National Geologic Map Database
Product Description Page
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Title: K-bentonites of the Ordovician Decorah Subgroup, upper Mississippi Valley; correlation by chemical fingerprinting
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Author(s): Kolata, D.R., Frost, J.K., and Huff, W.R.
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Publishing Organization: Illinois State Geological Survey
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Series and Number: Circular 537
- Publication Date: 1986
- Map Scale: 1:4,168,423
- Cross Section: Yes
- North Latitude: 44° 56' 54" N (44.9483)
- South Latitude: 37° 13' 58" N (37.2327)
- East Longitude: 89° 29' 26" W (-89.4906)
- West Longitude: 93° 12' 27" W (-93.2075)
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