Browsing Guidebooks - Indiana Geol. Survey by Subject "Blue River Group"

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  • Mallot, Clyde A.; Esarey, Ralph E.; Bieberman, Doris F. (Indiana Division of Geology, 1948-05)
    This field trip was organized to observe and discuss outcrop of Upper and Middle Mississippian age in Indiana. These formations are of special economic interest because the greater part of petroleum, agricultural limestone, ...

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