Temat: OSL - 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:: Erosion and accumulation phases during the last glacial-interglacial cycle : a case study of the terrace system of the Odra and Osobłoga rivers (southern Poland)
Autorzy:: Wójcicki, Krzysztof Jan
Pawelec, Halina
Malik, Ireneusz
Woskowicz-Ślęzak, Beata
Moska, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/2058537.pdf
Data publikacji:: 2020
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: fluvial processes
river terraces
Late Quaternary
OSL
southern Poland
Opis:: In the Odra and Osobłoga River valleys in the vicinity of the town of Krapkowice, a system of morphological levels is present which is exceptionally extensive compared to other such systems in southern Poland. The extent, origins and chronology of these levels have been the subject of many controversies. In the light of current research, the terraces, which are situated on average 14.5-13, 12-10, 8-6, 6-4 and 3-1 metres above the river level, were formed in the post-Wartanian interval. The main factor driving their development was erosion, which compensated for the effects of large-scale aggradation that had occurred during the anaglacial phase of the Odranian Glaciation (MIS 8) dated to 261 ±15 ka. The impact of climatic conditions on the trends towards fluvial erosion or accumulation was only of secondary importance. According to OSL dating, successive phases of vertical stabilisation of the valley floor occurred ~118.8 ±8.3, 87.7 ±5.7 and 42.0 ±2.0 ka. In the meantime, erosion intensified, which resulted in the formation of lower terrace levels. During the climatic minimum of the Upper Plenivistulian (21.5 ±1.5 ka), under conditions of the delivery of sheet-wash-generated sediment, the aggradation of distal reaches of the Odra River valley was locally marked. During the Late Vistulian and Holocene, erosive tendencies continued, which were reflected by the fact that the surfaces of subsequent inset alluvial fills were situated ever lower. In the light of dating results, it can be concluded that during the colder periods correlated with the Rederstall Stadial (MIS 5b) and with the Hasselo Stadial (MIS 3), a braided river was present in the river valleys examined, which was most probably accompanied by permafrost. During the Eemian Interglacial (MIS 5e), during the Late Vistulian Interstadials and in the Holocene, it was a meandering river.
Źródło:: Geological Quarterly; 2020, 64, 1; 104--119
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Litologia, geneza i wiek osadów w Kalnikowie i Chotyńcu na Płaskowyżu Tarnogrodzkim (Kotlina Sandomierska)
Lithology, origin and age of sediments in the Kalników and Chotyniec in the Tarnogród Plateau (Sandomierz Basin)
Autorzy:: Gębica, Piotr
Superson, Sławomir
Trybała-Zawiślak,, Katarzyna
Woronko, Barbara
Powiązania:: https://bibliotekanauki.pl/articles/578453.pdf
Data publikacji:: 2017
Wydawca:: Łódzkie Towarzystwo Naukowe
Tematy:: uziarnienie osadów
obróbka ziarn kwarcu
datowanie OSL
stanowiska archeologiczne
Płaskowyż Tarnogrodzki
grain size
quartz grain roundness
OSL dating
archaeological sites
Tarnogród Plateau
Opis:: Artykuł omawia wyniki analiz uziarnienia, obróbki ziarn kwarcu i datowań metodą OSL zróżnicowanych pod względem pochodzenia i wieku osadów czwartorzędowych (osady eoliczne, rzeczne, fluwioglacjalne) występujących na stanowiskach archeologicznych w południowej części Płaskowyżu Tarnogrodzkiego. Osady wydmowe w Kalnikowie-Zagrebli miąższości 1,2 m charakteryzują się dominacją ziarn drobnoziarnistych o średniej średnicy Mz=2,9 phi. Tak drobnoziarniste osady są rzadko spotykane w wydmach z późnego glacjału w Kotlinie Sandomierskiej. Depozycja piasków wydmowych na podstawie datowań OSL miała miejsce w młodszym dryasie. Osady budujące podłoże wydmy, to piaski drobnoziarniste z poziomami bruków żwirowych pochodzenia fluwioglacjalnego, które jak wykazała obróbka ziarn kwarcu, znajdują się na wtórnym złożu. Terasę nadzalewową Wiszni o wysokości 6–8 m n.p.rz. budują warstwowane horyzontalnie drobnoziarniste utwory piaszczyste, które na powierzchni terasy tworzą wał przykorytowy. Cechy strukturalne osadów oraz rozkład parametrów uziarnienia wskazują, że akumulowane były w strefie przykorytowej równi zalewowej. Analiza osadów pylastopiaszczystych pokrywających wierzchowinę płaskowyżu w otoczeniu wału grodziska z okresu celtyckiego w Chotyńcu wykazała, że nie są to utwory pochodzenia wietrzeniowego, ale prawdopodobnie osady genezy eolicznej.
The article presents the results of grain size, quartz grain roundness analysis and OSL datings, differing in origin and age of the Quaternary deposits (aeolian, fluvial, fluvioglacial) occurring in the archaeological sites in the southern part of the Tarnogród Plateau. The dune sediments in the Kalników-Zagrebla site of a thickness of 1.2 m are characterized by the domination of fine grains with the mean diameter Mz=2.9 phi. Such fine sediments are unusual in the Late Glacial dunes in the Sandomierz Basin. The deposition of the dune was dated by the OSL to the Younger Dryas. The dunes are underlain by fine sands with thin gravel horizons of fluvioglacial origin, which represent the redeposited sediments according to quartz grain roundness analysis. The terrace of the Wisznia River 6–8 m above the river channel is built of horizontally bedded fine sands, which form the natural levees on the terrace surface. Structural features and the distribution of grain size parametres indicate, that sands were accumulated in the proximal part of the floodplain. An analysis of the silty-sandy sediments covering the plateau around the hill-fort rampart from the Celtic Period in Chotyniec site, excluded their weathering origin and proved their aeolian genesis.
Źródło:: Acta Geographica Lodziensia; 2017, 106; 65-86
0065-1249
Pojawia się w:: Acta Geographica Lodziensia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Coastal dune dynamics along the northern Curonian Spit, Lithuania : toward an integrated database
Autorzy:: Bitinas, A.
Dobrotin, N.
Buynevich, I. V.
Molodkov, A.
Damušytė, A.
Pupienis, D.
Powiązania:: https://bibliotekanauki.pl/articles/2060456.pdf
Data publikacji:: 2018
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: palaeosols
ground-penetrating radar
GPR
IR-OSL
radiocarbon
magnetic susceptibility
Opis:: Sand dunes are the most prominent subjects of geological and geomorphological interest along the Curonian Spit - a mega-barrier that separates the Curonian Lagoon from the Baltic Sea. To date, an assessment of various parameters of migrating dunes along the spit has been based on comparative analysis of old maps or aerial and satellite images, as well as geodetic measurements. These investigations have allowed assessment of dune dynamics over a relatively short historical period (~1700s to present). The most recent detailed investigations of the Dead (Grey) Dunes along the Lithuanian part of the spit using ground-penetrating radar (GPR) and magnetic susceptibility (MS) surveys, supported by a radiocarbon (14C) chronological framework of palaeosols and infrared optically stimulated luminescence (IR-OSL) ages of sand horizons, have advanced our understanding of aeolian landscape evolution. The interpretation of dune activity and stability phases has been generally based on IR-OSL dating results of the sand layers located between radiocarbon-dated palaeosols. However, the influence of soil-forming processes on the IR-OSL dating results related to possible migration of natural radioactive isotopes via aeolian sand layers has not been previously considered. Hypotheses of dune reactivation and migration caused by abrupt regional climate shifts, catastrophic forest fires, anthropogenic influence, and more local forcings have been tested. An integrated approach to dune investigations has offered an estimate of the rates of sand accumulation and key phases of aeolian dynamics during both stormy and calm periods, as well as helped to extend the record of dune evolution to the mid-Holocene. The palaeoenvironmental and palaeodynamic reconstructions of the Dead Dunes suggest that this mid-Holocene phase of dune activity was of a local character and likely did not exceed several centuries.
Źródło:: Geological Quarterly; 2018, 62, 3; 553--562
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Chronology of the last ice sheet decay on the southern Baltic area based on dating of glaciofluvial and ice-dammed lake deposits
Autorzy:: Uścinowicz, Szymon
Adamiec, Grzegorz
Bluszcz, Andrzej
Jegliński, Wojciech
Jurys, Leszek
Miotk-Szpiganowicz, Grażyna
Moska, Piotr
Pączek, Urszula
Piotrowska, Natalia
Poręba, Grzegorz
Przezdziecki, Piotr
Uścinowicz, Grzegorz
Powiązania:: https://bibliotekanauki.pl/articles/2058614.pdf
Data publikacji:: 2019
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: southern Baltic area
deglaciation
Late Glacial
Słupsk Bank Phase
OSL dating
Opis:: The paper presents the results of the first OSL dating of glaciofluvial and ice-marginal lake sediments which occur between end moraines of the Słupsk Bank and the Polish coast. The sand and gravel of glaciofluvial deltas on the Słupsk Bank were deposited most likely during a period from 14.3 ±1.2 to 16.6 ±1.4 ka ago. The deposition of silty-sandy sediments of the ice-marginal lake is dated at 14.51 ±0.81 and 14.6 ±1.4 ka years. Likewise, dates ranging from 13.74 ±0.84 to 16.70 ±1.1 ka obtained from low sandy ridges, related to the southern range of the ice-marginal lake in the Gardno-Łeba Lowland, indicate the most likely timing of their deposition. It can be concluded that a short stop of the ice sheet on the Słupsk Bank took place approximately 15.2 ka ago, which could be correlated with the position of the ice sheet front in central Skåne and in northern Lithuania at that time. Older and younger results were also obtained, except the dates mentioned above. The older ages show little sunlight exposure of sediments during their deposition. The younger dates indicate a marine origin of the sediments and show that some parts of glaciofluvial sediments were redeposited and exposed to sunlight at a later stage, most probably when dead-ice blocks were melting.
Źródło:: Geological Quarterly; 2019, 63, 1; 193--208
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Investigating the filling state of OSL detector traps with the optical sampling method
Autorzy:: Mandowska, Ewa
Smyka, Robert
Mandowski, Arkadiusz
Powiązania:: https://bibliotekanauki.pl/articles/2106412.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: optically stimulated luminescence
OSL
ionizing radiation detectors
radiative recombination
signal loss
Opis:: Optically stimulated luminescence (OSL) and thermoluminescence (TL) methods are commonly used in dosimetry of ionizing radiation and dating of archaeological and geological objects. A typical disadvantage of OSL detectors is signal loss over a longer time scale. In this article, we present a method of studying this phenomenon as well as monitoring the state of the detector by means of optical sampling. The method was used to determine the OSL signal loss (fading) characteristics of selected potassium feldspars.
Źródło:: Metrology and Measurement Systems; 2022, 29, 2; 361--371
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Fluvial response to environmental changes during MIS 4-3: a sedimentary record at the Brześnica site, central-western Poland
Autorzy:: Moskalewicz, Damian
Tylmann, Karol
Woźniak, Piotr Paweł
Kopyść, Natalia
Moska, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/2060131.pdf
Data publikacji:: 2020
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: braided river
fluvial deposits
OSL dating
MIS 4
MIS 3
Last Glacial Maximum
Opis:: Fluvial deposits subjected to this study are exposed at the Brześnica site, in the south-western part of the Wielkopolska region in Poland, which was close to the ice-sheet limit during the Last Glacial Maximum (LGM). Sedimentological analyses, including lithofacies descriptions, palaeocurrent measurements, grain size and rounding analyses and heavy mineral compositions indicate that the fluvial deposits at Brześnica were deposited in braided river environment. The following fluvial sedimentary processes were inferred: (1) shallow, rapid flow alternating with waning flow, (2) infilling of erosional channels with fluvial sediments during flood events, (3) changes from supercritical to subcritical flows, and (4) shallow sheet floods. The results of OSL dating indicated sediment deposition ~65.2 ±1.5 ka, i.e. in MIS 4, that was here characterized by cold environmental conditions and a general shift from meandering to braided fluvial sedimentation style. This finding contrasts with accumulation/erosion phases interpreted previously in this region for that time interval; however, it is consistent with recent studies of fluvial systems functioning during MIS 5-2 and of factors responsible for sedimentation style.
Źródło:: Geological Quarterly; 2020, 64, 4; 915--930
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: New luminescence ages reveal Early to Middle Weichselian deposits in central Latvia
Autorzy:: Lamsters, K.
Kalińska-Nartiša, E.
Zelčs, V.
Alexanderson, H.
Powiązania:: https://bibliotekanauki.pl/articles/2060383.pdf
Data publikacji:: 2017
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: optically stimulated luminescence (OSL) dating
subglacial bedforms
Early Weichselian
Middle Weichselian
central Latvia
Opis:: New optically stimulated luminescence (OSL) ages show that sandy deposits overlain by Late Weichselian subglacial till in central Latvia are of Early to Middle Weichselian age. The finer chronological resolution of unconsolidated sediment deposition in the Central Latvian Lowland (CLL) remains relatively unstudied, and here we provide a first characterisation of the deposits with respect to their age. Three OSL ages ranging between 84 ± 9 ka and 112 ± 11 ka suggest that the deposits studied in the CLL are of Early Weichselian age (MIS 5). We found no Middle Weichselian deposits in the CLL, and assume that any such younger sediments might have been eroded during the advance of the Zemgale Lobe in the Late Weichselian. One site, in the ice-marginal zone adjacent to the interlobate area, has nevertheless deposits dated to 44 ± 10 ka corresponding to the Middle Weichselian (MIS 3). Our results are compatible with existing ESR ages on three sets of Portlandia arctica shells from the central part of the lowland; the shells had been incorporated into glacial deposits during later glacial advances. Finally, our findings largely support ice-free conditions during the Early and Middle Weichselian in the middle and southern part of central Latvia.
Źródło:: Geological Quarterly; 2017, 61, 2; 480--490
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

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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Skocz do pozycji: 10.

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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Skocz do pozycji: 11.

Tytuł:: Middle pleistocene stratigraphy in the light of data from the vilkiskes site, eastern Lithuania
Autorzy:: Satkunas, J.
Molodkov, A.
Powiązania:: https://bibliotekanauki.pl/articles/1186131.pdf
Data publikacji:: 2005
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: lacustrine sedimentation
sandy deposits
OSL dating
Drenthe-Warthe Interstadial
Vilkiskes ice free interval
Quaternary
eastern Lithuania
Opis:: The Vilkiskes outcrop is approximately 40 metres high section of Quaternary sandy sediments, exposed in the slope of the Neris River valley and is located 15 km upstream from the city of Vilnius. The section is composed mainly of sand with one till layer in the middle part. The outcrop is of particular interest due to typical section of sandy formation presumably of lacustrine origin, occurring under the till. This formation is widely distributed in the vast area in between Vilnius city and Nemencine town, according to the data of geological mapping, and represents a particular period of nonglacial sedimentation of Saalian time. The new optically stimulated luminescence (OSL) dates (determined by A. Molodkov), obtained from the Vilkiskes section, fall into the time span of 307-230 and 147-137 ka. The age of the lower part of Vilkiskes lacustrine section (dated 307-230 ka by OSL) looks closest to the two ice free stages, which can be correlated with oxygen isotope stages (OIS) 7 (236-186 ka) and OIS 9 (328-301 ka). Ages of about 147.1 and 136.7 ka are obtained near the immediate contact with the underlying glacial lithocomplex. Assuming OSL ages, conditions of occurrence and palaeopalynological characteristics, the interval of the Vilkiskes outcrop with OSL dates falling into the time span 236-186 ka (OIS 7) can be introduced as the last Middle Pleistocene (Drenthe-Warthe) ice free interval in Lithuania, most probably, separating the Zemaitija and Medininkai stadials. The interval dated 147.1 and 136.7 ka is interpreted as the Pamarys Interstadial that tentatively can be correlated with the Zeifen Interstadial in the Kattegat Depression suggesting the existence of a ?Younger Dryas?-type climate oscillation just prior to the OIS 6/5e boundary.
Źródło:: Polish Geological Institute Special Papers; 2005, 16; 94--102
1507-9791
Pojawia się w:: Polish Geological Institute Special Papers
Dostawca treści:: Biblioteka Nauki