Extent and duration of marine anoxia during the Frasnian–\ud Famennian (Late Devonian) mass extinction in Poland,\ud Germany, Austria and France

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Bond, D.P.G. ; Wignall, P.B. ; Racki, G. (2004)

Abstract – The intensity and extent of anoxia during the two Kellwasser anoxic events has been\ud investigated in a range of European localities using amultidisciplinary approach (pyrite framboid assay,\ud gamma-ray spectrometry and sediment fabric analysis). The results reveal that the development of the\ud Lower Kellwasser Horizon in the early Late rhenana Zone (Frasnian Stage) in German type sections\ud does not always coincide with anoxic events elsewhere in Europe and, in some locations, seafloor\ud oxygenation improves during this interval. Thus, this anoxic event is not universally developed. In\ud contrast, the Upper Kellwasser Horizon, developed in the Late linguiformis Zone (Frasnian Stage) in\ud Germany correlates with a European-wide anoxic event that is manifest as an intensification of anoxia\ud in basinal locations to the point that stable euxinic conditionswere developed (for example, in the basins\ud of the Holy Cross Mountains, Poland). The interval also saw the spread of dysoxic waters into very\ud shallow water (for instance, reefal) locations, and it seems reasonable to link the contemporaneous\ud demise of many marine taxa to this phase of intense and widespread anoxia. In basinal locations,\ud euxinic conditions persisted into the earliest Famennian with little change of depositional conditions.\ud Only in the continental margin location of Austria was anoxia not developed at any time in the Late\ud Devonian. Consequently it appears that the Upper Kellwasser anoxic event was an epicontinental\ud seaway phenomenon, caused by the upward expansion of anoxia from deep basinal locales rather than\ud an ‘oceanic’ anoxic event that has spilled laterally into epicontinental settings.
  • References (69)
    69 references, page 1 of 7

    BALIN´ SKI, A. 2002. Frasnian-Famennian brachiopod extinction and recovery in southern Poland. Acta Palaeontologica Polonica 47(2), 289-305.

    BECKER, R. T. 1993. Anoxia, eustatic changes, and the Upper Devonian to lowermost Carboniferous global ammonoid diversity. In The ammonoidea: environments, ecology and evolutionary change (ed. M. R. House), pp. 115- 63. Systematics Association Special vol. 47.

    BECKER, R. T., FEIST, R., FLAJS, G., HOUSE, M. R. & KLAPPER, G. 1989. Frasnian-Famennian extinction events in the Devonian at Coumiac, southern France. Compte Rendus Academie Science, Paris serie 2, 259- 66.

    BECKER, R. T. & HOUSE, M. R. 1994. Kellwasser events and goniatite successions in the Devonian of the Montagne Noire with comments on possible causations. Courier Forschungsinstitut Senckenberg 169, 45-77.

    BECKER, R. T., HOUSE, M. R., KIRCHGASSER, W. T. & PLAYFORD, P. E. 1991. Sedimentary and faunal changes across the Frasnian/Famennian boundary in the Canning Basin of Western Australia. Historical Biology 5, 183- 96.

    BRATTON, J. F., BERRY, W. B. N. & MORROW, J. R. 1999. Anoxia pre-dates Frasnian-Famennian boundary mass extinction horizon in the Great Basin, USA. Palaeogeography, Palaeoclimatology, Palaeoecology 154, 275-92.

    BRETT, C. E. & BAIRD, G. C. 1995. Coordinated stasis and evolutionary ecology of Silurian to Middle Devonian faunas in the Appalachian Basin. In New approaches to speciation in the fossil record (eds D. H. Erwin and R. L. Anstey), pp. 285-315. Columbia University Press.

    BUGGISCH, W. 1972. Zur Geologie und Geochemie der Kellwasserkalke und ihrer Begleitsedimente (Unteres Oberdevon). Hessisches Landesamt fu¨r Bodenforschung, Abhandlungen 62, 1-68.

    BUGGISCH, W. 1991. The global Frasnian-Famennian “Kellwasser Event”. Geologische Rundschau 80, 49-72.

    CASIER, J.-G. 1987. Etude biostratigraphique et pale´oe´cologique des ostracodes du re´cif de marbre rouge du Hautmont a` Vodele´e (partie supe´rieure du Frasnien, Bassin de Dinant, Belgique). Revue de Pale´obiologie 6, 193-204.

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