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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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        Fish Canyon Tuff (1)
        
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        lower Oligocene
        
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        upper Oligocene
        
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        Vicksburg Group (2)
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        Clayton Formation (1)
        
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        lower Paleocene
        
        Danian (13)
        
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        middle Paleocene
        
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        upper Paleocene
        
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        lower Albian (1)
        
        upper Albian (2)
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        Dinosaur Park Formation (1)
        
        upper Campanian (2)
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        upper Cenomanian (1)
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      - Gulfian
        
        Aguja Formation (1)
        
        Austin Chalk (2)
        
        Austin Group (1)
        
        Eagle Ford Formation (8)
        
        Navarro Group (1)
        
        Woodbine Formation (1)
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      - K-T boundary (8)
      - La Luna Formation (2)
      - Lance Formation (2)
      - Lewis Shale (2)
      - Maestrichtian
        
        upper Maestrichtian (1)
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      - Pierre Shale (4)
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      - Straight Cliffs Formation (8)
      - Turonian
        
        lower Turonian (1)
        
        upper Turonian (1)
      - Tuscaloosa Formation (8)
      - Vivian Formation (1)
  - Franciscan Complex (6)
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  - Jurassic
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    - Kingak Shale (2)
    - Lower Jurassic
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      - Nordegg Member (1)
      - Pliensbachian (13)
      - Portland Formation (1)
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      - Toarcian
        
        lower Toarcian (2)
      - Triassic-Jurassic boundary (2)
      - upper Liassic (6)
    - Middle Jurassic
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      - Bajocian
        
        Brent Group (5)
        
        Broom Formation (2)
        
        Etive Formation (2)
        
        Ness Formation (3)
        
        Rannoch Formation (3)
      - Bathonian (5)
      - Callovian (13)
      - Dogger (1)
    - Norphlet Formation (4)
    - Oxford Clay (2)
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    - Upper Jurassic
      - Arab Formation (2)
      - Bossier Formation (2)
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      - Entrada Sandstone (2)
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      - Galice Formation (1)
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      - Haynesville Formation (7)
      - Josephine Ophiolite (1)
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      - Kimmeridgian
        
        lower Kimmeridgian (2)
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        middle Oxfordian (2)
        
        upper Oxfordian (1)
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      - Smackover Formation (6)
      - Sundance Formation (2)
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      - Tithonian (9)
      - Volgian (1)
  - Navajo Sandstone (4)
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  - Triassic
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    - Lower Triassic
      - Bunter
        
        Voltzia Sandstone (1)
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      - Smithian (1)
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    - Middle Triassic
      - Anisian (2)
      - Doig Formation (5)
      - Ladinian (2)
      - Muschelkalk (4)
    - Montney Formation (3)
    - Sherwood Sandstone (2)
    - Shublik Formation (2)
    - Upper Triassic
      - Baldonnel Formation (2)
      - Carnian (6)
      - Chinle Formation (1)
      - Keuper (3)
      - Norian (3)
      - Pardonet Formation (2)
      - Rhaetian
        
        Penarth Group (1)
      - Triassic-Jurassic boundary (2)
      - Yanchang Formation (1)
  - upper Mesozoic (6)
  - Vaca Muerta Formation (2)
  - Wingate Sandstone (1)
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- MIS 2 (2)
- MIS 3 (2)
- MIS 6 (1)
- Moldanubian (1)
- Paleozoic
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  - Cambrian
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    - Lower Cambrian
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    - Middle Cambrian
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    - Upper Cambrian
      - Eau Claire Formation (2)
      - Mount Simon Sandstone (2)
      - Pilgrim Formation (1)
      - Potsdam Sandstone (2)
  - Carboniferous
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      - Chainman Shale (1)
      - Leadville Formation (1)
      - Lower Mississippian
        
        Cuyahoga Formation (3)
        
        Fort Payne Formation (2)
        
        Kayak Shale (2)
        
        Kinderhookian
        
        Banff Formation (1)
        
        Lodgepole Formation (6)
        
        Osagian
        
        Burlington Limestone (5)
        
        Keokuk Limestone (1)
        
        Tournaisian
        
        upper Tournaisian (1)
      - Madison Group (4)
      - Middle Mississippian
        
        Visean
        
        upper Visean (1)
      - Mission Canyon Limestone (3)
      - Upper Mississippian
        
        Hartselle Sandstone (1)
        
        Serpukhovian (5)
      - Windsor Group (1)
    - Namurian (9)
    - Pennsylvanian
      - Francis Creek Shale (1)
      - Joggins Formation (1)
      - Lower Pennsylvanian
        
        Bashkirian (2)
        
        Morrowan (1)
      - Middle Pennsylvanian
        
        Allegheny Group (1)
        
        Desmoinesian
        
        Cherokee Group (1)
        
        Moscovian (2)
        
        Paradox Formation (1)
      - Morien Group (1)
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      - Upper Pennsylvanian
        
        Gzhelian (1)
        
        Missourian (3)
        
        Virgilian
        
        Wabaunsee Group (1)
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  - Catskill Formation (1)
  - Deadwood Formation (1)
  - Devonian
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      - Manlius Formation (1)
      - Oriskany Sandstone (2)
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    - Middle Devonian
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      - Mahantango Formation (1)
      - Marcellus Shale (4)
      - Nahanni Formation (1)
      - Onondaga Limestone (2)
      - Winnipegosis Formation (1)
    - Old Red Sandstone (1)
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    - Upper Devonian
      - Famennian
        
        lower Famennian (1)
        
        upper Famennian (2)
        
        Wabamun Group (2)
      - Frasnian
        
        Leduc Formation (3)
        
        upper Frasnian (1)
      - Jefferson Group (1)
      - Kanayut Conglomerate (1)
      - Palliser Formation (1)
    - Waterways Formation (1)
  - Earn Group (1)
  - Exshaw Formation (3)
  - Helderberg Group (1)
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  - Keyser Limestone (2)
  - Knox Group (1)
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  - lower Paleozoic
    - Ashe Formation (1)
    - Cape Phillips Formation (1)
    - Chopawamsic Formation (1)
    - Elberton Granite (1)
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  - Matapedia Group (2)
  - middle Paleozoic (1)
  - Ordovician
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      - Arenigian
        
        Ballantrae Complex (1)
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      - Ellenburger Group (3)
      - Manx Group (1)
      - Tremadocian (2)
    - Martinsburg Formation (2)
    - Meguma Group (1)
    - Middle Ordovician
      - Black River Group (1)
      - Bromide Formation (1)
      - Chazyan (1)
      - Cloridorme Formation (3)
      - Darriwilian (1)
      - Deicke Bentonite Bed (1)
      - Millbrig Bentonite Bed (1)
      - Normanskill Formation (1)
      - Platteville Formation (1)
    - Trenton Group (4)
    - Upper Ordovician
      - Ashgillian (1)
      - Caradocian (2)
      - Cincinnatian
        
        Maysvillian (1)
      - Edenian (2)
      - Fairview Formation (1)
      - Katian (9)
      - Kope Formation (3)
      - Maquoketa Formation (1)
      - Red River Formation (4)
      - Trentonian (3)
    - Utica Shale (2)
    - Viola Limestone (1)
  - Permian
    - Council Grove Group (1)
    - Cutler Formation (1)
    - Ecca Group (6)
    - Guadalupian
      - Bell Canyon Formation (1)
      - Capitan Formation (2)
      - Capitanian (2)
      - Cherry Canyon Formation (1)
      - Grayburg Formation (1)
      - Roadian (2)
      - Wordian (2)
    - Kaibab Formation (1)
    - Lower Permian
      - Abo Formation (2)
      - Al Khlata Formation (1)
      - Barakar Stage (1)
      - Cherry Canyon Formation (1)
      - Cisuralian
        
        Artinskian (3)
        
        Asselian (3)
        
        Kungurian (4)
        
        Sakmarian (2)
      - Leman Sandstone Formation (2)
      - Leonardian
        
        Bone Spring Limestone (1)
        
        Clear Fork Group (1)
      - Wolfcampian
        
        Hueco Limestone (1)
    - Middle Permian (3)
    - Park City Formation (1)
    - Phosphoria Formation (2)
    - Rotliegendes (2)
    - Upper Permian
      - Lopingian
        
        Changhsingian (3)
        
        Wuchiapingian (2)
      - Permian-Triassic boundary (10)
      - Zechstein (4)
    - Wellington Formation (1)
  - Petersburg Granite (1)
  - Sauk Sequence (1)
  - Silurian
    - Lockport Formation (1)
    - Lower Silurian
      - Brassfield Formation (2)
      - Llandovery
        
        Aeronian (2)
        
        Interlake Formation (1)
        
        Rhuddanian (3)
        
        Telychian (2)
      - Wenlock
        
        Homerian (1)
        
        Sheinwoodian (1)
    - Middle Silurian
      - McKenzie Formation (1)
    - Niagaran (2)
    - Upper Silurian
      - Cayugan
        
        Tonoloway Limestone (3)
      - Ludlow (1)
      - Pridoli (3)
      - Salina Group (1)
  - Supai Formation (1)
  - Tippecanoe Sequence (1)
  - upper Paleozoic
    - Admire Group (1)
    - Bakken Formation (24)
    - Dwyka Formation (1)
    - Kaskaskia Sequence (2)
    - Tunguska Series (1)
  - Wissahickon Formation (2)
  - Woodford Shale (2)
- Phanerozoic (19)
- Precambrian
  - Adirondack Anorthosite (2)
  - Archean
    - Iron Ore Group (1)
    - J-M Reef (2)
    - Mesoarchean (1)
    - Neoarchean (7)
    - Paleoarchean (5)
    - Singhbhum Granite (1)
  - Baltimore Gneiss (1)
  - Brockman Iron Formation (1)
  - Chuar Group (1)
  - Delhi Supergroup (1)
  - Gunflint Iron Formation (2)
  - Hadean (9)
  - Hamersley Group (1)
  - Johnnie Formation (1)
  - Kingston Peak Formation (2)
  - Levack Gneiss (1)
  - Lewisian Complex (1)
  - Nipissing Diabase (1)
  - Pahrump Series (2)
  - Prichard Formation (1)
  - Purcell System (2)
  - Sokoman Formation (2)
  - Spuhler Peak Formation (1)
  - Stillwater Complex (5)
  - Uinta Mountain Group (1)
  - upper Precambrian
    - Proterozoic
      - Algonkian
        
        Baraboo Quartzite (1)
      - Damara System (1)
      - Huronian
        
        Onaping Formation (2)
      - Isan Orogeny (2)
      - Lewisian (1)
      - Lorrain Formation (1)
      - Mesoproterozoic
        
        Aldridge Formation (1)
        
        Belt Supergroup (7)
        
        Laxfordian (1)
        
        Missoula Group (1)
      - Neoproterozoic
        
        Cryogenian (5)
        
        Dengying Formation (1)
        
        Doushantuo Formation (2)
        
        Ediacaran (10)
        
        Lynchburg Formation (1)
        
        Moine Supergroup (1)
        
        Tonian (3)
        
        Torridonian (1)
        
        Vendian (3)
        
        Walden Creek Group (1)
      - Paleoproterozoic
        
        Birimian (1)
        
        Chelmsford Formation (1)
        
        Rustenburg Layered Suite (2)
        
        Svecofennian (1)
        
        Whitewater Group (2)
      - Roan Supergroup (1)
      - Sinian
        
        Dengying Formation (1)
        
        Doushantuo Formation (2)
      - Windermere System (3)
  - Vadito Group (2)
  - Witwatersrand Supergroup (1)
- Rhenohercynian (2)
- Saxothuringian (2)
igneous rocks
- extrusive rocks (1)
- igneous rocks
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  - feldspathoid rocks (3)
  - granophyre (6)
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  - plutonic rocks
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        garnet lherzolite (1)
        
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        harzburgite (17)
        
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        spinel lherzolite (3)
        
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        alkali olivine basalt (2)
        
        hawaiite (3)
        
        mugearite (4)
        
        trachybasalts (3)
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metamorphic rocks
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meteorites
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        ALH 84001 (1)
        
        SNC Meteorites
        
        chassignite
        
        Chassigny Meteorite (5)
        
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        Shergotty Meteorite (1)
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minerals
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        albite (21)
        
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        hydrogarnet
        
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        majorite (2)
        
        pyrope (1)
        
        schorlomite (1)
        
        spessartine (1)
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      - olivine group
        
        fayalite (4)
        
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        monticellite (2)
        
        olivine (59)
        
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      - phenakite group
        
        eucryptite (1)
        
        phenakite (3)
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        zircon (168)
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        chevkinite (1)
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        epidote (3)
        
        zoisite (1)
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      - melilite group
        
        akermanite (1)
        
        gehlenite (3)
        
        melilite (1)
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        pumpellyite (1)
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  - ring silicates
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  - sheet silicates
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- sulfates
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- sulfides
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- wehrlite (2)
Primary terms
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