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problematic fossils (2)
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geologic age
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Cenozoic
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upper Quaternary (3)
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Tertiary
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upper Pliocene
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Paleogene
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Oligocene (1)
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Mesozoic
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Cretaceous
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Albian (3)
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Macae Formation (1)
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Upper Cretaceous
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Eagle Ford Formation (1)
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Niobrara Formation (1)
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Turonian (2)
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Glen Canyon Group (1)
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Jurassic
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Triassic-Jurassic boundary (1)
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San Rafael Group (1)
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Upper Jurassic
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Morrison Formation (1)
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lower Mesozoic (1)
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Paleozoic
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Arbuckle Group (2)
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Eau Claire Formation (1)
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Mount Simon Sandstone (1)
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Carboniferous
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Lower Carboniferous
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Mississippian
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Barnett Shale (3)
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Lower Mississippian
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Cuyahoga Formation (1)
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Middle Mississippian
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Visean (3)
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Upper Mississippian
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Chesterian
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Imo Formation (1)
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Fayetteville Formation (1)
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Heath Formation (1)
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Mauch Chunk Formation (1)
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Serpukhovian (2)
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Pennsylvanian
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Brazil Formation (1)
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Conemaugh Group (4)
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Herrin Coal Member (1)
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Lower Pennsylvanian
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Morrowan
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Bloyd Formation (1)
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Mattoon Formation (1)
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Middle Pennsylvanian
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Atokan
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Atoka Formation (2)
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Carbondale Formation (3)
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Danville Coal Member (1)
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Desmoinesian
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Marmaton Group (1)
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Wewoka Formation (2)
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Moscovian (14)
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Paradox Formation (1)
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Staunton Formation (1)
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Tradewater Formation (1)
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Minturn Formation (3)
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Monongahela Group (2)
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Upper Pennsylvanian
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Glenshaw Formation (2)
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Holder Formation (7)
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Missourian
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Sturgis Formation (1)
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Virgilian
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Oread Limestone (1)
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Shawnee Group (4)
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Tonganoxie Sandstone (1)
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Wabaunsee Group (2)
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-
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Watahomigi Formation (1)
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Upper Carboniferous
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Stephanian (4)
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Westphalian (4)
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-
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Catskill Formation (1)
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Chattanooga Shale (2)
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Devonian
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Lower Devonian
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Battery Point Formation (1)
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Thirtyone Formation (1)
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Upper Devonian
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Leduc Formation (1)
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Grosmont Formation (1)
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Nisku Formation (1)
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Zlichovian (1)
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Dunkard Group (2)
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Laborcita Formation (2)
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Minnelusa Formation (2)
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New Albany Shale (1)
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Ordovician
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Ellenburger Group (3)
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Simpson Group (1)
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Montoya Group (1)
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Upper Ordovician
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Ashgillian (1)
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Womble Shale (1)
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Permian
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Chase Group (1)
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Cutler Formation (2)
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Guadalupian
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Bell Canyon Formation (1)
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Brushy Canyon Formation (1)
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Capitan Formation (1)
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Capitanian (2)
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Cherry Canyon Formation (1)
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Delaware Mountain Group (1)
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Grayburg Formation (2)
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Roadian (3)
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Seven Rivers Formation (1)
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Tansill Formation (1)
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Wordian (2)
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Hughes Creek Shale (1)
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Kaibab Formation (1)
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Lower Permian
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Abo Formation (2)
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Cherry Canyon Formation (1)
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Cisuralian
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Artinskian (3)
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Asselian (5)
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Kungurian (4)
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Sakmarian (3)
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Leonardian
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Bone Spring Limestone (1)
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Clear Fork Group (2)
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Wichita Group (2)
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Wolfcampian
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Hueco Limestone (1)
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Lyons Sandstone (1)
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McCloud Limestone (1)
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Middle Permian (4)
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Phosphoria Formation (1)
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Toroweap Formation (1)
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Upper Permian
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Lopingian
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Changhsingian (1)
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Wuchiapingian (2)
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Permian-Triassic boundary (2)
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-
Wellington Formation (1)
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Yates Formation (1)
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Yeso Formation (1)
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Silurian
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Lower Silurian
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Llandovery
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Telychian (1)
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-
-
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Supai Formation (4)
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Tensleep Sandstone (2)
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upper Paleozoic
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Admire Group (2)
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Kiaman Superchron (1)
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Weber Sandstone (1)
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Witwatersrand Supergroup (1)
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sheet silicates
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illite (3)
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sulfates
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sulfides
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Primary terms
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absolute age (19)
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Africa
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atmosphere (2)
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Nunavut
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carbon
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C-13/C-12 (10)
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organic carbon (4)
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Caribbean region
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West Indies
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Antilles
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Lesser Antilles
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Barbados (2)
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-
-
-
-
Cenozoic
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Quaternary
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Holocene
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lower Holocene (1)
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Pleistocene
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upper Pleistocene
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Tyrrhenian (1)
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Weichselian
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upper Weichselian
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Younger Dryas (1)
-
-
-
-
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upper Quaternary (3)
-
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Tertiary
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Neogene
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Miocene (3)
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Pliocene
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upper Pliocene
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Piacenzian (1)
-
-
-
-
Paleogene
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Eocene
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lower Eocene (1)
-
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Oligocene (1)
-
-
-
-
Central America
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Belize (2)
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Chordata
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Vertebrata
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Pisces
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Chondrichthyes
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Elasmobranchii (2)
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Holocephali (1)
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Osteichthyes
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Actinopterygii (1)
-
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Tetrapoda
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Amphibia
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Labyrinthodontia
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Temnospondyli (2)
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Lepospondyli (1)
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Reptilia
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Cotylosauria (1)
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Synapsida
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Therapsida
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climate change (9)
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Europe
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igneous rocks
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inclusions
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fluid inclusions (4)
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Invertebrata
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Chelicerata
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Brachiopoda
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Articulata
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Productida (1)
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Hydrozoa (2)
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Echinodermata
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Crinozoa
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Homalozoa
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Mollusca
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Bivalvia
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Anthraconaia (1)
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Cephalopoda
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Goniatitida (3)
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Coleoidea (1)
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Porifera
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Protista
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Foraminifera
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Fusulinina
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Triticites
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Rotaliina
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Radiolaria (1)
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Vermes
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stable isotopes
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Sr-87/Sr-86 (4)
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mantle (1)
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maps (12)
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Mediterranean region (1)
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Mesozoic
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Cretaceous
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Lower Cretaceous
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Albian (3)
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McMurray Formation (1)
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Valanginian (1)
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Macae Formation (1)
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Mancos Shale (1)
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Natih Formation (1)
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Upper Cretaceous
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Cardium Formation (1)
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Coniacian (1)
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Gulfian
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Eagle Ford Formation (1)
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Niobrara Formation (1)
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Pierre Shale (1)
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Turonian (2)
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Glen Canyon Group (1)
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Jurassic
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Lower Jurassic
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Triassic-Jurassic boundary (1)
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San Rafael Group (1)
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Upper Jurassic
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Morrison Formation (1)
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lower Mesozoic (1)
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Permian-Triassic boundary (2)
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Middle Triassic
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Anisian (1)
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Moenkopi Formation (1)
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Upper Triassic
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Chinle Formation (1)
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North America
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Basin and Range Province
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Great Basin (5)
-
-
Great Plains (1)
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Michigan Basin (1)
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North American Cordillera
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Canadian Cordillera (1)
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-
North American Craton (1)
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Pedregosa Basin (3)
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Rocky Mountains
-
U. S. Rocky Mountains
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Bighorn Mountains (1)
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Uinta Mountains (1)
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-
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Transcontinental Arch (1)
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-
Ocean Drilling Program
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Leg 133
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ODP Site 819 (1)
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ODP Site 820 (1)
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-
-
oil and gas fields (21)
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orogeny (8)
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oxygen
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O-18/O-16 (8)
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-
Pacific Ocean
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South Pacific
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Southwest Pacific
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Coral Sea
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Great Barrier Reef (4)
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Queensland Plateau (1)
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-
-
-
West Pacific
-
Southwest Pacific
-
Coral Sea
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Great Barrier Reef (4)
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Queensland Plateau (1)
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-
-
-
-
paleobotany (2)
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paleoclimatology (38)
-
paleoecology (34)
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paleogeography (51)
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paleomagnetism (4)
-
paleontology (16)
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Paleozoic
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Arbuckle Group (2)
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Bird Spring Formation (2)
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Cambrian
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Middle Cambrian (1)
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Upper Cambrian
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Eau Claire Formation (1)
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Mount Simon Sandstone (1)
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-
-
Carboniferous
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Bartlesville Sand (1)
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Big Snowy Group (1)
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Ely Limestone (1)
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Jackfork Group (1)
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Lower Carboniferous
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Dinantian (2)
-
-
Mississippian
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Barnett Shale (3)
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Lower Mississippian
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Cuyahoga Formation (1)
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-
Middle Mississippian
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Visean (3)
-
-
Upper Mississippian
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Chesterian
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Imo Formation (1)
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-
Fayetteville Formation (1)
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Hartselle Sandstone (1)
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Heath Formation (1)
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Mauch Chunk Formation (1)
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Serpukhovian (2)
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-
-
Pennsylvanian
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Brazil Formation (1)
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Conemaugh Group (4)
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Hermosa Group (2)
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Herrin Coal Member (1)
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Lower Pennsylvanian
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Bashkirian (2)
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Morrowan
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Bloyd Formation (1)
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-
-
Mattoon Formation (1)
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Middle Pennsylvanian
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Atokan
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Atoka Formation (2)
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-
Carbondale Formation (3)
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Danville Coal Member (1)
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Desmoinesian
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Marmaton Group (1)
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Wewoka Formation (2)
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Moscovian (14)
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Paradox Formation (1)
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Staunton Formation (1)
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Tradewater Formation (1)
-
-
Minturn Formation (3)
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Monongahela Group (2)
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Morrow Formation (1)
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Pittsburgh Coal (1)
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Pottsville Group (1)
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Springfield Coal Member (1)
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Upper Pennsylvanian
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Ames Limestone (1)
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Canyon Group (1)
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Cisco Group (9)
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Glenshaw Formation (2)
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Gzhelian (12)
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Holder Formation (7)
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Kasimovian (15)
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Missourian
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Kansas City Group (2)
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Lansing Group (3)
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Plattsburg Limestone (1)
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Rock Lake Shale Member (1)
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Stanton Formation (1)
-
-
Sturgis Formation (1)
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Virgilian
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Douglas Group (4)
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Lawrence Formation (2)
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Lecompton Limestone (1)
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Oread Limestone (1)
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Shawnee Group (4)
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Tonganoxie Sandstone (1)
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Wabaunsee Group (2)
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-
-
Watahomigi Formation (1)
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-
Upper Carboniferous
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Stephanian (4)
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Westphalian (4)
-
-
-
Catskill Formation (1)
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Chattanooga Shale (2)
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Devonian
-
Lower Devonian
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Battery Point Formation (1)
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Emsian (3)
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Lochkovian (1)
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Pragian (1)
-
-
Thirtyone Formation (1)
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Upper Devonian
-
Frasnian
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Leduc Formation (1)
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-
Grosmont Formation (1)
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Nisku Formation (1)
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-
Zlichovian (1)
-
-
Dunkard Group (2)
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Honaker Trail Formation (1)
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Laborcita Formation (2)
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Minnelusa Formation (2)
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New Albany Shale (1)
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Ordovician
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Lower Ordovician
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Ellenburger Group (3)
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-
Middle Ordovician
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Simpson Group (1)
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-
Montoya Group (1)
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Upper Ordovician
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Ashgillian (1)
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Bighorn Dolomite (1)
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Hirnantian (1)
-
-
Womble Shale (1)
-
-
Permian
-
Chase Group (1)
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Council Grove Group (2)
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Cutler Formation (2)
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Guadalupian
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Bell Canyon Formation (1)
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Brushy Canyon Formation (1)
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Capitan Formation (1)
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Capitanian (2)
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Cherry Canyon Formation (1)
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Delaware Mountain Group (1)
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Grayburg Formation (2)
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Roadian (3)
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Seven Rivers Formation (1)
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Tansill Formation (1)
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Wordian (2)
-
-
Hughes Creek Shale (1)
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Kaibab Formation (1)
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Lower Permian
-
Abo Formation (2)
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Cherry Canyon Formation (1)
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Cisuralian
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Artinskian (3)
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Asselian (5)
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Kungurian (4)
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Sakmarian (3)
-
-
Leonardian
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Bone Spring Limestone (1)
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Clear Fork Group (2)
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-
Wichita Group (2)
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Wolfcampian
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Hueco Limestone (1)
-
-
-
Lyons Sandstone (1)
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McCloud Limestone (1)
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Middle Permian (4)
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Phosphoria Formation (1)
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Toroweap Formation (1)
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Upper Permian
-
Lopingian
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Changhsingian (1)
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Wuchiapingian (2)
-
-
Permian-Triassic boundary (2)
-
-
Wellington Formation (1)
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Yates Formation (1)
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Yeso Formation (1)
-
-
Silurian
-
Lower Silurian
-
Llandovery
-
Telychian (1)
-
-
-
-
Supai Formation (4)
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Tensleep Sandstone (2)
-
upper Paleozoic
-
Admire Group (2)
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Fountain Formation (3)
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Kiaman Superchron (1)
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Wood River Formation (1)
-
-
Weber Sandstone (1)
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Wells Formation (1)
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Woodford Shale (3)
-
-
palynology (1)
-
palynomorphs
-
acritarchs (1)
-
Dinoflagellata (1)
-
miospores
-
pollen (4)
-
-
-
paragenesis (2)
-
petroleum
-
natural gas
-
coalbed methane (1)
-
-
-
petrology (7)
-
Phanerozoic (2)
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Plantae
-
algae
-
calcareous algae (1)
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Chlorophyta
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Chlorophyceae
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Codiaceae
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Halimeda (1)
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-
-
-
Rhodophyta
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Corallinaceae (1)
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-
-
Pteridophyta
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Filicopsida (1)
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Lycopsida
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Lepidodendron (1)
-
-
Sphenopsida (3)
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-
Spermatophyta
-
Gymnospermae
-
Coniferales (2)
-
Cordaitales
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Cordaites (1)
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-
Ginkgoales (1)
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Pteridospermae (3)
-
-
-
-
plate tectonics (7)
-
pollution (2)
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Precambrian
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Archean (1)
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Central Rand Group (1)
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upper Precambrian
-
Proterozoic
-
Mesoproterozoic (1)
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Neoproterozoic (3)
-
Paleoproterozoic (1)
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-
-
Witwatersrand Supergroup (1)
-
-
problematic fossils (2)
-
reefs (8)
-
reservoirs (1)
-
sea water (1)
-
sea-level changes (48)
-
sedimentary petrology (22)
-
sedimentary rocks
-
carbonate rocks
-
boundstone (4)
-
chalk (1)
-
dolostone (7)
-
grainstone (6)
-
limestone
-
biomicrite (1)
-
calcarenite (1)
-
calcilutite (1)
-
coquina (1)
-
-
packstone (6)
-
wackestone (6)
-
-
chemically precipitated rocks
-
chert (1)
-
evaporites
-
salt (1)
-
-
-
clastic rocks
-
argillite (1)
-
black shale (13)
-
claystone (1)
-
conglomerate (7)
-
diamictite (1)
-
eolianite (3)
-
marl (1)
-
mudstone (17)
-
red beds (2)
-
sandstone (34)
-
shale (17)
-
siltstone (10)
-
-
coal
-
bituminous coal (1)
-
-
oil shale (2)
-
-
sedimentary structures
-
bedding plane irregularities
-
ripple marks (3)
-
-
biogenic structures
-
algal structures
-
algal banks (2)
-
algal mats (1)
-
algal mounds (10)
-
-
bioherms (5)
-
bioturbation (8)
-
lebensspuren (2)
-
microbial mats (1)
-
oncolites (1)
-
stromatolites (2)
-
-
planar bedding structures
-
cross-bedding (2)
-
cross-laminations (4)
-
cross-stratification (3)
-
cyclothems
-
megacyclothems (2)
-
-
flaser bedding (1)
-
hummocky cross-stratification (1)
-
laminations (3)
-
rhythmic bedding (4)
-
rhythmite (3)
-
ripple drift-cross laminations (2)
-
sand bodies (1)
-
-
primary structures (1)
-
rhizoliths (2)
-
secondary structures
-
concretions (2)
-
stylolites (1)
-
-
seismites (1)
-
soft sediment deformation (2)
-
-
sedimentation (58)
-
sediments
-
carbonate sediments (6)
-
clastic sediments
-
alluvium (1)
-
dust (2)
-
gravel (1)
-
loess (3)
-
mud (2)
-
quartz sand (1)
-
sand (1)
-
-
marine sediments (3)
-
peat (2)
-
-
silicon (1)
-
soils (6)
-
South America
-
Amazon Basin (1)
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Andes (1)
-
Argentina
-
Chubut Argentina (1)
-
Neuquen Basin (1)
-
-
Brazil (4)
-
Patagonia (1)
-
Peru (1)
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Venezuela (1)
-
-
stratigraphy (70)
-
structural analysis (2)
-
structural geology (14)
-
tectonics (35)
-
tectonophysics (1)
-
thallophytes (3)
-
underground installations (1)
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United States
-
Alabama
-
Jackson County Alabama (1)
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Madison County Alabama (1)
-
-
Anadarko Basin (15)
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Ardmore Basin (2)
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Arizona
-
Cochise County Arizona (1)
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Coconino County Arizona (1)
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Gila County Arizona (1)
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Mogollon Rim (1)
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Mohave County Arizona (1)
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Pima County Arizona (1)
-
-
Arkansas
-
Johnson County Arkansas (1)
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Searcy County Arkansas (1)
-
-
Arkoma Basin (3)
-
California
-
Inyo County California (1)
-
San Bernardino County California (1)
-
Shasta County California (1)
-
-
Cambridge Arch (2)
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Central Basin Platform (4)
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Chadron Arch (1)
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Cherokee Basin (3)
-
Colorado
-
Baca County Colorado (1)
-
Denver County Colorado (1)
-
Eagle County Colorado (2)
-
El Paso County Colorado (2)
-
Elbert County Colorado (1)
-
Gunnison County Colorado (1)
-
Gunnison River (1)
-
Kiowa County Colorado (1)
-
Las Animas County Colorado (1)
-
Logan County Colorado (1)
-
Montezuma County Colorado (1)
-
Otero County Colorado (1)
-
Piceance Basin (1)
-
Summit County Colorado (1)
-
Washington County Colorado (1)
-
Yuma County Colorado (1)
-
-
Colorado Plateau (10)
-
Delaware Basin (10)
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Denver Basin (9)
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Dunkard Basin (1)
-
Forest City Basin (6)
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Four Corners (2)
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Great Basin (5)
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Hardeman Basin (1)
-
Hueco Mountains (1)
-
Hugoton Embayment (2)
-
Idaho
-
Butte County Idaho (1)
-
-
Illinois
-
Franklin County Illinois (1)
-
Fulton County Illinois (1)
-
Macoupin County Illinois (1)
-
Putnam County Illinois (1)
-
Richland County Illinois (1)
-
Wabash County Illinois (1)
-
-
Illinois Basin (18)
-
Indiana
-
Clay County Indiana (2)
-
-
Iowa
-
Madison County Iowa (1)
-
-
Kansas
-
Anderson County Kansas (1)
-
Bourbon County Kansas (1)
-
Chautauqua County Kansas (3)
-
Clark County Kansas (1)
-
Coffey County Kansas (2)
-
Douglas County Kansas (3)
-
Elk County Kansas (2)
-
Greenwood County Kansas
-
Hamilton Quarry (1)
-
-
Hugoton Field (2)
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Jefferson County Kansas (1)
-
Leavenworth County Kansas (1)
-
Marion County Kansas (1)
-
Miami County Kansas (1)
-
Shawnee County Kansas
-
Topeka Kansas (1)
-
-
Stanton County Kansas (1)
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Stevens County Kansas (1)
-
Wabaunsee County Kansas (1)
-
Wyandotte County Kansas
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Kansas City Kansas (1)
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-
-
Kentucky
-
Boyd County Kentucky (1)
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Rough Creek fault zone (1)
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Union County Kentucky (2)
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Webster County Kentucky (1)
-
-
Klamath Mountains (1)
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Midcontinent (29)
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Midwest (3)
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Mississippi Valley
-
Upper Mississippi Valley (1)
-
-
Missouri
-
Andrew County Missouri (1)
-
-
Montana
-
Big Snowy Mountains (1)
-
-
Nebraska
-
Box Butte County Nebraska (1)
-
Cass County Nebraska (1)
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Cheyenne County Nebraska (1)
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Dawes County Nebraska (1)
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Garden County Nebraska (1)
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Red Willow County Nebraska (2)
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Sioux County Nebraska (1)
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-
Nevada
-
Arrow Canyon Range (1)
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Clark County Nevada (3)
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Elko County Nevada (5)
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Humboldt County Nevada (2)
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White Pine County Nevada
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Ely Nevada (1)
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-
-
New Mexico
-
Catron County New Mexico (1)
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Dona Ana County New Mexico (2)
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Eddy County New Mexico (1)
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Grant County New Mexico (1)
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Hidalgo County New Mexico (1)
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Lea County New Mexico
-
Vacuum Field (1)
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-
Otero County New Mexico (8)
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Sandoval County New Mexico (1)
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Socorro County New Mexico (2)
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Tucumcari Basin (1)
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Ohio
-
Athens County Ohio (1)
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Columbiana County Ohio (2)
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Guernsey County Ohio (1)
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Morrow County Ohio (1)
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Oklahoma
-
Arbuckle Anticline (1)
-
Arbuckle Mountains (1)
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Beckham County Oklahoma (1)
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Blaine County Oklahoma (1)
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Bryan County Oklahoma (1)
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Caddo County Oklahoma (1)
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Carter County Oklahoma (1)
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Criner Hills (1)
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Custer County Oklahoma (1)
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Dewey County Oklahoma (2)
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Kay County Oklahoma (1)
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Major County Oklahoma (1)
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Marshall County Oklahoma (1)
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Nowata County Oklahoma (1)
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Okmulgee County Oklahoma (2)
-
Seminole County Oklahoma (2)
-
Stephens County Oklahoma (1)
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Wichita Mountains (1)
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Wichita Uplift (2)
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Woodward County Oklahoma (1)
-
-
Orogrande Basin (7)
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Ouachita Belt (2)
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Ouachita Mountains (3)
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Palo Duro Basin (2)
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Paradox Basin (7)
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Pennsylvania (3)
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Powder River basin (2)
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South Dakota (1)
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Southwestern U.S. (2)
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Tennessee
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Morgan County Tennessee (1)
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Roane County Tennessee (1)
-
-
Texas
-
Amarillo Uplift (2)
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Andrews County Texas (1)
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Baylor County Texas (1)
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Borden County Texas (3)
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Brewster County Texas
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Big Bend National Park (1)
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-
Brown County Texas (4)
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Callahan County Texas (1)
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Clay County Texas (1)
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Concho County Texas (1)
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Culberson County Texas (1)
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Dalhart Basin (1)
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Dawson County Texas (1)
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Denton County Texas (1)
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Eastland County Texas (2)
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El Paso County Texas (1)
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Fort Worth Basin (2)
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Glasscock County Texas (1)
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Hale County Texas (1)
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Hockley County Texas (1)
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Howard County Texas (1)
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Jack County Texas (3)
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Jones County Texas (1)
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King County Texas (1)
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Lamb County Texas (1)
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Lampasas County Texas (1)
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Lubbock County Texas (1)
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Lynn County Texas (1)
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Marathon Geosyncline (2)
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Martin County Texas (1)
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Midland Basin (21)
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Mitchell County Texas (1)
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Nolan County Texas (1)
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Pecos County Texas (2)
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Reagan County Texas (1)
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Reeves County Texas (2)
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Runnels County Texas (1)
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Scurry County Texas (1)
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Shackelford County Texas (1)
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Stephens County Texas (1)
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Sterling County Texas (2)
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Taylor County Texas (1)
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Terry County Texas (1)
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Texas Panhandle (1)
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West Texas (16)
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Wheeler County Texas (1)
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Winkler County Texas (1)
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Wise County Texas (2)
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Young County Texas (1)
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-
U. S. Rocky Mountains
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Bighorn Mountains (1)
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Uinta Mountains (1)
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-
Uncompahgre Uplift (4)
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Utah
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Kaiparowits Plateau (1)
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Millard County Utah (3)
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San Juan County Utah (3)
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Tooele County Utah (1)
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West Virginia (1)
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Western U.S. (2)
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Wisconsin
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Waukesha County Wisconsin (1)
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Wyoming
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Natrona County Wyoming (1)
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-
-
USSR (1)
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waste disposal (3)
-
weathering (2)
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well-logging (7)
-
-
rock formations
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Goose Egg Formation (1)
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J Sandstone (1)
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Nama Group (1)
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Nansen Formation (2)
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San Andres Formation (2)
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-
sedimentary rocks
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calcrete (1)
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caliche (3)
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floatstone (1)
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molasse (1)
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sedimentary rocks
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carbonate rocks
-
boundstone (4)
-
chalk (1)
-
dolostone (7)
-
grainstone (6)
-
limestone
-
biomicrite (1)
-
calcarenite (1)
-
calcilutite (1)
-
coquina (1)
-
-
packstone (6)
-
wackestone (6)
-
-
chemically precipitated rocks
-
chert (1)
-
evaporites
-
salt (1)
-
-
-
clastic rocks
-
argillite (1)
-
black shale (13)
-
claystone (1)
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conglomerate (7)
-
diamictite (1)
-
eolianite (3)
-
marl (1)
-
mudstone (17)
-
red beds (2)
-
sandstone (34)
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shale (17)
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siltstone (10)
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-
coal
-
bituminous coal (1)
-
-
oil shale (2)
-
-
siliciclastics (12)
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tempestite (1)
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turbidite (1)
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volcaniclastics (2)
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-
sedimentary structures
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borings (1)
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burrows (5)
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channels (5)
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coprolites (1)
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mounds (3)
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sedimentary structures
-
bedding plane irregularities
-
ripple marks (3)
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-
biogenic structures
-
algal structures
-
algal banks (2)
-
algal mats (1)
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algal mounds (10)
-
-
bioherms (5)
-
bioturbation (8)
-
lebensspuren (2)
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microbial mats (1)
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oncolites (1)
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stromatolites (2)
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-
planar bedding structures
-
cross-bedding (2)
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cross-laminations (4)
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cross-stratification (3)
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cyclothems
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megacyclothems (2)
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-
flaser bedding (1)
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hummocky cross-stratification (1)
-
laminations (3)
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rhythmic bedding (4)
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rhythmite (3)
-
ripple drift-cross laminations (2)
-
sand bodies (1)
-
-
primary structures (1)
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rhizoliths (2)
-
secondary structures
-
concretions (2)
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stylolites (1)
-
-
seismites (1)
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soft sediment deformation (2)
-
-
stratification (2)
-
tracks (2)
-
trails (1)
-
-
sediments
-
sediments
-
carbonate sediments (6)
-
clastic sediments
-
alluvium (1)
-
dust (2)
-
gravel (1)
-
loess (3)
-
mud (2)
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quartz sand (1)
-
sand (1)
-
-
marine sediments (3)
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peat (2)
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lower Virgilian
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Journal Article
MAPESITES , A NEW UPPER PENNSYLVANIAN (LOWER VIRGILIAN) AMMONOID FROM KANSAS Available to Purchase
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 November 2003
Journal of Paleontology (2003) 77 (6): 1195–1197.
... digitations; and small, rounded umbilical lobe. Sutural formula: ( V 1 V 1 ) LU:ID For Royal H. Mapes in recognition of his numerous contributions to the Pennsylvanian paleontology of the Midcontinent. Lower Virgilian strata ( Pseudaktubites stainbrooki ammonoid Subzone) in the Little Pawnee...
Journal Article
Stratigraphic Architecture of the Tonganoxie Paleovalley Fill (Lower Virgilian) in Northeastern Kansas Available to Purchase
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 July 1995
AAPG Bulletin (1995) 79 (7): 1019–1042.
... is within the lowest Virgilian (Stephanian) Douglas Group ( Figure 2 ). The underlying Lansing Group and overlying lower Shawnee Group both contain thick, laterally extensive limestones and typical Kansas-type cyclothems ( Heckel, 1977 ). In contrast, the Douglas Group in Kansas lacks the thick limestones...
Image
Schematic cross section of upper Missourian to lower Virgilian stratal succ... Available to Purchase
in Impact of Longer-Term Modest Climate Shifts on Architecture of High-Frequency Sequences (Cyclothems), Pennsylvanian of Midcontinent U.S.A.
> Journal of Sedimentary Research
Published: 01 May 2005
Figure 5 Schematic cross section of upper Missourian to lower Virgilian stratal succession along outcrop belt (see Figs. 1 , 4 ), supplemented with shallow subsurface data. The cross section is slightly oblique to depositional dip. Geometric relationships have been somewhat altered to show
Image
—Outcrop distribution of Missourian and lower Virgilian phylloid algal-moun... Available to Purchase
Published: 01 February 1975
Fig. 2 —Outcrop distribution of Missourian and lower Virgilian phylloid algal-mound complexes in eastern Kansas and adjacent states. Wide areas with oblique lining represent outcrop of mound complexes; narrow lines represent nonmound facies; all traces are straightened and simplified. Lines 1-3
Image
—Outcrop distribution of Missourian and lower Virgilian phylloid algal-moun... Available to Purchase
in Phylloid Algal-Mound Complexes in Outcropping Upper Pennsylvanian Rocks of Mid-Continent
> AAPG Bulletin
Published: 01 May 1969
FIG. 2. —Outcrop distribution of Missourian and lower Virgilian phylloid algal-mound complexes in eastern Kansas and adjacent states. Wide areas with oblique lining represent outcrop of mound complexes; narrow lines represent nonmound facies; all traces are straightened and simplified. Lines 1
Image
—Cross section of lower Virgilian and upper Missourian beds in eastern Sedg... Available to Purchase
Published: 01 February 1949
Fig. 4. —Cross section of lower Virgilian and upper Missourian beds in eastern Sedgwick County Kansas, illustrating lithologic changes. Well numbers refer to Table I excepting No. 5A, The Texas Company’s Hutchins No. 1, SE. 1 4 , SE. 1 4 , SW. 1 4 , Sec. 26, T. 27
Journal Article
Subsurface Cross Sections from Marion County Kansas, to Osage County, Oklahoma Available to Purchase
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 February 1949
AAPG Bulletin (1949) 33 (2): 131–152.
...Fig. 4. —Cross section of lower Virgilian and upper Missourian beds in eastern Sedgwick County Kansas, illustrating lithologic changes. Well numbers refer to Table I excepting No. 5A, The Texas Company’s Hutchins No. 1, SE. 1 4 , SE. 1 4 , SW. 1 4 , Sec. 26, T. 27...
Journal Article
Paleoecology of Nodulose Zone at Top of Haskell Limestone (Upper Pennsylvanian) in Kansas Available to Purchase
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 September 1957
AAPG Bulletin (1957) 41 (9): 2012–2036.
...Halsey W. Miller; Ada Swineford ABSTRACT A paleoecological study was made of a phosphatic nodule zone at the base of the Robbins shale (lower Virgilian, Upper Pennsylvanian) in Douglas County, Kansas. The nodules formed in shallow marine basins or bays which are inferred to have been characterized...
Journal Article
Phylloid Algal-Mound Complexes in Outcropping Upper Pennsylvanian Rocks of Mid-Continent Available to Purchase
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 May 1969
AAPG Bulletin (1969) 53 (5): 1058–1074.
...FIG. 2. —Outcrop distribution of Missourian and lower Virgilian phylloid algal-mound complexes in eastern Kansas and adjacent states. Wide areas with oblique lining represent outcrop of mound complexes; narrow lines represent nonmound facies; all traces are straightened and simplified. Lines 1...
Image
Paleodepositional map of the Virgilian regional stage (see Figure 2 for t... Available to Purchase
in Pennsylvanian paleodepositional evolution of the greater Permian Basin, Texas and New Mexico: Depositional systems and hydrocarbon reservoir analysis
> AAPG Bulletin
Published: 01 September 2011
Figure 8 Paleodepositional map of the Virgilian regional stage (see Figure 2 for time reference). See the Figure 3 caption for notes regarding Figures 4 – 8 . Note north-south–trending green dashed line on right denoting position of the lower Virgilian carbonate shelf margin (i.e
Image
—(From Moore, and others, 1951, p. 68) Generalized columnar section of lowe... Available to Purchase
in Paleoecology of Nodulose Zone at Top of Haskell Limestone (Upper Pennsylvanian) in Kansas
> AAPG Bulletin
Published: 01 September 1957
Fig. 3. —(From Moore, and others, 1951, p. 68) Generalized columnar section of lower Virgilian rocks. Position of phosphatic nodule zone indicated by row of open ellipses.
Image
—Classification of lower and middle Virgilian rocks in northern Mid-Contine... Available to Purchase
in Classification of Pennsylvanian Rocks in Iowa, Kansas, Missouri, Nebraska, and Northern Oklahoma
> AAPG Bulletin
Published: 01 November 1948
Fig. 5. —Classification of lower and middle Virgilian rocks in northern Mid-Continent region. Column at extreme left shows agreed inter-state classification which is subject to modifications imposed by lateral variations of deposits. Other columns indicate previous usage in several states. Some
Image
Figure 3 — Dunbarites from the North American Midcontinent. 1, 2, 13–17,... Available to Purchase
in New Occurrences of the Pennsylvanian Index Ammonoid Dunbarites from the North American Midcontinent
> Journal of Paleontology
Published: 01 May 2009
-lower Virgilian, West Texas ( 10–12 ) and the Colony Creek Shale Member, Caddo Creek Formation, basal Virgilian, north-central Texas ( 18–21 ); 10–12, ventral, right lateral, and apertural views of paratype SUI 104280, ×5; 18–20, ventral, left lateral, and apertural views of holotype SUI 54880, ×5
Image
—Ideal Upper Pennsylvanian megacyclothem showing complete development of al... Available to Purchase
in Environmental Interpretation of Conodont Distribution in Upper Pennsylvanian (Missourian) Megacyclothems in Eastern Kansas
> AAPG Bulletin
Published: 01 March 1975
Fig. 1 —Ideal Upper Pennsylvanian megacyclothem showing complete development of all members, as typified by Oread megacyclothem in Shawnee Group of lower Virgilian Stage (after Moore, 1936 , p. 26-35; 1949 , p. 78-79, 144-145; personal observations). (O) marks shale members that are more like
Journal Article
Missourian and Virgilian Brachiopod Biostratigraphy, Bird Spring Group at Arrow Canyon, Clark County, Nevada: ABSTRACT Free
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 May 1982
AAPG Bulletin (1982) 66 (5): 594–595.
... brachiopod assemblage totaling 21 strophomenids and 17 taxa of other orders. Fossil abundance is greatest in the lower part of the Missourian and from the topmost Missourian through the middle Virgilian. Correlation with the middle Virgilian of North Texas and, perhaps, the lower Missourian of the southwest...
Journal Article
Late Pennsylvanian-Early Permian fusulinids from southeast Arizona Free
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 March 1963
Journal of Paleontology (1963) 37 (2): 323–365.
... disconformably overlying middle Des Moinesian beds. This early Virgilian sequence is overlain by a zone of middle to late Virgilian fusulinids, Triticites ventricosus sacramentoensis and Triticites cf. T. plummeri, that occurs in the uppermost beds of the Horquilla Limestone and ranges into the lower 20 to 235...
Journal Article
Fusulinid Assemblages from Late Pennyslvanian and Early Permian of Southeastern Arizona: ABSTRACT Free
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 February 1962
AAPG Bulletin (1962) 46 (2): 277.
...Charles A. Ross; Floyd F. Sabins, Jr. ABSTRACT The varied fusulinid faunas of the late Pennsylvanian (Virgilian) and early Permian (Wolfcampian) parts of the Naco Group and the Earp Formation can be divided into five assemblage zones. The lowest zone is characterized by Triticites cullomensis...
Image
Pennsylvanian-Permian stratigraphy of the western (San Andres Mountains), e... Available to Purchase
in Glacioeustatic Transgressive Reflux: Stratiform Dolomite in Pennsylvanian Bioherms of the Western Orogrande Basin, New Mexico
> Journal of Sedimentary Research
Published: 01 November 2000
-lower Wolfcampian section of the Sacramento Mountains (references in text), and the Desmoinesian section of both ranges ( Algeo et al. 1991 ). Middle-late Virgilian age for the western Orogrande mounds is based on fusulinid identifications by G. Wahlman and G. Wilde (data in Soreghan and Giles 1999a
Journal Article
New Occurrences of the Pennsylvanian Index Ammonoid Dunbarites from the North American Midcontinent Available to Purchase
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 May 2009
Journal of Paleontology (2009) 83 (3): 405–413.
...-lower Virgilian, West Texas ( 10–12 ) and the Colony Creek Shale Member, Caddo Creek Formation, basal Virgilian, north-central Texas ( 18–21 ); 10–12, ventral, right lateral, and apertural views of paratype SUI 104280, ×5; 18–20, ventral, left lateral, and apertural views of holotype SUI 54880, ×5...
Journal Article
Pennsylvanian and Early Permian Paleogeography, Southern Colorado Plateau and Vicinity Available to Purchase
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 May 1980
AAPG Bulletin (1980) 64 (5): 677.
...Ronald C. Blakey Abstract Pennsylvanian and Lower Permian sedimentary rocks of the southern Colorado Plateau have been the subject of controversy concerning their correlation and origin. Paralic sediments of the Supai group (Morrowan, Atokan, Virgilian, and Wolfcampian) were deposited in the Grand...
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