Sökning: "Joaen Stamsnijder"

Hittade 2 uppsatser innehållade orden Joaen Stamsnijder.

1. 1. New geochronological constraints on the Klipriviersberg Group: defining a new Neoarchean large igneous province on the Kaapvaal Craton, South Africa

   Master-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Joaen Stamsnijder; [2017]
   Nyckelord :LA-ICP-MS; U–Pb geochronology; ID-TIMS; baddeleyite; Klipriviersberg Group; LIP; South Africa; Earth and Environmental Sciences;

   Sammanfattning : In recent years, there has been a significant improvement in our ability to determine the ages of extensive short-lived magmatic events (large igneous provinces) dominated by rocks of mafic (silica-poor) compositions. This has been aided by targeting the magmatic feeders to these large igneous provinces (e.g. LÄS MER

3. 2. Bestämning av kvartshalt i sandprov : metodutveckling med OSL-, SEM- och EDS- analys

   Kandidat-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Joaen Stamsnijder; [2014]
   Nyckelord :method development.; potassium feldspar; plagioclase; quartz content; optically stimulated luminescence OSL ; metodutveckling; kalifältspat; plagioklas; kvartshalt; energidispersiv röntgenanalys EDS ; backscatter; optiskt stimulerad luminiscens OSL ; Earth and Environmental Sciences;

   Sammanfattning : Quartz is one of the most common minerals on Earth and is found in both lose sediment, sedimentary rock and bedrock. The maturity grade of sediments can be determined by the amount of quartz it contains. This is used when interpreting the sediments’ geological history and reconstructing paleoenvironments. LÄS MER