02122oam 2200577 450 991070712260332120160511164142.0(CKB)5470000002462275(OCoLC)937435783(OCoLC)889600878(EXLCZ)99547000000246227520160208d1991 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierArchean geology of the northern block of the Ishpeming Greenstone Belt, Marquette County, Michigan /by R.C. Johnson and T.J. Bornhorst[Reston, Va.] :U.S. Department of the Interior, U.S. Geological Survey,1991.[Washington, D.C.] :United States Government Printing Office.1 online resource (iv, 20 pages) illustrations, mapsContributions to Precambrian geology of Lake Superior region ;ch. FU.S. Geological Survey bulletin ;1904-FTitle from title screen (viewed May 11, 2016).Includes bibliographical references (pages 19-20).Geology, StratigraphicArchaeanIgneous rocksMichiganMarquette CountyGeologyMichiganMarquette CountyArchaean Geologic PeriodfastGeologyfastGeology, StratigraphicfastIgneous rocksfastMichiganMarquette CountyfastGeology, StratigraphicIgneous rocksGeologyArchaean Geologic Period.Geology.Geology, Stratigraphic.Igneous rocks.Johnson R. C(Rodney C.),1404720Bornhorst Theodore J.Geological Survey (U.S.),OCLCEOCLCECOPOCLCFGPOBOOK9910707122603321Archean geology of the northern block of the Ishpeming Greenstone Belt, Marquette County, Michigan3479839UNINA