Sökning: "Grønnedal-Íka"

Hittade 1 uppsats innehållade ordet Grønnedal-Íka.

  1. 1. Study of opaque phases in carbonatites of the Grønnedal-Íka alkaline complex, Southwest Greenland

    Kandidat-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaper

    Författare :Eemu Ranta; [2015]
    Nyckelord :carbonatite; opaque phases; oxides; magnetite; hydrothermal fluids; Grønnedal-Íka; Greenland;

    Sammanfattning : Opaque phases from carbonatites of the Grønnedal-Íka alkaline complex (1299±17 Ma) of Southwest Greenland were analyzed in terms of their mineralogy and microstructure. The analysis demonstrates that a later intrusion by a 55 m wide dolerite dyke of unknown age has prompted the mineralization of magnetite by activating hydrothermal fluid convection. LÄS MER