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Layers of white gypsum (product of evaporation during times of low sea level) alternate with richly colored red and green shales (when sea level was higher, depositing iron or copper rich sediments). The white veins in the shale are secondary gypsum, form | by killamator
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Layers of white gypsum (product of evaporation during times of low sea level) alternate with richly colored red and green shales (when sea level was higher, depositing iron or copper rich sediments). The white veins in the shale are secondary gypsum, form

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Uploaded on January 18, 2019