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geologic age
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  - Tertiary
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        Barstow Formation (4)
        
        Columbia River Basalt Group (7)
        
        Ellensburg Formation (4)
        
        Grande Ronde Basalt (2)
        
        lower Miocene
        
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        middle Miocene
        
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        Picture Gorge Basalt (2)
        
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        upper Miocene
        
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        lower Eocene
        
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        middle Eocene
        
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        upper Eocene
        
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        lower Oligocene
        
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- Paleozoic
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        Atokan
        
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        Kanawha Formation (1)
      - Upper Pennsylvanian
        
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        Missourian
        
        Rock Lake Shale Member (1)
        
        Stanton Formation (1)
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  - Ordovician
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        Halifax Formation (1)
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    - Miramichi Group (1)
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    - Upper Ordovician
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        Borrowdale Volcanic Group (2)
      - Cincinnatian
        
        Richmondian (1)
      - Juniata Formation (1)
    - Wild Bight Group (2)
  - Permian
    - Ecca Group (2)
    - Guadalupian (1)
    - Lower Permian
      - Cisuralian
        
        Artinskian (1)
    - McCloud Limestone (3)
    - Middle Permian (1)
    - Rio Bonito Formation (1)
    - Rotliegendes (1)
    - Upper Permian
      - Lopingian (1)
      - Permian-Triassic boundary (4)
  - Shoo Fly Complex (1)
  - Silurian
    - Lower Silurian
      - Llandovery (1)
      - Wenlock (2)
    - Upper Silurian (1)
  - Tippecanoe Sequence (1)
  - upper Paleozoic
    - Sicker Group (1)
- Phanerozoic (1)
- Precambrian
  - Archean
    - Amisk Group (3)
    - Blake River Group (3)
    - Bulawayan Group (2)
    - Kromberg Formation (1)
    - Mesoarchean (2)
    - Neoarchean (7)
    - Paleoarchean
      - Hooggenoeg Formation (1)
    - Warrawoona Group (2)
  - Gunflint Iron Formation (1)
  - middle Precambrian (1)
  - Missi Group (2)
  - Onverwacht Group (1)
  - Pongola Supergroup (1)
  - Prince Albert Group (1)
  - Sokoman Formation (1)
  - Transvaal Supergroup (2)
  - Unkar Group (1)
  - upper Precambrian
    - Proterozoic
      - Coldbrook Group (1)
      - Keweenawan (1)
      - Mesoproterozoic
        
        Belt Supergroup (1)
      - Neoproterozoic
        
        Cryogenian (2)
        
        Doushantuo Formation (2)
        
        Ediacaran (5)
        
        Hadrynian
        
        George River Group (1)
        
        Infracambrian (1)
        
        Marinoan (3)
        
        Nantuo Formation (1)
        
        Otavi Group (1)
        
        Sturtian (1)
        
        Torridonian (2)
        
        Vendian (4)
      - Oronto Group (1)
      - Paleoproterozoic
        
        Birimian (3)
        
        Karelian (1)
        
        Rooiberg Group (1)
      - Pocatello Formation (2)
      - Pretoria Group (1)
      - Sinian
        
        Doushantuo Formation (2)
        
        Nantuo Formation (1)
  - Ventersdorp Supergroup (3)
  - Witwatersrand Supergroup (1)
igneous rocks
- extrusive rocks (2)
- igneous rocks
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  - hypabyssal rocks (6)
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      - tonalite (2)
      - trondhjemite (1)
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    - monzonites (1)
    - quartz monzonite (1)
    - sovite (1)
    - syenites
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      - pyroxenite (3)
  - porphyry
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  - volcanic rocks
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      - flood basalts (11)
      - mid-ocean ridge basalts (8)
      - ocean-island basalts (1)
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      - tholeiite (6)
      - tholeiitic basalt (3)
    - basanite (1)
    - dacites (8)
    - glasses
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      - volcanic glass (15)
    - keratophyre (1)
    - nephelinite (3