Sökning: "IRSL dating."

Visar resultat 1 - 5 av 7 uppsatser innehållade orden IRSL dating..

1. 1. Post-IR IRSL dating of K-feldspar from Loess at Lowland Point, SW England : Developing a Chronology for Past Climate Records

   Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Elin Törnqvist; [2022]
   Nyckelord :loess; post-IR IRSL; Lowland Point; SW England; Quaternary; löss; post-IR IRSL; Lowland Point; England; kvartär;

   Sammanfattning : Loess deposits are terrestrial clastic sediments derived from aeolian deposition. Loess is transported in periglacial conditions and was mainly deposited in cold environments around glaciers during the Quaternary period. LÄS MER

3. 2. Determination of depositional environment and luminescence dating of Pleistocene deposits in the Biely Váh valley, southern foothills of the Tatra Mountains, Slovakia

   Master-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Ingrid Bejarano Arias; [2020]
   Nyckelord :Luminescence dating; glacifluvial deposits; sedimentological analysis; High Tatra Mountains; IRSL dating.; Earth and Environmental Sciences;

   Sammanfattning : The Tatra Mountains have had several glaciations during the Quaternary. The deposits located in the southern foothills were classified as glacifluvial, based on geomorphology, but its sediments have not been studied in detail. LÄS MER

4. 3. Combining luminescence dating and sedimentary analysis to derive the landscape dynamics of the Velická Valley in the High Tatra Mountains, Slovakia

   Master-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Roos van Wees; [2020]
   Nyckelord :IRSL; Chronology; Sedimentology; Landscape development; Middle Pleistocene; Modern Analogues; Clast shape analysis; Maximum particle size; High Tatras; Slovakia; Earth and Environmental Sciences;

   Sammanfattning : Luminescence dating is widely used in combination with sedimentological analysis to reconstruct the landscape development of the Quaternary period. Here, quartz and K-feldspar measurements are used to date and evaluate the luminescence characteristics of sediments from seven sites of the lower part of the Velická valley (995-1250 m a.s.l. LÄS MER

5. 4. Arctic Loess as an Environmental Archive: Holocene Dust and Wildfire Record in West Greenland

   Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Lars Petter Hällberg; [2018]
   Nyckelord :aeolian dust; IRSL; luminescence dating; charcoal analysis; magnetic susceptibility; wildfire;

   Sammanfattning : The largest wildfire ever observed in Greenland raged through its tundra during august 2017, and it is unknown if there have been similar wildfires in the area before satellite monitoring began in 1999. Arctic wildfires affect permafrost degradation, carbon storage of soils and the surface albedo of the Greenland Ice sheet – despite this, local fires have previously been ignored by researchers. LÄS MER

7. 5. Using Bulk XRF-Analysis of Chinese Loess to Determine High-Resolution Records of Dust Provenance

   Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Alexandra Engström Johansson; [2017]
   Nyckelord :dust; provenance; elemental ratios; Chinese Loess Plateau;

   Sammanfattning : Understanding the sources of the dust that forms the extensive loess deposits on the Chinese Loess Plateau is crucial for reconstructing atmospheric circulation patterns and dust pathways. Dust sources are however highly debated, mainly due to the low resolution of many records and the often ambiguous nature of geochemical proxies. LÄS MER