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        lower Eocene
        
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- Paleozoic
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        Joana Limestone (1)
        
        Kayak Shale (1)
        
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        Lodgepole Formation (2)
        
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      - Upper Pennsylvanian
        
        Missourian
        
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        Virgilian
        
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        Wabamun Group (1)
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    - Lower Ordovician
      - Ellenburger Group (1)
    - Middle Ordovician
      - Black River Group (1)
      - Decorah Shale (1)
      - Galena Dolomite (1)
      - Glenwood Shale (1)
      - Platteville Formation (1)
      - Saint Peter Sandstone (1)
    - Trenton Group (2)
    - Upper Ordovician
      - Ashgillian (2)
      - Caradocian (3)
      - Hirnantian (2)
      - Maquoketa Formation (1)
      - Red River Formation (1)
      - Trentonian (2)
      - Yeoman Formation (1)
    - Utica Shale (1)
    - Vinini Formation (1)
    - Viola Limestone (1)
  - Permian
    - Echooka Formation (1)
    - Guadalupian
      - Brushy Canyon Formation (1)
      - Cherry Canyon Formation (1)
    - Lower Permian
      - Cherry Canyon Formation (1)
      - Leonardian
        
        Bone Spring Limestone (1)
      - Wolfcampian (1)
    - Lyons Sandstone (1)
    - Meade Peak Member (1)
    - Phosphoria Formation (4)
    - Rotliegendes (1)
    - Upper Permian
      - Lopingian
        
        Changhsingian (1)
      - Permian-Triassic boundary (6)
    - Wellington Formation (3)
  - Silurian
    - Lockport Formation (1)
    - Lower Silurian
      - Llandovery (1)
      - Qalibah Formation (1)
      - Wenlock (2)
    - Middle Silurian
      - Clinton Group (1)
      - Roberts Mountains Formation (1)
      - Rochester Formation (1)
    - Niagaran (1)
    - Upper Silurian
      - Ludlow (1)
      - Pridoli (1)
      - Salina Group (1)
  - upper Paleozoic
    - Bakken Formation (6)
    - Kaskaskia Sequence (1)
  - Woodford Shale (4)
- Phanerozoic (19)
- Precambrian
  - Animikie Group (1)
  - Archean
    - Neoarchean (4)
    - Paleoarchean (1)
    - Warrawoona Group (1)
  - Biwabik Iron Formation (1)
  - Chuar Group (1)
  - Fortescue Group (1)
  - Gunflint Iron Formation (1)
  - Nonesuch Shale (1)
  - Transvaal Supergroup (4)
  - Uinta Mountain Group (1)
  - upper Precambrian
    - Proterozoic
      - Great Oxidation Event (1)
      - Lewisian (1)
      - Mesoproterozoic
        
        Roper Group (3)
      - Neoproterozoic
        
        Cryogenian (1)
        
        Doushantuo Formation (4)
        
        Ediacaran
        
        Wonoka Formation (2)
        
        Maranon Complex (1)
        
        Riphean
        
        upper Riphean (2)
        
        Sturtian (1)
        
        Torridonian (1)
        
        upper Sinian (1)
        
        Vendian (3)
      - Paleoproterozoic
        
        Francevillian (2)
        
        Urquhart Shale (1)
        
        Virginia Formation (1)
      - Pretoria Group (1)
      - Sinian
        
        Doushantuo Formation (4)
        
        upper Sinian (1)
igneous rocks
- igneous rocks
  - kimberlite (2)
  - plutonic rocks