The Devonian of New York

29
The Devonian of New The Devonian of New York York

description

The Devonian of New York. Devonian or Newyorkian? The International Subcommission on Devonian Stratigraphy visits New York State. Devonian – the Age of Fish. Trouble in Paradise. K-bentonites (volcanic ashes) in the Helderberg Group. Here we go! No, forget it. - PowerPoint PPT Presentation

Transcript of The Devonian of New York

Page 1: The Devonian of New York

The Devonian of New YorkThe Devonian of New York

Page 2: The 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

Page 3: The Devonian of New York

Devonian – the Age of FishDevonian – the Age of Fish

Page 4: The Devonian of New York

Trouble in ParadiseTrouble in Paradise

K-bentonites (volcanic K-bentonites (volcanic ashes) in the Helderberg ashes) in the Helderberg GroupGroup

Page 5: The Devonian of New York

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

Page 6: The Devonian of New York

Onondaga Limestone – the last of Onondaga Limestone – the last of the carbonate seasthe carbonate seas

Page 7: The Devonian of New York

Devonian PaleogeographyDevonian Paleogeography

Page 8: The Devonian of New York

Gaspe’ Peninsula, Quebec – Gaspe’ Peninsula, Quebec – Volcanic AshesVolcanic Ashes

Page 9: The Devonian of New York

Acadia National Park, MaineAcadia National Park, Maine

Page 10: The Devonian of New York

Hudson Valley, NY - FoldingHudson Valley, NY - Folding

Page 11: The Devonian of New York

Angular Unconformity – Hudson ValleyAngular Unconformity – Hudson Valley

Page 12: The Devonian of New York

Taking out the TiltTaking out the Tilt

Page 13: The Devonian of New York

Folded Taconic UnconformityFolded Taconic Unconformity

Page 14: The Devonian of New York

The Catskill Clastic WedgeThe Catskill Clastic Wedge

The Catskill Front

Page 15: The Devonian of New York

Flysch in the Catskill WedgeFlysch in the Catskill Wedge

Page 16: The Devonian of New York

Catskill MolasseCatskill Molasse

Page 17: The Devonian of New York

Catskill MolasseCatskill Molasse

Page 18: The Devonian of New York

Catskill MolasseCatskill Molasse

Page 19: The Devonian of New York

Channel Sandstones and Channel Sandstones and Floodplain Mudstones/ShalesFloodplain Mudstones/Shales

Page 20: The Devonian of New York

Large Scale Cross StratificationLarge Scale Cross Stratification

Page 21: The Devonian of New York

Roots in the MolasseRoots in the Molasse

Page 22: The Devonian of New York

Offshore in the Clastic Wedge:Offshore in the Clastic Wedge:Shale with storm-deposited Shale with storm-deposited

sand/silt bedssand/silt beds

Page 23: The Devonian of New York

Offshore in the Clastic Wedge:Offshore in the Clastic Wedge:Shale (with concretions)Shale (with concretions)

Page 24: The Devonian of New York

Examples of the rich Devonian faunaExamples of the rich Devonian fauna

Page 25: The Devonian of New York

Geologic Resources from the Geologic Resources from the Catskill Clastic WedgeCatskill Clastic Wedge

Page 26: The Devonian of New York

New York State:New York State:Birthplace of the US petroleum industryBirthplace of the US petroleum industry

Page 27: The Devonian of New York

Natural gas in Western New YorkNatural gas in Western New York

Page 28: The Devonian of 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

Page 29: The Devonian of New York

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