Sökning: "vulkanisk breccia"

Hittade 3 uppsatser innehållade orden vulkanisk breccia.

1. 1. Petrography and Mineral Chemistry of the Sälskär Breccia (Alnö Alkaline Complex, Central Sweden)

   Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Vincent Gustafsson; [2022]
   Nyckelord :Alnö alkaline complex; diatreme; melilitite; pelletal lapilli; volcanic breccia; Alnö alkalina område; diatrem; melilitit; pelletal lapilli; vulkanisk breccia;

   Sammanfattning : Primitive magmas can provide important details about the mantle from which they are derived. In this thesis, petrographic observations and new mineral chemistry analyses of the Sälskär breccia from the Alnö alkaline complex, central Sweden, are reported. LÄS MER

3. 2. 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

4. 3. Hur bildades Bushveldkomplexet?

   Kandidat-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Filip Ivarsson; [2015]
   Nyckelord :chromite; intrusion; platinum; LIP; Bushveld Complex; Earth and Environmental Sciences;

   Sammanfattning : The Bushveld complex is the world’s largest mafic intrusion and located on the Archean Kaapvaal craton, southern Africa. The complex’s host rock has anomalous quantities of platinum-group elements (PGE), chromite and other valuable metals of high demand. LÄS MER