Sulfur-isotope anomaly associated with the Frasnian-Famennian extinction, Medicine Lake, Alberta, Canada

Geldsetzer, H. H. J.; Goodfellow, Wayne D.; McLaren, D. J.; Orchard, M. J.

doi:10.1130/0091-7613(1987)15<393:saawtf>2.0.co;2

Cited by 62 publications

(21 citation statements)

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“…2: Appendix) are derived from a combination of the results of analyses presented herein for the Cambrian, which is treated as a smoothed function for the time interval from 510 to 545 Ma, for the Triassic which is treated as a single value (0.028&), and for previously published data presented in Johnston et al (2005a) (Cambrian) and Domagal-Goldman et al (2008) (Pennsylvanian), as well as in Rouxel et al (2008) (Jurassic). The D 33 S of present-day Anderson and Kruger (1987), Anderson et al (1989), Beier and Feldman (1991), Beier and Hayes (1989), Bottomley et al (1992), Bottrell and Morton (1992), Bottrell and Raiswell (1989), Briggs et al (1991Briggs et al ( , 1996, Burnie et al (1972), Farquhar (2009), Coveney andShaffer (1988), Dill and Neilsen (1986), Dinur et al (1980), Fike andGrotzinger (2008), Fisher (1986), Fisher and Hudson (1987), Gautier (1985a,b), Geldsetzer et al (1987), Gorjan et al (2000), Hattori et al (1983), Hurtgen et al (2006), Jowett et al (1991), Kajiwara and Kaiho (1992), Knoll (1992), Logan et al (1999), Marowsky (1969), Murowchick et al (1994), Prokoph et al (2008), Railsbeck (1989), Raiswell et al (1993), Rickard et al (1979), Ripley and Nicol (1981), …”

Section: Data Compilationmentioning

confidence: 97%

Evaluating the S-isotope fractionation associated with Phanerozoic pyrite burial

Farquhar

Strauß

et al. 2010

Geochimica et Cosmochimica Acta

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Section: Data Compilationmentioning

confidence: 97%

Evaluating the S-isotope fractionation associated with Phanerozoic pyrite burial

Farquhar

Strauß

et al. 2010

Geochimica et Cosmochimica Acta

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“…Although the biotic crisis and related marine events have been attributed to a range of factors, e.g. bolide impacts, tectonism and climate change, oceanic overturn, and eustatic £uctuations (McLaren 1982;Wilde & Berry 1984;Johnson et al 1985;Copper 1986;Geldsetzer et al 1987;Ettensohn et al 1988a;Wang 1992), few if any of these proposals have attempted to link Devonian marine phenomena to coeval developments in the terrestrial realm. Algeo et al (1995) presented the hypothesis that the Middle-to-Late Devonian biotic crisis, and related events in the marine realm, were precipitated by the evolutionary development of vascular land plants.…”

Section: Introductionmentioning

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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“…15 Palmatolepis falcata (Helms, 1959): specimen 06P-3-15. All scale bars are 200 μm; and more saline waters (either colder or warmer, according to different authors: Geldsetzer et al 1987Geldsetzer et al , 1988Wilde et al 1988;Becker and House 1994; among others). These palaeoceanographic changes would have been triggered by a rapid fall in sea level after the Late Devonian highstand, related either to bolide impacts or to tectonic events (Sandberg et al 1988(Sandberg et al , 2002House 2002;Racki 1998;Averbuch et al 2005; among others).…”

Section: Discussionmentioning

confidence: 99%

The Frasnian Upper Kellwasser event and a lower Famennian stratigraphic gap in Calabria (southern Italy)

Navas‐Parejo

Rodríguez-Cañero

Somma

et al. 2009

Palaeobio Palaeoenv

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The identification of three late Frasnian conodont biozones , as defined in the Montagne Noire, France) and of several Famennian conodont biozones (Early, Late, and Latest marginifera, and Late postera zones of the standard zonation) in the Palaeozoic record of the Stilo Unit (southern Calabria, southern Italy) indicates the existence of a stratigraphic gap during the early Famennian (triangularis, crepida and rhomboidea zones). In the studied section, this gap occurs above a thin, black, pelitic horizon that appears just on top of the uppermost sample dated as late Frasnian. The conodonts obtained from the beds underlying this black horizon are all highly pyritized, unlike the few Famennian conodonts found in the limestone bed immediately overlying this horizon, which is richer in organic matter. Both stratigraphic features (the black pelitic horizon and the gap in the conodont record) are interpreted as being related to the Upper Kellwasser Anoxic Event. These new data indicate that this important biotic crisis was also evident in the pelagic environments of the Palaeozoic succession of the Stilo Unit at the very end of the Frasnian.

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Sulfur-isotope anomaly associated with the Frasnian-Famennian extinction, Medicine Lake, Alberta, Canada

Cited by 62 publications

References 0 publications

Evaluating the S-isotope fractionation associated with Phanerozoic pyrite burial

Evaluating the S-isotope fractionation associated with Phanerozoic pyrite burial

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

The Frasnian Upper Kellwasser event and a lower Famennian stratigraphic gap in Calabria (southern Italy)

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