Sökning: "paleoenvironment"

Visar resultat 1 - 5 av 8 avhandlingar innehållade ordet paleoenvironment.

  1. 1. Single fluid inclusion analysis using ToF-SIMS Implications for ancient Earth biodiversiy and paleoenvironment studies

    Detta är en avhandling från Stockholm : Department of Geological Sciences, Stockholm University

    Författare :Sandra Siljeström; Stockholms universitet.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ToF-SIMS; time-of-flight secondary ion mass spectrometry; fluid inclusions; biomarkers; hopanes; steranes; early life; paleoenvironment; oil; eukaryotes; NATURAL SCIENCES Earth sciences; NATURVETENSKAP Geovetenskap; Geochemistry; geokemi;

    Sammanfattning : When and how life first emerged on the Earth is an area of intense research. Signs of the first life on Earth, including morphological fossils, are scarce and hard to interpret. An alternative approach is to study organic biomarkers, which are molecular fossils commonly considered as bona fide biosignatures. LÄS MER

  2. 2. Paleoenvironmental and paleoclimatic changes in northeast Thailand during the Holocene

    Detta är en avhandling från Stockholm : Department of Geological Sciences, Stockholm Univeristy

    Författare :Sakonvan Chawchai; Stockholms universitet.; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Paleoenvironment; paleoclimatic; sediment; peat; multi-proxy; Asian monsoon; the Holocene; maringeologi; Marine Geology;

    Sammanfattning : The long-term climatic and environmental history of Southeast Asia is still fragmentary. This thesis therefore aims at studying lake sediment/peat sequences using a multi-proxy approach to reconstruct the environmental history and the impact of past changes in monsoon variability and intensity on lake ecosystems in Thailand. LÄS MER

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

    Detta är en avhandling från Lund University, Faculty of Science, Department of Geology, Lithosphere and Biosphere Science

    Författare :Anders Lindskog; Lund University.; Lunds universitet.; [2017-02]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 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. 4. Neogene lacustrine deposits in the inland basins of northern Greece : stratigraphy, paleoenvironment, paleomagnetism and industrial usefulness

    Detta är en avhandling från Stockholm

    Författare :Panagiotis Kirittopoulos; Stockholms universitet.; [1984]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  5. 5. Paleoenvironment of the autochthonous sedimentary rock sequence at Laisvall, Swedish Caledonides

    Detta är en avhandling från Stockholm : Almqvist & Wiksell

    Författare :Mats Y. Willdén; Stockholms universitet.; [1980]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER