Sökning: "Ludlow"

Visar resultat 1 - 5 av 7 uppsatser innehållade ordet Ludlow.

  1. 1. Carbon isotope chemostratigraphy of the Late Silurian Lau Event, Gotland, Sweden

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Hani Younes; [2012]
    Nyckelord :high-resolution correlation; conodonts; carbon isotope excursion; Gotland; extinction; Silurian; Lau Event; microbial resurgence; Earth and Environmental Sciences;

    Sammanfattning : The positive δ13C excursion associated with the Late Silurian Lau Event (approximately 420 Ma) is recognized globally and considered to be one of the most prominent carbon isotope excursions of the Phanerozoic. Its maximum values are exceeded only by values from the Proterozoic. LÄS MER

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

    Magister-uppsats, Lunds universitet/Geologiska institutionen

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

    Sammanfattning : 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. LÄS MER

  4. 3. The spore record of early land plants from upper Silurian strata in Klinta 1 well, Skåne, Sweden

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Kristina Mehlqvist; [2009]
    Nyckelord :Silurian; spores; flora; palynology; Klinta 1 drillcore; silur; sporer; palynologi; Klinta borrkärna 1; Earth and Environmental Sciences;

    Sammanfattning : Prover från Öved-Ramsåsagruppen i Skåne från övre Silur har undersökts palynologiskt, främst med avseende på sporer från landväxter. Sedimenten består av karbonater med silisiklastiskt innehåll och paleomiljön har tolkats till ett strandnära marint ekosystem. LÄS MER

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

    Magister-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Susanne Nilsson; [2006]
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

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

    Magister-uppsats, Lunds universitet/Geologiska institutionen

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

    Sammanfattning : 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. LÄS MER