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Date: 2011-09-13 09:05:51Volcanology Cornubian batholith Geology of Devon Granite Porphyritic Phenocryst Igneous rock Matrix Porphyry Petrology Igneous petrology Volcanic rocks | Add to Reading ListSource URL: www.ussher.org.ukDownload Document from Source WebsiteFile Size: 658,01 KBShare Document on Facebook |