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Date: 2012-10-26 17:37:54Stratigraphy Unconformity Proterozoic Moenkopi Formation Chinle Formation Geology of Spain Cryogenian Geology of the Death Valley area Geography of the United States Geology Historical geology | USGS Scientific Investigations Map 3227 sheet 3Add to Reading ListSource URL: pubs.usgs.govDownload Document from Source WebsiteFile Size: 3,54 MBShare Document on Facebook |