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The late Devonian Standard Conodont Zonation

Published on Jun 30, 1990
Willi Ziegler12
Estimated H-index: 12
,
Charles A. Sandberg22
Estimated H-index: 22
Abstract
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  • Citations (260)
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In Sardinia (Italy) two sections, located in the southeastern part of the island, expose the Devonian/Carboniferous Boundary: the Monte Taccu Section and the Bruncu Bullai section. Both expose limestones from the middle Famennian to the lower Tournaisian Siphonodella jii Zone. The limestone sequence is interrupted by a thin level of shales representing the Hangenberg Event. Data on conodont biostratigraphy and magnetic susceptibility across the Devonian/Carboniferous Boundary are here summarised...
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#1Krzysztof Broda (University of Silesia in Katowice)H-Index: 3
#2Leszek Marynowski (University of Silesia in Katowice)H-Index: 27
Last. Michał Zatoń (University of Silesia in Katowice)H-Index: 21
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The lowermost Famennian deposits of the Kowala quarry (Holy Cross Mountains, Poland) are becoming famous for their rich fossil content such as their abundant phosphatized arthropod remains (mostly thylacocephalans). Here, for the first time, palaeontological and geochemical data were integrated to document abundance and diversity patterns in the context of palaeoenvironmental changes. During deposition, the generally oxic to suboxic conditions were interrupted at least twice by the onset of phot...
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#1Xinsong Zhang (China University of Geosciences)H-Index: 1
#2D. Jeffrey Over (State University of New York at Purchase)H-Index: 3
Last. Yiming Gong (China University of Geosciences)H-Index: 10
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Abstract The Lali section (Guangxi Province, South China) is composed of quiet-water carbonates containing abundant conodonts, which allowed recognition of 12 Frasnian and 20 Famennian biozones. The Kellwasser and annulata events are characterized by transgressive black carbonates, while the Hangenberg Event is represented by black shale deposits. Other transgressive events recognized at Lali include the Middlesex, Nehden, Enkeberg, and Dasberg, as well as the Strunian transgression. Four regres...
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#1Zhenzhu Wan (UC: University of Cincinnati)H-Index: 1
#2Thomas J. Algeo (UC: University of Cincinnati)H-Index: 31
Last. Peter E. Sauer (IU: Indiana University Bloomington)H-Index: 15
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Abstract Systematic analysis of the stable carbon isotopic composition of fossil land plants (δ13Cp) has the potential to offer new insights regarding paleoclimate variation and plant-environment interactions in early terrestrial ecosystems. δ13Cp was measured for 190 fossil plant specimens belonging to 10 genera of Early to Late Devonian age (Archaeopteris, Drepanophycus, Haskinsia, Leclercqia, Pertica, Psilophyton, Rhacophyton, Sawdonia, Tetraxylopteris, and Wattieza) and 2 genera of Early Car...
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#1Ali Bahrami (UI: University of Isfahan)H-Index: 6
#2Peter Königshof (AMNH: American Museum of Natural History)H-Index: 11
Last. Iliana Boncheva (BAS: Bulgarian Academy of Sciences)H-Index: 8
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The Middle to Upper Devonian Kuh-e-Bande-Abdol-Hossein section in eastern Central Iran is an overall shallow marine, nearshore to open marine facies setting that contains a highly variable conodont record generally characterised by an Icriodid-Polygnathid biofacies. The lithology and the palaeoenvironmental setting is similar to other localities in Central Iran and exhibits numerous hiatuses. A continuous biostratigraphic record could not be established, but the section preserves the Givetian/Fr...
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#1Zhang Xinsong (China University of Geosciences)
#1Xinsong Zhang (China University of Geosciences)H-Index: 1
Last. Yiming Gong (China University of Geosciences)H-Index: 10
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Abstract We present a new biostratigraphically constrained carbon isotope record from the Lali section (South China) to document perturbations in the Late Devonian carbon cycle. Positive carbon isotope excursions (CIEs) are most important components of the Late Devonian long-term carbon isotope cycle: Frasnes (+2‰), Middlesex (+1‰), Lower Kellwasser (+3‰), Upper Kellwasser (+3‰) and Upper annulata (+1‰) events, as well as a small positive CIE (+1‰) in the Famennian expansa-aculeatus zones were r...
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#1Carl W. Stock (UA: University of Alabama)H-Index: 9
#2Charles A. Sandberg (USGS: United States Geological Survey)H-Index: 22
Abstract We document the signature of the late Famennian (Early expansa Zone) multi-phase Dasberg Event, previously termed ALFIE, in Utah and Colorado. The Dasberg was a major event, not a crisis, because it resulted from a eustatic rise that introduced the Etroeungt fauna, consisting of large solitary rugose corals and unusually large brachiopods, from an as yet undiscovered refugium. This “Lazarus” fauna was short-lived; it disappeared within a few million years, as a result of the more intens...
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#1D. Jeffrey Over (State University of New York at Geneseo)H-Index: 4
#2Emily Hauf (State University of New York at Geneseo)H-Index: 1
Last. Thomas J. Algeo (UC: University of Cincinnati)H-Index: 31
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Abstract Recognition of stratigraphic hiatuses in fine-grained siliciclastic sedimentary rocks can be challenging but is feasible using high-resolution biostratigraphic and chemostratigraphic data within a regional correlation framework. In this case study of the Upper Devonian Chattanooga Shale in the Dupont GHS drillcore from the western margin of the Nashville Dome, the Upper Devonian Chattanooga Shale comprises several depositional units separated by intraformational hiatuses. These features...
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#1Gary G. Lash (SUNY: State University of New York System)H-Index: 11
Abstract A modest positive stable carbon isotope excursion coincident with the Upper Devonian Middlesex Formation of western New York State and beneath the Palmatolepis transitans - Palmatolepis punctata zonal boundary is interpreted to define the beginning of the Middle Frasnian punctata Event. The broad positive excursion that defines this global isotopic event elsewhere, however, appears to have been muted in the northern Appalachian Basin by a tectonically induced regression and associated d...
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#1V. M. Nazarova (MSU: Moscow State University)H-Index: 1
#2L. I. Kononova (MSU: Moscow State University)H-Index: 1
Last. E. L. Zaytseva (MSU: Moscow State University)
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