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Map Releases

Our programs produce accurate geologic maps and 3-D geologic frameworks that provide critical data for sustaining and improving the quality of life and economic vitality of the Nation. 

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Arabian Peninsula Arabian Peninsula

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Bedrock geology of the southwestern part of the North Range, Cuyuna district, Minnesota Bedrock geology of the southwestern part of the North Range, Cuyuna district, Minnesota

The Cuyuna manganiferous iron-ore district is in central Minnesota in Morrison, Crow Wing, and Aitkin Counties. The length of the district is about 68 miles, extending northeastward from a point near Randall, in Morrison County, to a point 11 miles east of the community of Hassmann in Aitkin County; the maximum known width is about 25 miles near the center of the district. Current mining
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