Sökning: "SILURIAN"

Visar resultat 11 - 15 av 39 avhandlingar innehållade ordet SILURIAN.

  1. 11. Studies on Silurian trilobites from Gotland, Sweden

    Författare :Lars Ramsköld; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Trilobites of five families (Cheiruridae, Odontopleuridae, Encrinuridae, Phacopidae and Dalmanitidae) are described from the Silurian of Gotland. Fifty-five species (fourty-four named, of which twenty are new) are assigned to seventeen genera, of which Radiurus is new. LÄS MER

  3. 12. Silurian and Ordovician bentonites of Gotland (Sweden)

    Författare :Sven Snäll; Stockholms universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  4. 13. Ecology and taxonomy of Silurian crinoids from Gotland

    Författare :Christina Franzén; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  5. 14. Stromatoporoids from the Silurian of Gotland and Scania

    Författare :Kei Mori; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  7. 15. Geochemical and sedimentary signatures of Phanerozoic events

    Författare :Jane Wigforss-Lange; Berggrundsgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; geokemi; Sedimentology; Petrology; mineralogy; geochemistry; Petrologi; mineralogi; Carbon and oxygen isotopes; Jurassic-Cretaceous boundary; K-T boundary; Late Silurian; Events; Trace elements; Sedimentologi;

    Sammanfattning : Geological and biological catastrophic events have occurred repeatedly in the Earth's history, leaving traces in the global stratigraphical record in the form of sedimentary features, geochemical anomalies and biotic turnovers. This thesis focuses on the sedimentological and geochemical signatures of several key events in the Phanerozoic stratigraphical record, and aims to interpret the different signals and the causal mechanisms behind each of these events. LÄS MER