Sökning: "Quartzite"

Visar resultat 1 - 5 av 17 uppsatser innehållade ordet Quartzite.

  1. 1. Gropar och vallar i klapper : En undersökning av lämningar i Västerbottens klapperfält

    Kandidat-uppsats, Umeå universitet/Institutionen för idé- och samhällsstudier

    Författare :Johan Hedström; [2023]
    Nyckelord :boplatsgrop i klapper; boplatsvall i klapper; tomtning; kvarts; kvartsit; Västerbotten; norra Sverige;

    Sammanfattning : Pits and mounds in pebble: A study of archaeological remains in ancient pebble beaches inthe county of Västerbotten. Pits (Sw. boplatsgropar) and mounds (Sw. boplatsvallar) in ancient pebble beaches are two types of archaeological remains that are common under the highest coastline in the county of Västerbotten, Sweden. LÄS MER

  3. 2. The Origins and Ecology of Early Paleozoic Spreiten Ichnofossils: Comparisons of Daedalus and Syringomorpha with Alectorurus

    Magister-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Zane Goodell; [2023]
    Nyckelord :trace fossils; ichnology; Cambrian; Daedalus desglandi; Alectorurus circinatus; Syringomorpha nilssoni; the agronomic revolution;

    Sammanfattning : The Cambrian explosion not only shaped the ecosystems of the Phanerozoic, but fundamentally changed how biota interacts with the environment, including the substrate. Cambrian trace fossils Alectorurus and Syringomorpha as well as Ordovician-Silurian Daedalus represent novel modes of faunal interaction with the newly innovated shallow marine mixed-ground and have surprisingly limited stratigraphic ranges. LÄS MER

  4. 3. Character and Evolution of Ore Mineralisation in the Te-Rich Enåsen Au-Cu Deposit, Central Sweden

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Simon Pieslinger; [2023]
    Nyckelord :ore geology; partial melting; quenching textures; symplectite; tellurides; critical metals;

    Sammanfattning : The Enåsen gold deposit is located in Gävleborg county in central Sweden. Mining operations at Enåsen took place from 1984 to 1991 with Au as the main target for exploitation. The deposit has been interpreted as a metamorphosed Palaeoproterozoic analogue to near-recent epithermal Au mineralisations of a high sulphidation type. LÄS MER

  5. 4. Rock Magnetic Studies of Magnetite and Quartzite: Results at Ambient Conditions and From Diamond Anvil Pressure Experiments (~2 GPa)

    Master-uppsats, Uppsala universitet/Geofysik

    Författare :Dimitra Daniil; [2021]
    Nyckelord :magnetic susceptibility; remanent magnetization; mDAC; AF demagnetization; NRM; IRM; ARM; magnetisk susceptibilitet; magnetisk remanens; mDAC; AF demagnetisering; NRM; IRM; ARM;

    Sammanfattning : Numerous techniques are used to study the magnetic history and properties of rocks, which provides important data on the Earth’s interior. In this study we conducted a series of experiments on two different sample sets, comprising pure magnetite (Set1) and a mixture of magnetite-hemoilmenite-bearing quartzite (Set2), in order to gather information about their magnetic susceptibility and remanent magnetization. LÄS MER

  7. 5. I stensmedernas landskap : En rumslig analys av de bifaciala pilspetsarna från Dalarna

    Master-uppsats, Uppsala universitet/Institutionen för arkeologi och antik historia

    Författare :Tova Lindblad; [2021]
    Nyckelord :Bifacial arrowheads; Dalarna; Early Metal Age; Spatial analysis; Landscape; Taskscape; Mobility; Bifaciala pilspetsar; Dalarna; äldre metalltid; rumslig analys; landskap; taskscape; mobilitet;

    Sammanfattning : A spatial analysis of the bifacial arrowheads from the Swedish county of Dalarna, located in the inland area of middle Sweden, is presented in this thesis. The study aims to understand how the arrowheads relate to land use and mobility in the landscape. Produced to be mobile and portable, arrows are of sorts synonymous with movement and mobility. LÄS MER