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RT @AZGeology: Cross section from Hopi Buttes east to Wide Ruin Wash in northern Arizona. "Preliminary bedrock and surficial geologic map o…
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RT @AZGeology: Cross section from Hopi Buttes east to Wide Ruin Wash in northern Arizona. "Preliminary bedrock and surficial geologic map o…
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RT @AZGeology: Cross section from Hopi Buttes east to Wide Ruin Wash in northern Arizona. "Preliminary bedrock and surficial geologic map o…