Helena Alexanderson
Professor
Testing the Applicability of Quartz and Feldspar for Luminescence Dating of Pleistocene Alluvial Sediments in the Tatra Mountain Foothills, Slovakia
Författare
Summary, in English
Luminescence dating is a widely used method in combination with sedimentological analysis for reconstructing the landscape development of the Quaternary period. In this study, quartz and K-feldspar measurements were used to evaluate the luminescence characteristics with the aim of dating the deposits. The sediments were sampled from an abandoned gravel pit in the Biely Váh valley and eight sites in the lower part of the Velická dolina valley, High Tatra Mountains, Slovakia. Optically stimulated luminescence (OSL) showed that quartz had an unstable weak signal, and standard single aliquot regeneration (SAR) dose estimates were unreliable, as were doses from pulsed OSL and differential OSL. Infrared (IR50) and post-IR IR225 stimulation (pIRIR225) signals from K-feldspar grains, on the other hand, gave stronger signals but were, to various extents, influenced by incomplete bleaching, fading and uncertainty due to high (>2D0) doses. We find the uncorrected pIRIR225 ages most reliable, though modern analogues indicate that there may be significant residual from incomplete bleaching for some of the samples. The results of the luminescence analyses, ages and sedimentology are put in the context of landscape dynamics and compared to the known glacial history of the Tatra Mountains.
Avdelning/ar
- Kvartärgeologi
Publiceringsår
2023-01-01
Språk
Engelska
Sidor
50-80
Publikation/Tidskrift/Serie
Geochronometria
Volym
50
Issue
1
Dokumenttyp
Artikel i tidskrift
Förlag
WIND-J WOJEWODA PUBLISHING CO.
Ämne
- Geology
Nyckelord
- glaciofluvial deposits
- High Tatra Mountains
- IRSL dating
- modern analogues
- sedimentological analysis
Status
Published
Projekt
- Quartz luminescence properties
ISBN/ISSN/Övrigt
- ISSN: 1733-8387