Browsing Bulletins - Indiana Geol. Survey by Author "Thornbury, William D."

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  • Thornbury, William D.; Deane, Harold L. (Indiana Geological Survey, 1955)
    Most of the geomorphic features of Miami County are of glacial origin or are glacial deposits that were modified by postglacial erosion. Three major and nine smaller valleys were sluiceways for glacial melt waters. The ...
  • Wayne, William J.; Thornbury, William D. (Indiana Geological Survey, 1951)
    Most of the topographic features of Wabash County are of glacial origin or are glacial deposits eroded by postglacial streams. Shales, limestones, and dolomites, all Silurian, are exposed only along some of the deeper ...
  • Thornbury, William D. (Indiana Division of Geology, 1950)
    Lacustrine plains of two distinct ages and origins occur in southern Indiana. One system of lakes of Illinoian age developed as marginal lakes because of the ponding of the southwest drainage by the lobe of Illinoian ice ...

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