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Geology and zinc-lead deposits in the Couler Valley area, Dubuque County, Iowa

January 1, 1994

Geologic investigations were begun in the Iowa portion of the Wisconsin-Illinois-Iowa zinc-lead district to appraise its potentialities: (1) for zinc ore in strata that elsewhere in the mining district contain large zinc ore bodies and (2) for lead and zinc deposits of the type that were mined extensively in Dubuque County, Iowa, during the 19th century.

Citation Information

Publication Year 1955
Title Geology and zinc-lead deposits in the Couler Valley area, Dubuque County, Iowa
DOI 10.3133/mf42
Authors C. Erwin Brown, L.G. Collins, Percy Crosby
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Miscellaneous Field Studies Map
Series Number 42
Index ID mf42
Record Source USGS Publications Warehouse