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RT @AZGeology: Spectacular new geologic map and report for the Spirit Mtn SE/NE quads, Nevada and Arizona, by Kyle House & Co. (@USGSAZ & A…
RT @AZGeology: Spectacular new geologic map and report for the Spirit Mtn SE/NE quads, Nevada and Arizona, by Kyle House & Co. (@USGSAZ & A…
RT @AZGeology: Spectacular new geologic map and report for the Spirit Mtn SE/NE quads, Nevada and Arizona, by Kyle House & Co. (@USGSAZ & A…
RT @AZGeology: Spectacular new geologic map and report for the Spirit Mtn SE/NE quads, Nevada and Arizona, by Kyle House & Co. (@USGSAZ & A…