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![]() Date: 2010-08-24 14:56:08Cratons Metamorphic rocks Historical geology Superior craton Amphibolite Gneiss Isograd Staurolite Metamorphism Geology Metamorphic petrology Structural geology | Source URL: globalchange.umich.eduDownload Document from Source WebsiteFile Size: 2,34 MBShare Document on Facebook |