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Date: 2011-10-18 16:33:33 Cratons Geological history of Earth Geology of Greenland Hadean Isua greenstone belt Late Heavy Bombardment Archean Akilia Zircon Geology Historical geology Geologic time scale		doi:[removed]j.apgeochem[removed] Add to Reading List Source URL: www.geo.arizona.edu Download Document from Source Website File Size: 107,95 KB Share Document on Facebook

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