National Geologic Map Database
General Information
- Title: Lower Keweenawan volcanic rocks of Michigan and Wisconsin
- Author(s): Hubbard, H.A.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Journal of Research of the U.S. Geological Survey v. 3, no. 5, p.529-541.
- Publication Date: 1975
- Map Scale: 1:62,500
- Cross Section: Yes
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Geologic units referred to in Geolex
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- U.S. Geological Survey
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.