Sökning: "Lau Event"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Lau Event.

  1. 1. An interpretation of oncoid mass-occurrence during the Late Silurian Lau Event, Gotland, Sweden

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Martin Qvarnström; [2012]
    Nyckelord :Bjärsjölagård; Gotland; microbialites; Silurian; Oncoids; Lau Event; ecological crisis; Onkoider; Silur; microbialiter; ekologisk kris; Earth and Environmental Sciences;

    Sammanfattning : The geological significance of the microbial-formed oncoid is not as well understood as the recognized, analogous stromatolite but can, as well be used as an environmental indicator. In association with the larger Phanerozoic mass extinctions, a resurgence of microbialites as a disaster fauna is at present an accepted view. LÄS MER

  3. 2. Dividend decision in closely held companies - An event study of the Swedish 3:12 chapter tax code changes on Jan 1, 2006

    C-uppsats, Handelshögskolan i Stockholm/Institutionen för finansiell ekonomi

    Författare :Mikael Lau; Pontus Norell; [2012]
    Nyckelord :3:12 rules; Closely held companies; Dividends; Dividend decision; Swedish tax policy change;

    Sammanfattning : In Sweden, owners of closely held companies are subject to a special set of tax rules regarding dividends and capital gains. The 3:12 rules that regulate the taxation of owners of closely held companies were implemented in 1991 alongside a dual tax system with different tax rates for investment income and labour income. LÄS MER

  4. 3. 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

  5. 4. 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

  7. 5. On density and pressure variations in the solar wind plasma

    Master-uppsats, KTH/Rymd- och plasmafysik

    Författare :Martin Jonson; [2007]
    Nyckelord :;

    Sammanfattning : A study of ACE solar wind data at lAU, for the period from 1998 to early 2005, was conducted. This was done in order to find sudden solar wind pressure enhancements accounting for plasma transfer through the magnetopause. LÄS MER