National Geologic Map Database
Product Description Page
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Title: Geology of volcanic rocks in the south half of the Ishpeming greenstone belt, Michigan
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Author(s): Bornhorst, T.J., and Johnson, R.C.
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Publishing Organization: U.S. Geological Survey
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Series and Number: Bulletin 1904-P
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Larger Work: Contributions to Precambrian geology of Lake Superior region
- Publication Date: 1993
- Map Scale: 1:217,000
- Cross Section: None
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