticlinorium, northern Virginia /$fby Michael J. Kunk and William C. Burton
210  1$a[Reston, Va.?] :$cU.S. Geological Survey,$d1999.
215   $a1 online resource (111 pages) $cillustrations
225 1 $aOpen-file report ;$v99-552
300   $aTitle from title screen (viewed on Jan. 14, 2015).
320   $aIncludes bibliographical references (pages 110-111).
606   $aPotassium-argon dating
606   $aMetamorphic rocks$zVirginia
615  0$aPotassium-argon dating.
615  0$aMetamorphic rocks
700   $aKunk$b Michael J.$01384281
702   $aBurton$b William C$g(William Chapin),$f1952-
712 02$aGeological Survey (U.S.),
801  0$bGPO
801  1$bGPO
801  2$bGPO
906   $aBOOK
912   $a9910703403803321
996   $a40Ar$93439666
997   $aUNINA