Sökning: "klinopyroxen"

Visar resultat 1 - 5 av 19 uppsatser innehållade ordet klinopyroxen.

  1. 1. Lejarfjället Garnet(?) Peridotite – Origin and Petrological Characterization of Symplectitic Aggregates in Ultramafic Rocks

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

    Författare :Felicia Eriksson; [2022]
    Nyckelord :ultramafic; high-pressure metamorphism; peridotite; garnet breakdown; Scandinavian Caledonides; ultramafisk; högtrycks metamorfos; peridotit; granat; skandinaviska kaledoniderna;

    Sammanfattning : Ultramafic rocks are abundant in the Earth’s mantle but rare on the surface. Since no in-situ samples from the mantle can be collected, mantle rocks provide knowledge of mechanisms operating in the mantle and large-scale processes that brought them up to the surface. LÄS MER

  3. 2. Petrografisk beskrivning av Prekambriska ortognejser i den undre delen av Särvskollan, mellersta skollenheten, Kaledonska orognen

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Daniel Olla; [2020]
    Nyckelord :Svandinaviska Kaledoniderna; Särvskollan; Valmåskomplexet; Jämtland; Earth and Environmental Sciences;

    Sammanfattning : Den Kaledonska bergskedjan i Skandinavien bildades under tidsperioderna Ordovicium och Silur och är uppbyggd av ett avancerat skollkomplex. En av skollorna heter Särvskollan. Den består i huvudsak av Prekambrisk lågmetamorf sandsten, vilken genomskärs av en Prekambrisk diabassvärm som på vissa platser inte visar någon metamorfos. LÄS MER

  4. 3. Studying magmatic systems through chemical analyses on clinopyroxene - a look into the history of the Teno ankaramites, Tenerife

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Vendela Haag; [2020]
    Nyckelord :clinopyroxene; sector zoning; concentric zoning; mass wasting; magma recharge; Earth and Environmental Sciences;

    Sammanfattning : Clinopyroxenes have the ability to crystallize over and respond to a large range of temperatures, pressures and chemical compositions, and thus, they are ideal for studies regarding the history of magmatic systems. In this thesis, the chemistry and zoning of four clinopyroxene crystals from an ankaramite sample from the Teno massif, Tenerife, were analysed. LÄS MER

  5. 4. Magmatic water content and its effect on volcano explosivity; an FTIR investigation on the 2006 and 2010 eruption products of Merapi volcano, Indonesia

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Nadhirah Seraphine; [2018]
    Nyckelord :Merapi volcano; NAMs; clinopyroxene; magmatic water content; FTIR spectroscopy;

    Sammanfattning : One of the most important volatiles in magma is water. In magma, water is incorporated in both the melt and in crystals, including hydrous and nominally anhydrous minerals (NAMs). LÄS MER

  7. 5. A Petrological Investigation of the Host Rocks for the Kuj-Kiirunavaara Ore

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Holger Sandberg; [2018]
    Nyckelord :Kiirunavaara; optical mineralogy; hydrothermal alteration; electron microprobe; Kiirunavaara; optisk mineralogi; hydrotermal omvandling; elektron-mikrosond;

    Sammanfattning : The Kiirunavaara mine hosts one of the world’s largest apatite-iron ore mineralisations. This ore body has been subject to large amounts of research as well as extensive mining. The ore body is situated between the syenitic foot wall and the rhyodacitic hanging wall, of which consists of differing mineralogy and characteristics. LÄS MER