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  • Offerman Member
    |tree3=Offerman Member ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.
    2 KB (306 words) - 20:13, 11 January 2017
  • Troutman Member
    |tree3=Troutman Member ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.
    2 KB (317 words) - 20:12, 11 January 2017
  • Search:Silurian System
    rect 200 500 390 549 [[Romeo_Member|Romeo Member]] rect 200 551 390 584 [[Markgraf_Member|Markgraf Member]]
    4 KB (368 words) - 14:52, 30 March 2020
  • Kankakee Formation
    ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p. ...the Niagaran Series, but there is slight if any truncation of the Plaines Member, which is only 2-3 feet thick, and the surface is more likely a corrosion s
    6 KB (906 words) - 20:09, 11 January 2017
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