Temat: OSL age - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Korelacja dat TL i OSL próbek z czterech profili lessowych Polski SE i SW
Correlation of TL and OSL dates for four loess profile samples from SE and SW Poland
Autorzy:: Fedorowicz, S.
Powiązania:: https://bibliotekanauki.pl/articles/2074375.pdf
Data publikacji:: 2005
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: less
datowanie TL
datowanie OSL
data luminescencyjna
Pogórze Karpat
TL age
OSL age
loess
Carpathian Foothills
Sudeten Foreland
Opis:: Nineteen samples were collected from four loess profiles: Dybawka, Tarnawce, Dankowice and Biały Kościół for purposes of TL and OSL dating. The samples were collected from loess, interstadial fossil soil, Eemian soil and Holocene soil. The results were presented in the form of TL=f (OSL) date chart. The majority of TL dates are older than OSL dates. The results of LMg luminescence dating run parallel to the straight line of equal ages. The chart shows a high similarity of TL and OSL dates. The results are consistent with the stratigraphic diagnosis. Loess grains frequently show an age heterogeneity (two or more OSL dates are provided for a single sample).
Źródło:: Przegląd Geologiczny; 2005, 53, 11; 1047-1050
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Tytuł:: The relation between optical bleaching and sedimentological features of fluvial deposits in the Toruń Basin (Poland)
Autorzy:: Weckwerth, P.
Przegiętka, K.
Chruścińska, A.
Pisarska-Jamroży, M.
Powiązania:: https://bibliotekanauki.pl/articles/2060018.pdf
Data publikacji:: 2013
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: OSL age in version
quartz
optical bleaching
sand-bed braided river
ice-marginal streamway valley
Opis:: Distributions of equivalent doses (DE) obtained by the Single Aliquot Regenerative-dose (SAR) OSL method applied for large aliquots of coarse quartz grains extracted from fluvial sediments are presented and analysed with respect to a fluvial palaeoenvironment. The Nowe Dąbie and Łochowo fluvial succession from the western part of Toruń Basin (eastern part of Noteć–Warta streamway, Toruń-Eberswalde ice-marginal valley) was analysed. The fluvial depositional conditions controlling the extent of daylight bleaching are reconstructed by sedimentological studies. The relation between the amount of bleaching and sedimentological properties of fluvial deposits indicate that ripple cross-laminated sands that accumulated on the floodplain and horizontally-bedded sands deposited in shallow channels are more appropriate for OSL dating than sands derived from the deep channel. Along with luminescence results obtained for the river deposits, data measured from an ancient pottery sample, ensuring complete reset of the OSL signal, are presented, compared to and discussed. On this base the poorly bleached sediment samples are identified and an adjustment factor is introduced for correcting their OSL dating results in order to avoid age inversion. The application of the adjustment factor is found to minimize overestimation of OSL ages of sediments.
Źródło:: Geological Quarterly; 2013, 57, 1; 31--44
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Rate of loess accumulation in Europe in the Late Weichselian (Late Vistulian)
Autorzy:: Fedorowicz, S.
Łanczont, M.
Powiązania:: https://bibliotekanauki.pl/articles/2059500.pdf
Data publikacji:: 2007
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: European loess
Upper Weichselian
mass accumulation rates (MAR)
TL age
optically stimulated luminescence (OSL)
Opis:: The European loess profiles provides evidence of changes in climate in the last glacial cycle. The final stage of loess accumulation took place in the youngest part of the last glacial (28 to 12 ka BP). Loess accumulated in two periods: from 28 to 18 ka BP and from 18 to 13 ka BP. These two stages were separated by a short phase of weaker aeolian activity and weak pedogenesis (initial tundra gleyed soils). The loess sedimentation rate can be defined as a mass accumulation rate (MAR ex pressed in g/m2/year). This value was calculated by Frechen et al. (2003) for several dozen loess sites across western and central Europe. In this paper we calculate the MAR for several loess sites in Poland and Ukraine. The MAR distribution across Poland and Ukraine is uneven in these two intervals. The MAR values oscillate between 100 to several thou sand g/m2/year. They markedly in crease eastwards, which may be explained by the latitudinal gradient of periglacial climate in the LateWeichselian (= Late Vistulian). The MAR distribution along a N-S trend confirms its large range in western and central Europe. However, the most easterly profiles (Polish and Ukrainian ones) show less variable thick nesses as the MAR was stable at a relatively low level from several hundred to more than a thou sand g/m2/year. This stability of the MAR characterized both loess-forming intervals in this part of Europe.
Źródło:: Geological Quarterly; 2007, 51, 2; 193-202
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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