Sökning: "Kanadas arktiska öar"

Hittade 3 uppsatser innehållade orden Kanadas arktiska öar.

1. 1. Cr-spinels in the Franklinian Mobile Belt : a geochemical record of Paleozoic tectonics

   Kandidat-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaper

   Författare :Malvina Forbes Halldén; [2019]
   Nyckelord :geology; geochemistry; spinel; Cr-spinel; chromite; SEM; scanning electron microscope; electron microprobe; EMP; electron probe microanalyzer; EPMA; electron micro probe analyzer; EMPA; petrogenetic indicator; microscopy; alteration; Franklinian Mobile Belt; Kulutingwak Formation; Clements Markham fold belt; Pearya; Paleozoic; suprasubduction zone; SSZ; island arc; IA; Arctic Canadian Archipelago; Ellesmere Island; Canada; 2017 Circum-Arctic Structural Events Expedition 19; Memorial University of Newfoundland; geologi; geokemi; spinell; Cr-spinell; kromit; SEM; svepeletronmikroskopi; elektronmikrosondanalys; EMP; EPMA; EMPA; petrogenetisk indikator; mikroskopi; Franklinian Mobile Belt; Kulutingwak-formationen; Clements Markham fold belt; Pearya; Paleozoikum; suprasubduktionszon; SSZ; öbåge; IA; Kanadas arktiska öar; Ellesmereön; Kanada; 2017 Circum-Arctic Structural Events Expedition 19; Memorial University of Newfoundland;

   Sammanfattning : The chemical compositions of Cr-spinel extracted from mafic and ultramafic rocks collected on Ellesmere Island in the Arctic Canadian Archipelago were obtained through electron microprobe analyses. The extensively altered rocks are sampled from rock units in the Franklinian MobileBelt, which is representative of a Paleozoic tectonically active oceanic regime of which little is presently known. LÄS MER

3. 2. Formation of Sulphides in the Canadian High Arctic Large Igneous Province; Testing the Influence of Sedimentary Rocks

   Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Erika Hagerfors; [2018]
   Nyckelord :LIPs; HALIP; SIMS; sulphur isotopes; Ni-Cu-PGE ores; environmental deterioration; LIPs; HALIP; SIMS; svavelisotoper; Ni-Cu-PGE malmer; klimatförändring;

   Sammanfattning : Large Igneous Provinces (LIPs) form during short-lived pulses of extensive magmatic activity. LIPs are known for their ability to affect global climate as well as for their Ni-Cu-PGE ore potential. LÄS MER

4. 3. Changes in Surface Mass Balance on the Devon Ice Cap in the Canadian Arctic

   Kandidat-uppsats, Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionen

   Författare :Linnéa Midefelt; [2016]
   Nyckelord :Surface mass balance; Devon Ice Cap; Canadian Arctic; Physics and Astronomy;

   Sammanfattning : Climate change is an ongoing process that contributes to changes in the climate on a global scale down to a local scale. The Arctic sea ice and the glaciers have continued to decrease at the same time as the rate of sea level rise has increased. LÄS MER