Sökning: "geokemiska lager"

Hittade 4 avhandlingar innehållade orden geokemiska lager.

  1. 1. The Baltic Sea from the present to future : microbial carbon & nutrient cycling in a changing climate

    Författare :Laura Seidel; Mark Dopson; Jarone Pinhassi; Ashfaq Ali; Stefan Hulth; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Climate change; coastal sediments; Baltic Sea; eutrophication; bacterial communities; 16S rRNA; metatranscriptomics; geochemical layers; diversity; nutrient- energy cycling; Klimawandel; Küstensediment; Ostsee; Eutrophierung; Bakterielle Gemeinschaften; 16S rRNA.; Metatranskriptome; Geochemische Schichten; Diversität; Nährstoff- Energiezyklus.; Klimatförändringar; bottensediment; kust; Östersjön; eutrofiering; mikrobiella samhällen; 16S rRNA; metatranskriptomik; geokemiska lager; diversitet; närsalts- och energiflöden; Akvatisk ekologi; Aquatic Ecology; Miljövetenskap; Environmental Science;

    Sammanfattning : Climate Change is caused by the accelerated increase of anthropogenic greenhousegas emissions to the atmosphere and affects all ecosystems on our planet. A resultof higher CO2 uptake by the oceans as well as an increase of heat trapped in theatmosphere leads to, for example acidification, stratification, sea-level rise, oxygenloss, and temperature increase of the earth’s waterbodies. LÄS MER

  3. 2. Early–Middle Ordovician biotic and sedimentary dynamics in the Baltoscandian paleobasin

    Författare :Anders Lindskog; Berggrundsgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ordovician; ‘orthoceratite limestone’; carbonate sedimentology; microfacies; paleoecology; paleoenvironment; paleontology; Baltoscandia;

    Sammanfattning : The Baltoscandian region forms part of the paleocontinent Baltica, which was largely covered by a shallow epeiric sea throughout much of the Ordovician (c. 485.5–444 Ma). This ancient sea is today recorded by a thin succession of sedimentary rocks. LÄS MER

  4. 3. Tectonic implications of ca. 1.45 Ga granitoid magmatism at the southwestern margin of the East European Craton

    Författare :Audrius Cecys; Berggrundsgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Geologi; southern Sweden; fysisk geografi; physical geography; Mesoproterozoic; geochemistry; syntectonic; petrology; structural geology; anisotropy of magnetic susceptibility; Danopolonian orogeny; Geology; granite;

    Sammanfattning : Between ca 1.53 and 1.40 Ga, the southwestern margin of the East European Craton was subjected to extensive magmatism and deformation. While various suites of anorthositic, mangeritic and charnockitic-granitic rocks were emplaced between ca. LÄS MER

  5. 4. Silurian Carbonate Platforms of Gotland, Sweden - Archives of Local, Regional and Global Environmental Changes

    Författare :Mårten Eriksson; Berggrundsgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sedimentologi; Sedimentology; fysisk geografi; Geologi; physical geography; Geology; Gotland; Silurian; Facies; Carbonate platforms; Sequence stratigraphy; Stable isotopes; Palaeoclimate;

    Sammanfattning : This thesis treats the Silurian carbonate platforms of Gotland, Sweden, which formed close to the equator within the East Baltic Basin. Three different time intervals, all involving changes in facies composition and structure of the platforms, have been studied; Late Homerian, latest Homerian ? earliest Gorstian, and late Ludfordian, respectively. LÄS MER