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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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North America
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Appalachian Basin (4)
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Appalachians
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Appalachian Plateau (1)
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Catskill Mountains (1)
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Valley and Ridge Province (1)
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Great Lakes region (1)
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United States
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Allegheny Front (1)
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Catskill Delta (2)
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New York
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Broome County New York (1)
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Catskill Mountains (1)
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Cayuga County New York (1)
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Cortland County New York (1)
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Erie County New York (3)
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Finger Lakes
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Cayuga Lake (1)
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Seneca Lake (1)
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Genesee County New York (1)
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Ontario County New York (2)
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Schuyler County New York (1)
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Seneca County New York (1)
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Tompkins County New York
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Ithaca New York (1)
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Wyoming County New York (1)
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Yates County New York (1)
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Pennsylvania
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Huntingdon County Pennsylvania (1)
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elements, isotopes
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carbon
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chemical ratios (1)
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fossils
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borings (1)
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burrows (2)
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Vertebrata (1)
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ichnofossils (1)
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Invertebrata
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Brachiopoda (3)
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Echinodermata
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Mollusca
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Dacryoconarida (1)
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Vermes
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microfossils
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Conodonta (2)
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problematic fossils (1)
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geologic age
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Paleozoic
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Devonian
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Genesee Group (13)
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Middle Devonian
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Givetian (1)
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Hamilton Group (1)
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Ludlowville Formation (1)
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Tully Limestone (2)
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Upper Devonian
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Brallier Shale (1)
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minerals
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sulfides
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pyrite (1)
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Primary terms
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carbon
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C-13/C-12 (1)
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Chordata
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data processing (1)
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diagenesis (1)
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fractures (1)
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geochemistry (1)
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ichnofossils (1)
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Cnidaria
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Echinodermata
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Crinozoa
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Crinoidea (1)
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Mollusca
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Bivalvia (1)
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Cephalopoda
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Ammonoidea (1)
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Dacryoconarida (1)
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Gastropoda
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Pteropoda (1)
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Vermes
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Annelida (1)
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isotopes
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stable isotopes
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C-13/C-12 (1)
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North America
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Appalachian Basin (4)
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Appalachians
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Appalachian Plateau (1)
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Catskill Mountains (1)
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Valley and Ridge Province (1)
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Great Lakes region (1)
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orogeny (1)
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paleobotany (1)
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paleoclimatology (1)
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paleoecology (2)
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paleontology (3)
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Paleozoic
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Devonian
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Genesee Group (13)
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Middle Devonian
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Givetian (1)
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Hamilton Group (1)
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Ludlowville Formation (1)
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Tully Limestone (2)
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Upper Devonian
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Brallier Shale (1)
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Frasnian (2)
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petrology (1)
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problematic fossils (1)
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sea-level changes (3)
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sedimentary petrology (2)
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sedimentary rocks
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carbonate rocks
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limestone (1)
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clastic rocks
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black shale (1)
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mudstone (3)
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shale (1)
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siltstone (1)
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sedimentary structures
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biogenic structures
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bioturbation (2)
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graded bedding (1)
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planar bedding structures
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laminations (2)
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ripple drift-cross laminations (1)
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secondary structures
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concretions (2)
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soft sediment deformation
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convoluted beds (1)
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sedimentation (4)
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sediments
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carbonate sediments (1)
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stratigraphy (3)
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United States
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Allegheny Front (1)
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Catskill Delta (2)
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New York
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Broome County New York (1)
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Catskill Mountains (1)
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Cayuga County New York (1)
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Cortland County New York (1)
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Erie County New York (3)
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Finger Lakes
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Cayuga Lake (1)
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Seneca Lake (1)
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Genesee County New York (1)
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Ontario County New York (2)
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Schuyler County New York (1)
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Seneca County New York (1)
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Tompkins County New York
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Ithaca New York (1)
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Wyoming County New York (1)
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Yates County New York (1)
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Pennsylvania
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Huntingdon County Pennsylvania (1)
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sedimentary rocks
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sedimentary rocks
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carbonate rocks
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limestone (1)
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clastic rocks
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black shale (1)
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mudstone (3)
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shale (1)
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siltstone (1)
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siliciclastics (1)
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sedimentary structures
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borings (1)
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burrows (2)
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sedimentary structures
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biogenic structures
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bioturbation (2)
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graded bedding (1)
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planar bedding structures
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laminations (2)
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ripple drift-cross laminations (1)
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secondary structures
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concretions (2)
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soft sediment deformation
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convoluted beds (1)
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sediments
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sediments
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carbonate sediments (1)
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siliciclastics (1)
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Genesee Group
ABSTRACT Zone-diagnostic Middle to Upper Devonian ammonoids and conodonts occur in a sequence of thin carbonate beds in siliciclastic sections along the Allegheny front and northern fold belt of central Pennsylvania. The lowest, in the upper Tully Formation, and the succeeding four in the Harrell Shale, are southward continuations of marker beds long known in the Tully Limestone and overlying basin, slope, and shelf facies of the Genesee Group of New York State. These pelagic beds are Appalachian Basin signals of transgressive condensed intervals within global high-sea-level episodes and are associated with a worldwide biotic overturn in the tropical marine realm. The Upper Givetian Tully Pharciceras amplexum bed has close lithic and faunal equivalents in the Taghanic biocrisis interval in Morocco and southern Europe. The Lower Frasnian styliolinid upper Genundewa Limestone, with the entry of Manticoceras , and, in the succeeding dark West River Shale, the Bluff Point Bed, with the entry of late Koenenites and early palmatolepid conodonts, are Appalachian highstand signals of the worldwide Timan bioevent transgression recognized in Western Australia, the Russian Platform, southern Europe, Morocco, western Canada, and now Pennsylvania. The widespread occurrences of discrete ammonoid beds, even in the more proximal or shoreward sedimentary settings of the Catskill Delta, reinforce the view that they accumulated under conditions of sequestered sediment supply when transgressions flooded the newly vegetated and deep-root-forested delta flats. As such, they overprinted or interrupted the westward progradation of siliciclastic sediments generated by mountain-building tectophases of the Acadian orogeny. The Lower Frasnian ammonoid Epitornoceras dennisoni n. sp., described herein, from the Crosby Beds in the Harrell Shale at Milesburg, Pennsylvania, is named in honor of John Dennison.
Association Between Wave- and Current-aided Hyperpycnites and Flooding Surfaces in Shelfal Mudstones: an Integrated Sedimentologic, Sequence Stratigraphic, and Geochemical Approach
Sediment transport processes and lateral facies gradients across a muddy shelf: Examples from the Geneseo Formation of central New York, United States
Muddy Prodeltaic Hyperpycnites In the Lower Genesee Group of Central New York, USA: Implications For Mud Transport In Epicontinental Seas
New perspectives on transitions between ecological-evolutionary subunits in the “type interval” for coordinated stasis
Mechanisms controlling rupture shape during subcritical growth of joints in layered rocks
The conodont genus Ancyrodella in the middle Genesee Formation (lower Upper Devonian, Frasnian), western New York
Viriatellina (Dacryoconarida) from the Middle Devonian Ludlowville Formation at Alden, New York
Reworking of Sedimentary Pyrite on Euxinic Sea Floors, Devonian, Western New York: ABSTRACT
Condensed Sedimentary Sequence and Associated Submarine Hiatus Within a Cratonic Basin Setting—Case Study of Upper Devonian Genundewa Limestone of New York: ABSTRACT
Substrate specificity of Devonian epizoa
Proximal Continental Rhythmic Sequences in the Genesee Group (Lower Upper Devonian) of Southeastern New York
Rhythmic continental sequences characterize the proximal Genesee Group (Upper Devonian) in southeastern New York, which are interpreted as the remnant elements of a sequence of coastal-plain and upland fluvial deposits. A rhythm consists of a braided pattern of coarse conglomeratic channel-fill, a composite of point-bar, channel-fill, and overbank sandstones, and overbank, mudflat, and general flood plain accumulations of siltstones and mudrocks. Widespread lateral variability, rapid vertical change, channel depths of more than 30 feet, and textural mapping suggest a significant fall-line scarp close to the east of the present outcrop limit. Various aspects of the natural rhythmic sequences of the Genesee Group have been synthesized and examined using simulation techniques.