Essays about: "petrogenesis"

Found 4 essays containing the word petrogenesis.

  1. 1. Origin of Silicic Magmatism at the Katla Volcano, South Iceland

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Caroline Svanholm; [2021]
    Keywords : Katla volcano; Iceland; high-silica rocks; oxygen isotopes; AFC processes; Vulkanen Katla; Island; kiselrika bergarter; syreisotoper; AFC-processer;

    Abstract : Katla volcano, South Iceland, is a bimodal volcanic system hosting an unusual high number of silicic rocks within a basaltic rift setting. The petrogenesis of silica-rich rocks at Katla is controversial and two end-member hypotheses have been suggested. READ MORE

  3. 2. Laser Ablation in Magnetites; Unravelling the Signatures of Trace Element Patterns for Ore Petrogenesis : Trace element signatures of magnetite linked to metallogenesis of iron mineralizations of the Kiruna type

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Siôn Kinson; [2020]
    Keywords : EPMA; LA-ICPMS; petrogenesis; magnetite; orthomagmatic; igneous; hydrothermal; alteration; EPMA; LA-ICPMS; petrogenes; magnetit; ortomagmatisk; stollande; hydrotermisk; förändring;

    Abstract : Trace element analyses of magnetite samples from multiple ore deposits worldwide have recently been conducted, using both EPMA and LA-ICPMS, in order to try and understand the petrogenesis of Kiruna-type ore deposits. Here I employ literature data and new data from Kiruna and Grängesberg (Sweden) to help constrain and visualise evolutionary trends recorded by our samples and derive an overall model for the evolutionary processes that lead to Kiruna-type deposits. READ MORE

  4. 3. Petrogenesis of Carbonatites in the Alnö Complex, Central Sweden

    University essay from Institutionen för geovetenskaper

    Author : Sherissa Roopnarain; [2013]
    Keywords : Petrogenesis; Carbonatite; Alnö Complex; Stable Isotope; Rare Earth Element REE ; Kimberlite; Sustainable Development; Resource Mining; Rural Landscape; Natural Heritage.;

    Abstract : The Alnö Complex is a Late Precambrian alkaline and carbonatite intrusion (c. 30km2) into Early Proterozoic country rock that extends from the north east, to the north western shoulder of Alnö Island. READ MORE

  5. 4. Petrology of Birimian granitoids in southern Ghana : petrography and petrogenesis

    University essay from Lunds universitet/Geologiska institutionen

    Author : Mikael Grenholm; [2011]
    Keywords : Ghana; Birimian; granitoids; subduction; TTG; water-saturated melting; transcurrent deformation; Earth and Environmental Sciences;

    Abstract : Den Paleoproterozoiska Birimiska terrinen består av vulkaniska och sedimentära bergarter i grönstensbälten och metasedimentära bassänger som har blivit intruderade av två generationer granitoider. Den Birimiska terrinen utgör en stor del av den västafrikanska kratonen. READ MORE