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  - lead
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    - Pb-207 (1)
    - Pb-207/Pb-204 (17)
    - Pb-207/Pb-206 (7)
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- oxygen
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- selenium (1)
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- trace metals (7)
fossils
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geochronology methods
- (U-Th)/He (3)
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geologic age
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        Younger Dryas (1)
  - Tertiary
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        Columbia River Basalt Group (1)
        
        middle Miocene (2)
        
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    - Paleogene
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        lower Eocene (2)
        
        middle Eocene
        
        Lutetian (1)
        
        Ootsa Lake Group (1)
      - lower Paleogene (1)
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        upper Oligocene (1)
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        upper Paleocene
        
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- Mesozoic
  - Cretaceous
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    - Lower Cretaceous
      - Albian (4)
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      - Hauterivian (1)
      - Valanginian (1)
    - Lower Greensand (1)
    - Mancos Shale (1)
    - Nenjiang Formation (1)
    - Qingshankou Formation (1)
    - Upper Cretaceous
      - Cenomanian (2)
      - Gulfian
        
        Eagle Ford Formation (1)
      - K-T boundary (1)
      - Niobrara Formation (1)
      - Turonian (1)
  - Jurassic
    - Lower Jurassic (5)
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      - Aalenian (1)
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    - Upper Jurassic
      - Tithonian (1)
  - lower Mesozoic (1)
  - Triassic
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      - Permian-Triassic boundary (4)
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  - upper Mesozoic (1)
- Paleozoic
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        Visean (2)
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        Hartselle Sandstone (1)
        
        Serpukhovian (1)
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        Bashkirian (1)
        
        Haymond Formation (1)
      - Middle Pennsylvanian
        
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        Wescogame Formation (1)
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    - Upper Carboniferous
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  - lower Paleozoic (9)
  - Ordovician
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    - Upper Ordovician
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      - Sandbian (1)
    - Valmy Formation (1)
  - Permian
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    - Guadalupian (1)
    - Kaibab Formation (1)
    - Lower Permian
      - Leonardian
        
        Bone Spring Limestone (1)
      - Qixia Formation (1)
      - Wolfcampian (1)
    - Maokou Formation (2)
    - Phosphoria Formation (1)
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    - Upper Permian
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      - Permian-Triassic boundary (4)
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- Precambrian
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  - upper Precambrian
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      - Mesoproterozoic
        
        Laxfordian (1)
        
        Stenian (1)
      - Neoproterozoic
        
        Cryogenian (1)
        
        Doushantuo Formation (1)
        
        Ediacaran
        
        Wonoka Formation (1)
        
        Maranon Complex (1)
        
        Tonian (3)
        
        Vendian (1)
      - Paleoproterozoic
        
        Birimian (1)
        
        Qinling Group (1)
        
        Rhyacian (1)
      - Pretoria Group (1)
      - Sinian
        
        Doushantuo Formation (1)
        
        Xiong'er Group (1)
  - Ventersdorp Supergroup (1)
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igneous rocks
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        enderbite (1)
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    - pegmatite (6)
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    - syenites
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      - granosyenite (1)
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    - ultramafics
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      - peridotites
        
        dunite (2)
      - pyroxenite
        
        clinopyroxenite (1)
        
        websterite (2)
  - volcanic rocks
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metamorphic rocks
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- metamorphic rocks
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  - metasomatic rocks
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  - metavolcanic rocks (2)
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meteorites
- meteorites
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      - Martian meteorites
        
        SNC Meteorites
        
        chassignite
        
        Chassigny Meteorite (1)
        
        shergottite (1)
    - chondrites
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        Tagish Lake Meteorite (1)
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        H chondrites
        
        Tieschitz Meteorite (1)
minerals
- alloys
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- arsenides
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- carbonates
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- halides
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- manganese minerals (1)
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- minerals (6)
- native elements
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- oxides
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  - hydroxides
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  - magnetite (2)
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    - columbite (1)
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- phosphates
  - apatite (17)
  - beraunite (1)
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- platinum minerals (3)
- silicates
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  - chain silicates
    - amphibole group
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        hornblende (2)
    - pyroxene group
      - clinopyroxene
        
        hedenbergite (1)
      - orthopyroxene (4)
  - framework silicates
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    - feldspar group
      - alkali feldspar
        
        adularia (5)
        
        K-feldspar (5)
        
        sanidine (1)
      - barium feldspar
        
        paracelsian (1)
      - plagioclase
        
        anorthite (1)
    - silica minerals
      - agate (1)
      - chalcedony (1)
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      - quartz (5)
  - orthosilicates
    - nesosilicates
      - garnet group
        
        andradite (1)
      - kasolite (1)
      - larnite (1)
      - merwinite (1)
      - mullite (1)
      - olivine group
        
        fayalite (1)
        
        monticellite (1)
        
        olivine (3)
      - titanite group
        
        titanite (5)
      - topaz (1)
      - zircon group
        
        zircon (86)
    - sorosilicates
      - epidote group
        
        epidote (1)
      - melilite group
        
        gehlenite (1)
  - ring silicates
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  - sheet silicates
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      - chlorite (2)
    - clay minerals
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    - hydrobiotite (1)
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    - mica group
      - biotite (6)
      - glauconite (1)
      - muscovite (3)
    - pyrophyllite (1)
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    - serpentine group
      - berthierine (1)
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- sulfates
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  - barite (5)
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- sulfides
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  - cinnabar (3)
  - cooperite (1)
  - copper sulfides (2)
  - covellite (1)
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  - gersdorffite (1)
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  - iron sulfides (1)
  - kesterite (1)
  - mackinawite (2)
  - marcasite (1)
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  - millerite (2)
  - molybdenite (3)
  - pentlandite (2)
  - pyrite (15)
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  - sinnerite (1)
  - sphalerite (6)
  - stibnite (2)
  - tochilinite (1)
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- sulfosalts
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    - stannite (1)
- tellurides (4)
- tungstates
  - scheelite (2)
- uranium minerals (2)
Primary terms
- absolute age (130)
- Africa
  - Central Africa
    - Gabon (1)
  - East Africa
    - Afar Depression (1)
    - Ethiopia (2)
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  - North Africa
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        Anti-Atlas (3)
        
        High Atlas (1)
    - Morocco
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        Anti-Atlas (3)
        
        High Atlas (1)
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  - Southern Africa
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    - Namibia
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    - South Africa
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      - KwaZulu-Natal South Africa (1)
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      - Mpumalanga South Africa
        
        Barberton Mountain Land (1)
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  - West Africa
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- Antarctica
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- Arctic Ocean
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- Arctic region
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  - Russian Arctic
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- Asia
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  - Central Asia
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        Semipalatinsk Kazakhstan (1)
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  - Far East
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      - Heilongjiang China
        
        Xiao Hinggan Ling (1)
      - Henan China (1)
      - Hubei China (1)
      - Inner Mongolia China (1)
      - Jiangxi China (2)
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      - Kunlun Mountains (1)
      - Macau (1)
      - Nanling (1)
      - North China Platform (7)
      - Qinling Mountains (2)
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      - South China Block (8)
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      - Xinjiang China
        
        Junggar (1)
        
        Junggar Basin (1)
        
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      - Xizang China
        
        Gangdese Belt (2)
        
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  - Himalayas
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  - Indian Peninsula
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        Western Ghats (1)
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      - Northeastern India
        
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  - Indus-Yarlung Zangbo suture zone (3)
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  - Middle East
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- Atlantic Ocean
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- atmosphere (4)
- Australasia
  - Australia
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