National Geologic Map Database
General Information
- Title: The geology of the Upper Mississippi Valley zinc-lead district
- Author(s): Heyl, A.V., Agnew, A.F., Lyons, E.J., Behre, C.H., and Flint, A.E.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Professional Paper 309
- Publication Date: 1959
- Map Scale: 1:126,720
- Cross Section: Yes
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- Links and Downloads:
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.