Sökning: "kvarts"

Visar resultat 6 - 10 av 81 uppsatser innehållade ordet kvarts.

  1. 6. Petrography of impactites from the Dellen impact structure, Sweden

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Robert Mroczek; [2023]
    Nyckelord :Dellen; Impact; structure; magnetite; apatite; shock waves; shock-metamorphic; features; Impactite; petrography; scanning electron microscope; SEM; geology; Earth and Environmental Sciences;

    Sammanfattning : Identification and characterization of shock-metamorphic features in hypervelocity impact craters is important for our understanding of how shock waves interact with geologic materials and how impact craters form, which in turn is essential to our understanding of what role impact cratering played in the development of our solar system. Of particular interest are accessory minerals like apatite, which contains various volatiles that can affect the atmosphere of a body, or magnetite whose magnetic properties constitute a remote sensing indicator which allows us to study and understand the internal structures of distant bodies. LÄS MER

  3. 7. Grön fältspat i Varbergskomplexet

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Lara Schönherr; [2022]
    Nyckelord :färg; charnockit; fältspat; Varberg; optisk mineralogi; geokemi; Earth and Environmental Sciences;

    Sammanfattning : Den kända Varbergscharnockiten från Hallandskusten är en granitisk, pyroxenförande bergart som har både magmatiska och metamorfa drag. Bergarten har deformerats och omkristalliserats under högmetamorfa förhållanden men har sannolikt redan sedan den ursprungliga kristallisationen varit pyroxenförande. LÄS MER

  4. 8. Baggalútar from Hvalfjörður (Iceland): Enigmatic spheroids of hydrothermally altered basaltic tephra

    Kandidat-uppsats, Uppsala universitet/Mineralogi, petrologi och tektonik

    Författare :Emmie Djuse; [2022]
    Nyckelord :Baggalútar; Iceland; basalt; Hvalfjörður; zeolites; volcanic spherulite; spheroids; Baggalútar; Island; basalt; Hvalfjörður; zeoliter; vulkaniska sfäruliter; sfäroider;

    Sammanfattning : Baggalútar are well-rounded spheroids that typically measures 16-18 mm in size and have a brownreddish appearance. They can be found in the Hvalfjörður bay in SW Iceland. LÄS MER

  5. 9. Den slagna Stenen & Härden : Mänskligt beteende kring Mesolitiska härdar i östra Mellansverige

    Kandidat-uppsats, Stockholms universitet/Institutionen för arkeologi och antikens kultur

    Författare :Anna Svensk; [2022]
    Nyckelord :stenålder; mesolitikum; mesolitiska; mellersta stenåldern; härdar; kvarts; kvartsverktyg; östra Mellansverige; teknologi;

    Sammanfattning : This paper will focus on the behavioral patterns around two hearths from two different settlements in Sweden during the late Mesolithic Stone Age, by studying stone tools and production waste around the hearths. ... LÄS MER

  7. 10. OSL dating of the Mesolithic site Nilsvikdalen 7, Bjorøy, Norway.

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Elin Jirdén; [2022]
    Nyckelord :OSL dating; luminescence; SAR protocol; water content; archaeology; Late Mesolithic; Norway.; Earth and Environmental Sciences;

    Sammanfattning : Luminescence dating is a well-established dating method within geological and archaeological research. However, the use of luminescence dating, and more specifically optically stimulated luminescence (OSL), is currently underutilised in Norwegian archaeology. LÄS MER