Essays about: "faunal diversity"

Showing result 6 - 10 of 11 essays containing the words faunal diversity.

  1. 6. Changes in beyrichiid ostracode faunas during the Late Silurian Lau Event on Gotland, Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Rebecka Rääf; [2010]
    Keywords : Gotland; Late Silurian; Lau Event; ostracodes; Beyrichiidae; faunal turnovers; Sensilur; Laukatastrofen; ostrakoder; beyrichiider; faunaförändringar; Earth and Environmental Sciences;

    Abstract : This paper deals with how palaeocope ostracodes of the family Beyrichiidae, from the Silurian strata at Gotland were affected by the Late Silurian Lau Event. The Lau Event is associated with a positive carbon isotope excursion, lithology changes and faunal changes in accumulated strata related to sea-level changes and a glaciation in the Late Ludlow. READ MORE

  3. 7. Brachiopod faunal dynamics during the Silurian Ireviken Event, Gotland, Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Åsa Erlfeldt; [2006]
    Keywords : Ireviken Event; brachiopods; Lilliput; Silurian; Gotland; Lower Visby Formation; Upper Visby Formation; brachiopoder; Silur; Undre Visbyformationen; Övre Visbyformationen; Earth and Environmental Sciences;

    Abstract : The brachiopod fauna from parts of the Lower and Upper Visby formations on Gotland has been investigated through a combined outcrop and literature study. The strata of these formations were formed during the Ireviken Event, one of the severest identified oceanic events on Gotland, with diversity changes and extinctions among several groups of marine taxa. READ MORE

  4. 8. Sedimentary facies and fauna of the Late Silurian Bjärsjölagård Limestone Member (Klinta Formation), Skåne, Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Susanne Nilsson; [2006]
    Keywords : Bjärsjölagårdkalkstenen; Ludlow; sedimentära facies; faunadiversitet; Laukatastrofen; stratigrafisk korrelation; Skåne; The Bjärsjölagård Limestone Member; sedimentary facies; faunal diversity; Lau Event; stratigraphical correlation; Earth and Environmental Sciences;

    Abstract : Bjärsjölagårdkalkstenen i Skåne, södra Sverige, är av sen ludlowålder och utgör en del av Klintaformationen inom Öved-Ramsåsagruppen. Denna kalksten bildades under tiden för den globalt kända Laukatastrofen och ett kraftigt havsnivåfall i den Baltiska bassängen. READ MORE

  5. 9. Extinctions and faunal turnovers of early vertebrates during the Late Silurian Lau Event, Gotland, Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Eva K. Nilsson; [2005]
    Keywords : Lau Event; Late Silurian; Gotland; utdöenden; fjäll; vertebrater; Laukatastrofen; sensilur; early vertebrates; scales; extinctions; Earth and Environmental Sciences;

    Abstract : The Late Silurian Lau Event is one of the three major events identified in the Gotland strata. It is associated with one of the largest stable carbon isotope excursion recorded in the Phanerozoic, as well as rapid lithology changes, and extinctions and faunal turnovers among various fossil groups. READ MORE

  6. 10. The Late Silurian Lau Event and brachiopods from Gotland, Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Lena Gustavsson; [2005]
    Keywords : geography; geology; Late Silurian; Lau Event; brachiopods; Gotland; Sweden; Earth and Environmental Sciences;

    Abstract : The impact of the Ludfordian Lau Primo-Secundo Event on brachiopods from Gotland has been investigated. About 12 000 individuals were identified from five samples. The results are supplemented by an extensive literature study. On Gotland, the Lau Event spans the Botvide Mbr (uppermost När Fm, upper Hemse Group) and the Eke Fm. READ MORE