Carbon and sulfur isotope anomalies across the Frasnian-Famennian extinction boundary, Alberta, Canada

Wang, K.; Geldsetzer, H. H. J.; Goodfellow, Wayne D.; Krouse, H. R.

doi:10.1130/0091-7613(1996)024<0187:casiaa>2.3.co;2

Cited by 73 publications

(41 citation statements)

References 16 publications

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“…Buggisch and Joachimski, 2006), North Africa (Joachimski et al, 2002), North America (e.g. Wang et al, 1996), and China (Xu et al, 2003). The refined timing of the Upper Kellwasser excursion is consistent between multiple sections of our study, regardless of differing slope facies and paleogeographic settings.…”

Section: Discrepancy In Timingsupporting

confidence: 77%

“…This problem of low resolution is exacerbated by the tendency for authors to cite prior work in place of providing the actual biostratigraphic data (e.g. Wang et al, 1996;Joachimski et al, 2002;Xu et al, 2003;Stephens and Sumner, 2003), rendering chronostratigraphic comparisons at the zonal level difficult to assess. This problem of uneven sampling density is especially true for the Lennard Shelf where isotopic profiles for the Late Frasnian and Early Famennian appear to differ slightly from one another in the timing of their excursions (Figure 6).…”

Section: Discrepancy In Timingmentioning

confidence: 99%

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Upper Kellwasser carbon isotope excursion pre-dates the F–F boundary in the Upper Devonian Lennard Shelf carbonate system, Canning Basin, Western Australia

Hillbun

Playton

Tohver

et al. 2015

Palaeogeography, Palaeoclimatology, Palaeoecology

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Section: Discrepancy In Timingsupporting

confidence: 77%

Section: Discrepancy In Timingmentioning

confidence: 99%

Upper Kellwasser carbon isotope excursion pre-dates the F–F boundary in the Upper Devonian Lennard Shelf carbonate system, Canning Basin, Western Australia

Hillbun

Playton

Tohver

et al. 2015

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…Well-studied sections of this age contain a series of large-amplitude (2^3%) positive d 13 C excursions (e.g. ¢gure 5b), suggesting that the 4% net Devono-Carboniferous increase may have occurred in a stepwise manner, probably in association with individual episodes of black shale deposition (¢gure 2; Buggisch 1991; Halas et al 1992;Joachimski & Buggisch 1993;Wang et al 1996). High organic C £uxes are generally associated with the production and burial of reduced S as Fesulphides (Berner 1978;Berner & Raiswell 1983), and the Late Devonian is characterized by high burial rates of 34 Sdepleted sulphide S as shown by (1) strong C^S covariance in marine sediments (Leventhal 1987;Berner & Can¢eld 1989), and (2) an 8^10% positive excursion in the marine evaporite S-isotopic record between the Givetian and Mid-Mississippian (¢gure 5c; Holser et al 1989Holser et al , 1996.…”

Section: Terrestrial±marine Teleconnectionsmentioning

confidence: 99%

Terrestrial-marine teleconnections in the Devonian: links between the evolution of land plants, weathering processes, and marine anoxic events

Algeo

Scheckler

1998

Phil. Trans. R. Soc. Lond. B

613

347

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The Devonian Period was characterized by major changes in both the terrestrial biosphere, e.g. the evolution of trees and seed plants and the appearance of multi-storied forests, and in the marine biosphere, e.g. an extended biotic crisis that decimated tropical marine benthos, especially the stromatoporoid-tabulate coral reef community. Teleconnections between these terrestrial and marine events are poorly understood, but a key may lie in the role of soils as a geochemical interface between the lithosphere and atmosphere/ hydrosphere, and the role of land plants in mediating weathering processes at this interface. The e¡ective-ness of terrestrial £oras in weathering was signi¢cantly enhanced as a consequence of increases in the size and geographic extent of vascular land plants during the Devonian. In this regard, the most important palaeobotanical innovations were (1) arborescence (tree stature), which increased maximum depths of root penetration and rhizoturbation, and (2) the seed habit, which freed land plants from reproductive dependence on moist lowland habitats and allowed colonization of drier upland and primary successional areas. These developments resulted in a transient intensi¢cation of pedogenesis (soil formation) and to large increases in the thickness and areal extent of soils. Enhanced chemical weathering may have led to increased riverine nutrient £uxes that promoted development of eutrophic conditions in epicontinental seaways, resulting in algal blooms, widespread bottomwater anoxia, and high sedimentary organic carbon £uxes. Long-term e¡ects included drawdown of atmospheric pCO 2 and global cooling, leading to a brief Late Devonian glaciation, which set the stage for icehouse conditions during the Permo-Carboniferous. This model provides a framework for understanding links between early land plant evolution and coeval marine anoxic and biotic events, but further testing of Devonian terrestrial^marine teleconnections is needed.

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“…The F-F event of South China has been studied from the aspects of the mass extinction and biotic recovery [31,32] , biostratigraphy [33,34] , geochemical stratigraphy and isotope [23,25,[35][36][37][38][39] , sequence stratigraphy, cyclostratigraphy and eustatic changes [13,14] and so on. Comparatively, physical effect on the F-F event has not been sufficiently emphasized.…”

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confidence: 99%

Devonian Frasnian-Famennian transitional event deposits of Guangxi, South China and their possible tsunami origin

Gong

Zeng

et al. 2008

Sci. China Ser. D-Earth Sci.

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A suite of event deposits, isochronous and interrelated in origin, occurs widely near the FrasnianFamennian boundary in Guangxi, South China. It is mainly distributed in the facies areas of the platform-margin slope and inter-platform rift-trough. The rudstone or calcirudite occur in the Liujing section of Hengxian and Luoxiu and Baqi sections of Xiangzhou in the facies area of platform-margin slope. The turbidites are observed in the sections of Yangdi and Baisha of Guilin, Du'an of Debao, Nandong and Sanli of Wuxuan, Xiangtian, Ma'anshan of Xiangzhou, Nayi of Chongzuo, Yunpan of Shanglin in the facies area of inter-platform rift-trough. The massive homogenites occur in sections of Mangchang, Luofu and Road from Nandan to Tian'e and Ma'anshan etc in the facies area of inter-platform rift-trough. Herein event deposits can be correlated in stratohorizon to the turbidite in the bottom of the Lower triangularis Zone in Hony railroad cut of Belgium, Devils Gate of Nevada, USA, Atrous of Morocco, South Urals and Fore-Kolyma of northeastern Siberia of Russia, and erosional discontinuities and brecciation in the Frasnian-Famennian boundary in South Polish-Moravian shelf. The event deposits could be caused by a violent tsunami related to bolide impacts into ocean.

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Carbon and sulfur isotope anomalies across the Frasnian-Famennian extinction boundary, Alberta, Canada

Cited by 73 publications

References 16 publications

Upper Kellwasser carbon isotope excursion pre-dates the F–F boundary in the Upper Devonian Lennard Shelf carbonate system, Canning Basin, Western Australia

Upper Kellwasser carbon isotope excursion pre-dates the F–F boundary in the Upper Devonian Lennard Shelf carbonate system, Canning Basin, Western Australia

Terrestrial-marine teleconnections in the Devonian: links between the evolution of land plants, weathering processes, and marine anoxic events

Devonian Frasnian-Famennian transitional event deposits of Guangxi, South China and their possible tsunami origin

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