Cambrian System

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Read about the Cambrian System
Trempealeauan StageFranconian StageSauk SequenceDresbachian StageKnox Dolomite MegagroupPotsdam Sandstone MegagroupJordan SandstoneMomence Sandstone MemberPotosi DolomiteFranconia FormationDerby-Doerun MemberDavis MemberEminence FormationIronton SandstoneMooseheart MemberMarywood MemberFox Valley MemberBuelter MemberGalesville SandstoneEau Claire FormationProviso Siltstone MemberLombard Dolomite MemberElmhurst Sandstone MemberMt. Simon SandstoneCharter MemberGunn MemberLacey MemberMayfield MemberLovell MemberKenyon MemberCrane MemberFigure C-3 imagemap.jpg
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Stratigraphic column is from ISGS Bulletin 95 (1975).
Cambrian System
  1. Sauk Sequence
  2. Knox Dolomite Megagroup
  3. Cambrian System
  4. Croixan Series
  5. Trempealeauan Stage
  6. Eminence Formation
  7. Jordan Sandstone
  8. Momence Sandstone Member
  9. Potosi Dolomite
  10. Franconian Stage
  11. Derby-Doerun Member
  12. Potsdam Sandstone Megagroup
  13. Franconia Formation
  14. Davis Member
  15. Ironton Sandstone
  16. Mooseheart Member
  17. Marywood Member
  18. Fox Valley Member
  19. Buelter Member
  20. Dresbachian Stage
  21. Galesville Sandstone
  22. Eau Claire Formation
  23. Proviso Siltstone Member
  24. Lombard Dolomite Member
  25. Elmhurst Sandstone Member
  26. Mt. Simon Sandstone
  27. Charter Member
  28. Gunn Member
  29. Lacey Member
  30. Mayfield Member
  31. Lovell Member
  32. Kenyon Member
  33. Crane Member
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