Conodont biostratigraphy of the Chattanooga Shale, Middle and Upper Devonian, southern Appalachian basin, eastern United States

2007 ◽  
Vol 81 (6) ◽  
pp. 1194-1217 ◽  
Author(s):  
D. Jeffrey Over
Keyword(s):  
United States ◽  
Appalachian Basin ◽  
Upper Devonian ◽  
Eastern United States ◽  
Conodont Biostratigraphy ◽  
Fine Grained ◽  
Southern Appalachian ◽  
Global Correlation ◽  
Chattanooga Shale ◽  
Conodont Fauna

The Chattanooga Shale of the southern Appalachian Basin contains a diverse conodont fauna of the high Givetian, Frasnian, and Famennian. The predominantly fine-grained strata were deposited in an offshore setting where depositional packages are separated by unconformities. Conodonts allow regional and global correlation of these strata, recognition of the Frasnian-Famennian boundary, and narrow biostratigraphic constraint of two Frasnian ash beds, MN Zone 8 for the Belpre Ash and upper MN Zone 13 for the Center Hill Ash. Three new Frasnian palmatolepid conodonts are described in open nomenclature, and the holotype ofPalmatolepis regularisCooper is reillustrated.

Protosalvinia Dawson and associated conodonts of the upper Trachytera Zone, Famennian, Upper Devonian, in the eastern United States

2009 ◽  
Vol 83 (1) ◽  
pp. 70-79 ◽  
Author(s):  
D. Jeffrey Over ◽  
Remus Lazar ◽  
Gordon C. Baird ◽  
Juergen Schieber ◽  
Frank R. Ettensohn
Keyword(s):  
United States ◽  
Appalachian Basin ◽  
Upper Devonian ◽  
Illinois Basin ◽  
Eastern United States ◽  
Southern Appalachian ◽  
Chattanooga Shale ◽  
New Albany Shale ◽  
Northern Appalachian Basin

Protosalvinia first occur in association with conodonts of the Upper trachytera Zone and below the Three Lick Bed in the Ohio Shale and the Ellicott Shale of the central and northern Appalachian Basin, as well as in the Clegg Creek Member of the New Albany Shale of the Illinois Basin. In the Chattanooga Shale of the southern Appalachian Basin, Protosalvinia are found no lower than the Upper marginifera Zone or associated with obviously reworked conodonts in the Middle expansa Zone. Regionally Protosalvinia are associated with a disconformity and may be found with conodonts of the Lower expansa Zone.

Fire history, related to climate and land use in three southern Appalachian landscapes in the eastern United States

2013 ◽  
Vol 23 (6) ◽  
pp. 1250-1266 ◽  
Author(s):  
William T. Flatley ◽  
Charles W. Lafon ◽  
Henri D. Grissino-Mayer ◽  
Lisa B. LaForest
Keyword(s):  
United States ◽  
Land Use ◽  
Fire History ◽  
Eastern United States ◽  
Southern Appalachian

Overview of the potential and identified petroleum source rocks of the Appalachian basin, eastern United States

2014 ◽  
Author(s):  
James L. Coleman ◽  
Robert T. Ryder ◽  
Robert C. Milici ◽  
Stephen Brown
Keyword(s):  
United States ◽  
Appalachian Basin ◽  
Source Rocks ◽  
Eastern United States

The Upper Devonian (Frasnian) conodont sequence in the Lime Creek Formation of north-central Iowa and comparison with Lime Creek ammonoid, brachiopod, foraminifer, and gastropod sequences

1990 ◽  
Vol 64 (4) ◽  
pp. 614-628 ◽  
Author(s):  
Jed Day
Keyword(s):  
United States ◽  
Species Composition ◽  
Northwest Territories ◽  
Upper Devonian ◽  
Western Canada ◽  
North Central ◽  
Conodont Zone ◽  
Lowermost Part ◽  
Conodont Fauna ◽  
First Time

The Upper Devonian (Frasnian) conodont fauna of the Lime Creek Formation of north-central Iowa is dominated by species of Polygnathus. Patterns of species composition and abundance are consistent with the Polygnathus biofacies described from the Frasnian of the Northwest Territories of western Canada. Consequently, the standard Frasnian conodont zones, defined on sequences developed in the Palmatolepis biofacies, are not applicable to the Lime Creek sequence. The Lime Creek conodont sequence correlates with Zones 4, 5 and Faunal Interval 7 of the Frasnian conodont sequence in the Alberta Rockies and with similar sequences in the southwestern United States. The Pb elements of Palmatolepis semichatovae Ovnatanova and Ancyrognathus? deformis (Anderson) are described and illustrated for the first time.In the Lime Creek Formation of north-central Iowa, brachiopods of the lowermost part of the Nervostrophia thomasi Zone of Day (1989a) occur in Zone 4, brachiopods of most of the N. thomasi, Douvillina arcuata, and Cyrtospirifer whitneyi Zones span conodont Zone 5, and the Elita inconsueta and Iowatrypa owenensis Zones occur in Faunal Interval 7. Species of the ammonoid Manticoceras and of the gastropods Floyda, Turbonopsis, and Westerna are restricted to Faunal Interval 7. Species of the calcareous foraminifer Nanicella first occur in Zone 5, and are joined by species of Multiseptida high in Zone 5.

scholarly journals Chemical and isotope compositions of shallow groundwater in areas impacted by hydraulic fracturing and surface mining in the Central Appalachian Basin, Eastern United States

2016 ◽  
Vol 71 ◽  
pp. 73-85 ◽  
Author(s):  
St. Thomas M. LeDoux ◽  
Anna Szynkiewicz ◽  
Anthony M. Faiia ◽  
Melanie A. Mayes ◽  
Michael L. McKinney ◽  
...  
Keyword(s):  
United States ◽  
Hydraulic Fracturing ◽  
Shallow Groundwater ◽  
Surface Mining ◽  
Appalachian Basin ◽  
Eastern United States

Conodonts from the Upper Olentangy Shale (Upper Devonian, central Ohio) and stratigraphy across the Frasnian-Famennian Boundary

2000 ◽  
Vol 74 (1) ◽  
pp. 101-112
Author(s):  
D. Jeffrey Over ◽  
Meredith K. Rhodes
Keyword(s):  
Middle Devonian ◽  
Appalachian Basin ◽  
Upper Devonian ◽  
Distal Margin ◽  
Type Section ◽  
Conodont Fauna

The Upper Olentangy Shale of Ohio, a green pyritic shale interbedded with thin dark gray shale beds, disconformably overlies the lithologically similar Middle Devonian Lower Olentangy Shale. The muds were deposited in a quiet offshore environment on the distal margin of the Appalachian Basin during the Late Frasnian through Early Famennian. The Upper Olentangy Shale contains abundant and diverse conodonts of MN Zone 13 and the Middle triangularis Zone. The Frasnian-Famennian boundary is 4-8 cm below the base of the Huron Shale at the Olentangy Shale type section in Delaware, Ohio. The boundary interval is a green shale containing a mixed highest Frasnian (e.g., Palmatolepis bogartensis, P. linguiformis) and lowest Famennian (e.g., P. delicatula, P. subperlobata, P. triangularis) conodont fauna. An ash horizon, pyritic bed, finely laminated dark shale, and a thin green-blue shale comprise the upper 3 cm of the Olentangy, and contain a conodont fauna indicative of the Middle triangularis Zone.

ProtosalviniaDawson and Associated Conodonts of the Upper Trachytera Zone, Famennian, Upper Devonian, in the Eastern United States

2009 ◽  
Vol 83 (1) ◽  
pp. 70-79 ◽  
Author(s):  
D. Jeffrey Over ◽  
Remus Lazar ◽  
Gordon C. Baird ◽  
Juergen Schieber ◽  
Frank R. Ettensohn
Keyword(s):  
United States ◽  
Upper Devonian ◽  
Eastern United States
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