Sökning: "petrographic type"

Visar resultat 6 - 10 av 11 uppsatser innehållade orden petrographic type.

  1. 6. Characterizing magnetic susceptibility and remanent magnetization of magnetite and hematite rich drill-core samples at Blötberget

    Master-uppsats, Uppsala universitet/Geofysik

    Författare :Andreas Bjork; [2018]
    Nyckelord :Verwey; Morin; Curie; Néel; magnetite; hematite; alteration; iron-ore; quality control; kappabridge; hysteresis; susceptibility; anisotropy; Verwey; Morin; Curie; Néel; magnetit; hematit; oxidation; järnmalm; kvalitetskontroll; kappabridge; hysteresis; susceptibilitet; anisotropi;

    Sammanfattning : Laboratory magnetic measurements are used to develop a methodology to characterize the Kiruna-type Rare Earth Elements (REE) bearing apatite iron-oxide deposits at Blötberget in central Sweden. This high-grade ore deposit is known to have sharp boundaries between lens shaped main ore bodies of magnetite-rich ore, and a complex hematite-rich ore associated with pegmatites and skarn formation. LÄS MER

  3. 7. Geophysical characterization and petrographic analysis of cap and reservoir rocks within the Lund Sandstone in Kyrkheddinge

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Mikael Jakobsson; [2014]
    Nyckelord :wire-line logging; Lund Sandstone; natural gas storage; Scania; Reservoir rock; reservoarbergart; borrhålsloggning; Lundasandstenen; naturgaslager; Skåne; Earth and Environmental Sciences;

    Sammanfattning : Geophysical investigations in the Kyrkheddinge area including seismic surveys and wire-line logging were carried out by Swedegas AB between 1978-1985. This study has used the data to make a geophysical and petrographic characterization of cap-rock and reservoir sections within the Lund Sandstone in Kyrkheddinge to evaluate the conditions for storing gas in the bedrock. LÄS MER

  4. 8. Classification of stony meteorites from north-west Africa and the Dhofar desert region in Oman

    Magister-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Erika Ohlsson; [2007]
    Nyckelord :chondrites; Dhofar NWA; chondrules; petrographic type; shock stage; weathering grade; kondriter; kondruler; petrografisk typ; chocknivå; vittringsgrad; Earth and Environmental Sciences;

    Sammanfattning : Populärvetenskaplig sammanfatttning: Meteoriter är fragment av asteroider ibland även av planeter i vårt solsystem. Det finns tre huvudklasser av meteoriter, järn-, stenjärn– och stenmeteoriter. Stenmeteoriterna är indelade i två underklasser, primitiva akondriter och kondriter . LÄS MER

  5. 9. An investigation of the Felsic Ramiane Pluton in the Monapo Structure, northern Moçambique

    Magister-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Jonnina P. Karlsson; [2006]
    Nyckelord :Moçambique Orogenic Belt; Nampula Subprovince; Monapo Structure; Ramiane Pluton; Moçambique bältet; Nampula provinsen; Monapostrukturen; Ramianeplutonen; Earth and Environmental Sciences;

    Sammanfattning : Monapostrukturen ligger i Nampula provinsen i norra Moçambique, och utgör en del av Mocambique bältet. Strukturen är ca 35-40 km i diameter och har en mycket låg topografi. Trots detta syns den väl på satellitbilder och flygfotografier. LÄS MER

  7. 10. A petrographic and geochemical study of the Early Proterozoic, Bangenhuk granitoid rocks of Ny Friesland, Svalbard

    Magister-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Patric Carlsson; [1993]
    Nyckelord :geography; geochemistry; petrography; geology; Early Proterozoic; Bangenhuk granitoid rocks; Ny Friesland; Svalbard; Earth and Environmental Sciences;

    Sammanfattning : Old Red Sandstones and younger strata overlie a variety of deformed and metamorphosed Early Paleozoic and Precambrian rocks on Svalbard, referred to as the Hecla Hoek Complex. At least three different terranes are recognized, occurring in eastern, northwestern and southwestern areas. LÄS MER