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Visar resultat 6 - 10 av 28 uppsatser som matchar ovanstående sökkriterier.

  1. 6. Magnetic Mineralogy of Nb-bearing Carbonatites from Oldoinyo Dili (Tanzania)

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Julia Frejd; [2021]
    Nyckelord :carbonatites; niobium; rare earth elements; Oldoinyo Dili; magnetic properties; karbonatiter; niob; rare earth elements; Oldoinyo Dili; magnetiska egenskaper;

    Sammanfattning : Niobium (Nb) and Rare Earth Elements (REE’s) have in recent years received considerable attention because of their importance to the modern technical industry, and more specifically the enhanced sustainability that comes with them. The main source for Nb and REE’s on Earth are carbonatites and associated alkaline silicate rocks. LÄS MER

  3. 7. En resa tillbaka i tiden för att förstå framtiden : En undersökning av organiskt material i eoliska lössjordssediment på västra Grönland, Kangerlussuaq.

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Caroline Morin; Jessica Sundman; [2021]
    Nyckelord :Greenland; organic carbon; loss of ignition; loess; paleoclimate; Grönland; organiskt material; loss of ignition; lössjordar; paleoklimat;

    Sammanfattning : Today's changing climate on Earth makes climate research more important than ever. By providing an understanding of the Earth's history and in particular places where large-scale climate change is taking place, for example Greenland, can one get an understanding about how the Earth will react in the future. LÄS MER

  4. 8. Rock-magnetic and Soil Organic Carbon Proxies of Climate Change from Loess – Aeolian Sediments of Brittany, France

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Carolina Kouns; Yael Margulis; [2021]
    Nyckelord :loess; LOI; magnetic susceptibility; Brittany; Quaternary; löss; LOI; magnetisk susceptibilitet; Bretagne; kvartär;

    Sammanfattning : The aeolian sediment loess, which consists of mineral dust, is one of the most detailed terrestrial record of both global and regional climate changes. As climate changes in the past cover a much wider range of climate variability than humans have directly recorded, the soil memory of loess is vital for understanding the Earth’s climate system. LÄS MER

  5. 9. Investigating the Magnetic Susceptibility of Cornish Loess as a Tool for Understanding the Palaeoclimate of SW England

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Love Tingdal; [2020]
    Nyckelord :loess; palaeoclimate; Lizard Peninsula; Isles of Scilly; palaeoprecipitation; magnetic susceptibility; loess; paleoklimat; Lizard-halvön; Scillyöarna; historisk årsmedelnederbörd; magnetisk susceptibilitet;

    Sammanfattning : Loess is a silty material produced via glacial grinding and its deposition is usually associated with colder periods when there is a considerable increase in atmospheric dust transport. The magnetic susceptibility of loess-palaeosol sequences has been the subject of extensive research within palaeoclimatology as it has proven to be reliable climate proxy. LÄS MER

  7. 10. Petrophysic of the Host-rock to the Ore in the Lovisa Mine, Bergslagen

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Oscar Gilljam Päärt; [2019]
    Nyckelord :Petrophysics; density; magnetic volume susceptibility; natural remanent magnetization; Bergslagen; lithology; Petrofysik; densitet; magnetisk susceptibilitet; naturlig magnetisk remanens; Bergslagen; lithologi;

    Sammanfattning : The Bergslagen region has three base-metal mines operating today, and one of them is the Lovisa mine, which host a Zn-Pb-Ag deposit. The Lovisa mine is located in the Guldsmedshyttan area north of Lindesberg. LÄS MER