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January 1, 1977

Aeromagnetic map of Virginia

No abstract available.

January 1, 1977

Arability map of the Tucson area, Arizona

No abstract available.

January 1, 1977

Bedrock geologic map of Kentucky River Area Development District and vicinity, eastern Kentucky

No abstract available.

January 1, 1977

Bedrock geologic map of the Holliston and Medfield quadrangles, Middlesex, Norfolk, and Worcester counties, Massachusetts

No abstract available.

January 1, 1977

Bedrock geologic map of the southern part of the Diorite and Champion 7 1/2 minute quadrangles, Marquette County, Michigan

This map illustrates the bedrock geology of part of the Marquette iron range in the Diorite and Champion 7 ½-minute quadrangles. The area includes part of the Marquette trough, a synclinorium containing rocks of the Marquette Range Supergroup (Precambrian X) and older Precambrian W basement gneiss. Among the Precambrian X rocks is the economically important banded iron-formation, and the oldest ro

Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

January 1, 1977