Essays about: "syreisotoper"

Showing result 1 - 5 of 6 essays containing the word syreisotoper.

  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. Implications of Magma and Bedrock Interaction, a Study of Xenopumice from La Palma, the Canary Islands

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Beatrice Jägerup; [2019]
    Keywords : La Palma; xenopumice; phreatomagmatism; whole rock geochemistry; oxygen isotopes; La Palma; felsiska xenoliter; explosiv vulkanism; geokemi; syreisotoper;

    Abstract : This thesis focuses on frothy, felsic xenoliths called ‘xenopumice’, that were retrieved from La Palma during a 10–day field campaign in December 2018. There are only few descriptions of these frothty xenoliths, and a consensus on their origin has not yet been achieved. READ MORE

  4. 3. The population structure of Late Pliocene and Early Pleistocene Neptunea angulata, Gastropoda and an investigation into bias in the fossil record and museum collections.

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Thomas Owen; [2016]
    Keywords : Bias; age distributions; taphonomy; population structure.; Partiskhet; åldersfördelning; tafonomi; populationsstrukturer.;

    Abstract : The fossil population structure of the gastropod Neptunea angulata from the late Pliocene and Early Pleistocene was investigated in this project in order to contribute to a wider study on the influence of predation on populations and the evolutionary history of organisms. Over time, predator-prey relationships can drive evolution in a way similar to the Red Queen Hypothesis. READ MORE

  5. 4. Temporal evolution of historic mafic lavas from Fogo, Cape Verde

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Erik Magnusson; [2016]
    Keywords : Cape Verde; Fogo; temporal evolution; igneous petrology; oxygen isotopes; Kap Verde; Fogo; tidsmässig utveckling; magmatisk petrologi; syreisotoper;

    Abstract : The volcanic Island of Fogo that is situated near the end of the southern island chain in the archipelago of Cape Verde is one of the most active oceanic volcanoes in the world. The purpose of this study was to investigate temporal variations in lavas from Fogo by using whole rock major and trace elements and describe trends in magmatic differentiation, melting systematics and mantle source compositions. READ MORE

  6. 5. Oxygen and iron isotope systematics of the Grängesberg Mining District (GMD), Central Sweden

    University essay from Berggrundsgeologi

    Author : Franz Weis; [2013]
    Keywords : Grängesberg; Apatite-iron oxide ore; oxygen isotopes; iron isotopes; Kiruna-type; Eisenisotope; Sauerstoffisotope; Eisenerz; Grängesberg; Kiruna-Typ; Apatit-järnmalm; syreisotoper; järnisotoper; Grängesberg; Kiruna-typ;

    Abstract : Iron is the most important metal for modern industry and Sweden is the number one iron producer in Europe. The main sources for iron ore in Sweden are the apatite-iron oxide deposits of the "Kiruna-type", named after the iconic Kiruna ore deposit in Northern Sweden. READ MORE