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  • |tree4=Harmony Hill Shale Member ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.
    3 KB (410 words) - 18:21, 12 January 2017
  • ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p. The Glenwood, a highly varied unit of sandstone, dolomite, and shale overlying the St. Peter Sandstone, is named for Glenwood Township, Winneshi
    5 KB (682 words) - 18:18, 12 January 2017
  • |tree4=Nokomis Sandstone Member ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.
    3 KB (337 words) - 18:26, 12 January 2017