The Devonian of New York. Devonian or Newyorkian? The International Subcommission on Devonian...
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Transcript of The Devonian of New York. Devonian or Newyorkian? The International Subcommission on Devonian...
The Devonian of New YorkThe Devonian of New York
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
Devonian – the Age of FishDevonian – the Age of Fish
Trouble in ParadiseTrouble in Paradise
K-bentonites (volcanic K-bentonites (volcanic ashes) in the Helderberg ashes) in the Helderberg GroupGroup
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
Onondaga Limestone – the last of Onondaga Limestone – the last of the carbonate seasthe carbonate seas
Devonian PaleogeographyDevonian Paleogeography
Gaspe’ Peninsula, Quebec – Gaspe’ Peninsula, Quebec – Volcanic AshesVolcanic Ashes
Acadia National Park, MaineAcadia National Park, Maine
Hudson Valley, NY - FoldingHudson Valley, NY - Folding
Angular Unconformity – Hudson ValleyAngular Unconformity – Hudson Valley
Taking out the TiltTaking out the Tilt
Folded Taconic UnconformityFolded Taconic Unconformity
The Catskill Clastic WedgeThe Catskill Clastic Wedge
The Catskill Front
Flysch in the Catskill WedgeFlysch in the Catskill Wedge
Catskill MolasseCatskill Molasse
Catskill MolasseCatskill Molasse
Catskill MolasseCatskill Molasse
Channel Sandstones and Channel Sandstones and Floodplain Mudstones/ShalesFloodplain Mudstones/Shales
Large Scale Cross StratificationLarge Scale Cross Stratification
Roots in the MolasseRoots in the Molasse
Offshore in the Clastic Wedge:Offshore in the Clastic Wedge:Shale with storm-deposited Shale with storm-deposited
sand/silt bedssand/silt beds
Offshore in the Clastic Wedge:Offshore in the Clastic Wedge:Shale (with concretions)Shale (with concretions)
Examples of the rich Devonian faunaExamples of the rich Devonian fauna
Geologic Resources from the Geologic Resources from the Catskill Clastic WedgeCatskill Clastic Wedge
New York State:New York State:Birthplace of the US petroleum industryBirthplace of the US petroleum industry
Natural gas in Western New YorkNatural gas in Western New York
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
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