Sökning: "Laisvall"

Hittade 2 uppsatser innehållade ordet Laisvall.

1. 1. Rb-Sr sphalerite data and implications for the source and timing of Pb-Zn deposits at the Caledonian margin in Sweden

   Master-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Alfred Larsson; [2018]
   Nyckelord :Laisvall; Granberget; geochronology; sphalerite; ore; Rb-Sr; Earth and Environmental Sciences;

   Sammanfattning : The eastern Caledonian erosional front hosts the world-class Pb-Zn deposit at Laisvall (64 Mt mined) and Granberget mineralization, northern Sweden, along with several other smaller, related types of deposits consisting of impregnation mineralization of galena and sphalerite in clastic host rocks. Previous work have discussed the nature of the ore-forming processes and constraints for the timing of the mineralization, however, the mechanisms are still not fully understood and previous age determinations are ambiguous. LÄS MER

3. 2. Glacialgeologi i fjällranden : Undersökning för att spåra värdberget till ett zinkmineraliserat block

   Kandidat-uppsats, Institutionen för ekologi, miljö och geovetenskap

   Författare :Lotta Olausson; [2012]
   Nyckelord :Västerbotten; paleoiceflow; glaciogeological survey; boulder transport; quaternary geology;

   Sammanfattning : The valleys southwest of Storuman has been exploration targets for sulfide mineralizations like the Laisvall Pb-Zn deposit since the late 1900 when several mineralized boulders where found. No previous glaciogeological survey has been made. LÄS MER