The Devonian of New York. Devonian or Newyorkian? The International Subcommission on Devonian...
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The Devonian of New YorkThe Devonian of New York
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Devonian or Newyorkian?Devonian or Newyorkian?The International Subcommission on The International Subcommission on
Devonian Stratigraphy visits New York Devonian Stratigraphy visits New York StateState
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Devonian – the Age of FishDevonian – the Age of Fish
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Trouble in ParadiseTrouble in Paradise
K-bentonites (volcanic K-bentonites (volcanic ashes) in the Helderberg ashes) in the Helderberg GroupGroup
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Here we go! No, forget it.Here we go! No, forget it.Helderberg Group cut by major Helderberg Group cut by major unconformity unconformity
Overlain by Oriskany SandstoneOverlain by Oriskany Sandstone– Quartz areniteQuartz arenite
Oriskany is overlain by Tristates GroupOriskany is overlain by Tristates Group– Shale, siltstone, thin volcanic ashesShale, siltstone, thin volcanic ashes
Tristates is succeeded by Onondaga Tristates is succeeded by Onondaga LimestoneLimestone– Return to Paradise - ReefsReturn to Paradise - Reefs
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Onondaga Limestone – the last of Onondaga Limestone – the last of the carbonate seasthe carbonate seas
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Devonian PaleogeographyDevonian Paleogeography
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Gaspe’ Peninsula, Quebec – Gaspe’ Peninsula, Quebec – Volcanic AshesVolcanic Ashes
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Acadia National Park, MaineAcadia National Park, Maine
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Hudson Valley, NY - FoldingHudson Valley, NY - Folding
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Angular Unconformity – Hudson ValleyAngular Unconformity – Hudson Valley
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Taking out the TiltTaking out the Tilt
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Folded Taconic UnconformityFolded Taconic Unconformity
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The Catskill Clastic WedgeThe Catskill Clastic Wedge
The Catskill Front
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Flysch in the Catskill WedgeFlysch in the Catskill Wedge
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Catskill MolasseCatskill Molasse
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Catskill MolasseCatskill Molasse
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Catskill MolasseCatskill Molasse
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Channel Sandstones and Channel Sandstones and Floodplain Mudstones/ShalesFloodplain Mudstones/Shales
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Large Scale Cross StratificationLarge Scale Cross Stratification
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Roots in the MolasseRoots in the Molasse
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Offshore in the Clastic Wedge:Offshore in the Clastic Wedge:Shale with storm-deposited Shale with storm-deposited
sand/silt bedssand/silt beds
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Offshore in the Clastic Wedge:Offshore in the Clastic Wedge:Shale (with concretions)Shale (with concretions)
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Examples of the rich Devonian faunaExamples of the rich Devonian fauna
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Geologic Resources from the Geologic Resources from the Catskill Clastic WedgeCatskill Clastic Wedge
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New York State:New York State:Birthplace of the US petroleum industryBirthplace of the US petroleum industry
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Natural gas in Western New YorkNatural gas in Western New York
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A Parade of EvidenceA Parade of Evidence
Volcanic AshesVolcanic Ashes
Granitic IntrusionsGranitic Intrusions
Regional Metamorphism – New EnglandRegional Metamorphism – New England
FoldingFolding
FaultingFaulting
Catskill Clastic WedgeCatskill Clastic Wedge
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Acadian OrogenyAcadian Orogeny
Collision between Laurentia (North Collision between Laurentia (North America) andAmerica) and– Avalon = parts of northern Europe and U.K.Avalon = parts of northern Europe and U.K.– Peri-Gondwanan terranesPeri-Gondwanan terranes
Closure of the northern part of IapetusClosure of the northern part of Iapetus