Anna Pazdur
Dados Biográficos
| ID | 4975533 |
|---|---|
| NOME | Anna Pazdur |
| PRENOMES | Anna |
| SOBRENOME | Pazdur |
| ASSINATURA | PAZDUR A |
| AFILIAÇÕES | Silesian University of Technology |
| ORCID | 0000-0002-6078-798X |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 55 |
| TOTAL DE CITAÇÕES | 275 |
| TOTAL COMO AUTOR | 55 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1978 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2024 |
| ÍNDICE H | 8 |
Temporal Stability of Climatic Signal Recorded by Stable Carbon Isotope Composition of Tree Rings Α-Cellulose—a Case Study for Suwałki Region
Investigations of stable carbon isotope composition in α-cellulose extracted from tree rings of pines ( Pinus sylvestris L.) growing in the unpolluted Suwałki region, northeastern part of Poland, are undertaken. The presented carbon isotope record covers the period of 1931–2003. Values of δ 13 C measured in the tree ring α-cellulose are compared to meteorological data. These δ 13 C values in tree ring cellulose respond to summer temperature, inso…
Human Activity Recorded in Carbon Isotopic Composition of Atmospheric CO 2 in Gliwice Urban Area and Surroundings (Southern Poland) in the Years 2011–2013
In this paper, a record of the 14 C and 13 C isotope content of atmospheric CO 2 for Gliwice is presented for samples collected on a weekly basis in the years 2011–2013. In addition, measurements were performed on the early and late wood from the annual rings of pine trees from five sites located 3–6 km from the atmospheric CO 2 sampling point. The concentration of 14 C in CO 2 samples from the air was much lower relative to the concentration of …
Progress in the holocene chrono-climatostratigraphy of Polish territory
The Holocene delivers a unique possibility to establish climatic stratigraphic boundaries based on detailed chronostratigraphy reflected in various facies of continental sediments, in their lithological parameters and organic remains. These sediments are dated by the 14C method in the case of organic remains, by counting annual laminations in lacustrine facies, and by dendrochronological method in the case of fluvial sediments. The existence of w…
Hydrological Changes After the Last Ice Retreat in Northern Poland Using Radiocarbon Dating
A simplified model of hydrological changes during the Late Glacial and Holocene is presented for the northern Polish regions that were ice covered during the Last Glacial. This reconstruction is based on a group of 197 radiocarbon dates from about 120 localities reflecting the sequence of alternating lake transgressions and regressions. The earliest transgressions were related to dead-ice melting (sometimes in 2–3 phases), while the later ones st…
Radiocarbon Concentration in Annual Tree Rings from the Salamanca Region, Western Spain
Tree-ring samples were taken from a from a pine tree ( Pinus pinea ) growing in Villar de Peralonso, a rural area 50 km west of the city of Salamanca, Spain. All samples were processed to extract α-cellulose and the radiocarbon concentration in each annual ring was measured using accelerator mass spectrometry (AMS) at the University of Nagoya, Japan. The data set covers a growth period between 1979 and 2006, and represents the concentrations of 1…
Carbon Isotope Composition of Atmospheric Carbon Dioxide in Southern Poland
Southern Poland is home to numerous large mining and energy industry facilities, which consume relatively great amounts of fossil fuels. Temporal and spatial distribution of CO2 emissions to the atmosphere were estimated on the basis of 13C and 14C isotope measurements in atmospheric CO2 and in α-cellulose from pine tree rings. The Suess effect was evaluated in the atmospheric CO2 from the High Tatra Mountains (Kasprowy Wierch) and the urban area…
Carbon Isotope Composition of Atmospheric Carbon Dioxide in Southern Poland
Southern Poland is home to numerous large mining and energy industry facilities, which consume relatively great amounts of fossil fuels. Temporal and spatial distribution of CO 2 emissions to the atmosphere were estimated on the basis of 13 C and 14 C isotope measurements in atmospheric CO 2 and in α-cellulose from pine tree rings. The Suess effect was evaluated in the atmospheric CO 2 from the High Tatra Mountains (Kasprowy Wierch) and the urban…
A millennial record of environmental change in peat deposits from the Misten bog (East Belgium)
Late-Holocene evolution of a floodplain impounded by the Smrdutá landslide, Carpathian Mountains (Czech Republic)
Landslides affecting narrow mountainous valleys might significantly determine sedimentation dynamics of floodplains. We present here a detailed study of the sedimentary archive within a landslide-controlled impounded floodplain (Smrdutá site, Czech Flysch Carpathians) using geochronological ( 14 C and 137 Cs), sedimentological and pollen evidence. A sedimentary sequence deposited above the landslide dam points to three highly discontinuous and in…
C Dating with the Icels Liquid Scintillation Counting System Using Fixed-Energy Balance Counting Window Method
This article presents an application of a fixed-energy balance counting window in radiocarbon dating of geological peat samples. We determine a fixed-energy balance counting window with an inexpensive liquid scintillation counting ICELS system. We show long-term modern biosphere standard records that show stability sufficient for dating samples up to approximately 30,000 14 C yr BP. We then compare our results to ones obtained previously using a …
The Application of Icels Systems for Radiocarbon Dating
Liquid scintillation counting (LSC) for radiocarbon dating is a less expensive method than accelerator mass spectrometry (AMS), provides a high degree of accuracy, and is less prone to contamination due to the larger sample sizes. However, to obtain high precision, a long counting time is needed. The Gliwice Radiocarbon Laboratory is seeking to obtain an increased counting capacity with 2–3 mL benzene samples than we presently can achieve with ou…
Absolute Radiocarbon Chronology in the Formative Pottery Production Center of Santa Lucía, Cochabamba, Bolivia
Santa Lucía is a pottery production site dating to the Formative period (about 1600 BC to AD 200). It is located in the Cochabamba valleys of the eastern Bolivian Andes. The settlement consists of a residential area and a separate workshop area. A peripheral sector of ash mounds was used as refuse sites and burial grounds. The excavations yielded a total of 16 radiocarbon samples from all 3 sectors, which were dated at the Gliwice Radiocarbon Lab…
Chronology of the Early Pre-Pottery Neolithic Settlement Tell Qaramel, Northern Syria, in the Light of Radiocarbon Dating
Archaeological excavations at the Syrian settlement of Tell Qaramel have been conducted since 1999. They are concentrated on remnants of the Protoneolithic and early stages of the Pre-Pottery Neolithic period. The settlement has revealed an extremely rich collection of everyday use of flint, bone, and mostly stone objects, such as decorated chlorite or limestone vessels; shaft straighteners used to stretch wooden arrow shafts, richly decorated in…
Timescale for Climatic Events of Subboreal/Subatlantic Transition Recorded at the Valakupiai Site, Lithuania
Oxbow lake deposits of the Neris River at the Valakupiai site in Vilnius (Lithuania) have been studied by different methods including radiocarbon dating. A timescale was attained for the development of the oxbow lake and climatic events recorded in the sediments. 14 C dates obtained for 24 samples cover the range 990–6500 BP (AD 580 to 5600 BC). Medieval human activity was found in the upper part of the sediments. Mollusk fauna found in the basal…
Frequency Distribution of Radiocarbon Dates as a Tool for Reconstructing Environmental Changes
Large sets of radiocarbon dates of 1019 peat, 155 speleothem, and 100 tufa samples, as well as dates of 330 fluvial samples, were investigated in order to estimate environmental variability during the last 16,000 calendar years in Poland. All 14 C dating was carried out in the Gliwice Radiocarbon Laboratory, and results are stored in the RoS database. Probability density functions (PDFs) were created by summing up (on the calendar timescale) indi…
Radiocarbon Chronology of the Ancient Settlement in the Golan Heights Area, Israel
Carbonate binders from mortars and plasters as well as charcoal fragments sampled at the ancient settlement of Hippos (Sussita) have been subjected to radiocarbon dating by gas proportional counting (GPC) and accelerator mass spectrometry (AMS). Hippos is situated on the east coast of the Sea of Galilee (32°46′N, 35°39′E) at the top of a hill in the Golan Heights area, Israel. According to historical-archaeological data, the town had functioned s…
Carbon Isotopes in Tree Rings
New records of δ 13 C and Δ 14 C values in annual rings of pine and oak from different sites around the world were obtained with a time resolution of 1 yr. The results obtained for Europe (Poland), east Asia (Japan), and South America (Peru) are presented in this paper. The δ 13 C and radiocarbon concentration of α-cellulose from annual tree rings of pine and of the latewood of oak were measured by both accelerator mass spectrometry (AMS) and liq…
Radiocarbon Dating of the Temple of the Monkey—The Next Step Towards a Comprehensive Absolute Chronology of Pachacamac, Peru
The ongoing Ychsma Project aims to shed light on the chronology and function of the late Prehispanic period at the well-known archaeological site of Pachacamac, Peru, through extensive archaeological research. The Temple of the Monkey is a special building that has been cleared, mapped, and excavated within the general framework of the study of “pyramids with ramps,” the most common form of monumental architecture at the site. Through the applica…
Archaeological Cultures on the Background of Climatic Changes in the Holocene, Poland
Frequency distributions of calibrated radiocarbon dates for some of the archaeological sites from the Holocene are compared with climatic records shown in frequency distributions of 14C data sets from speleothems, tufas and peat, laminae thickness, temperature and lake water changes for Poland, Central Europe. All archaeological and environmental events presented using the calendar time scale [BC/AD] are based on 14C dating performed in the Gliwi…
Shape Analysis of Cumulative Probability Density Function of Radiocarbon Dates Set in the Study of Climate Change in the Late Glacial and Holocene
We report on a statistical analysis of a large set of radiocarbon dates for reconstruction of paleoclimate. Probability density functions were constructed by summing the probability distributions of individual 14 C dates. Our analysis was based on 2 assumptions: 1) The amount of organic matter in sediments depends on paleogeographical conditions; 2) The number of 14 C-dated samples is proportional to the amount of organic matter deposited in sedi…
Radiocarbon Concentration in the Atmosphere and Modern Tree Rings in the K0052Aków Area, Southern Poland
New results of radiocarbon concentration in tree rings from the Kraków region covering a growth period of 20 yr have been analyzed, and the relationship between them and 14 C concentrations in the atmospheric CO 2 are described. This enabled assessment of the uptake period for pine trees at the regional climatic conditions. Both sets of data show lower 14 C concentrations than reported for “clean air” at the reference station, indicating a remark…
Carbon Isotopic Composition of Tree Rings as A Tool for Biomonitoring CO 2 Level
Carbon isotopes are widely used as indicators in the study of atmospheric CO 2 variability in space and time. Preliminary results are part of a project investigating 13 C and 14 C concentration changes during the last 150 yr in Poland, both in industrial and ecologically clean regions, using annual tree rings ( Pinus sylvestris, Populus nigra ). The results describe the local Suess effect recorded in the industrial Kraków and Upper Silesia region…
C Chronology of Mesolithic Sites from Poland and the Background of Environmental Changes
Mesolithic sites in modern Poland are mainly located in the southern part of the country. Radiocarbon dating of organic material, such as charcoals, wood, and peat, provide a time frame of human settlements in those regions, and dating of speleothems and peat formations provide information on climatic conditions and the timing of climatic change in the region. Here, we present the results of calibrated 14 C ages from 3 main Mesolithic sites: Glan…
C Absolute Chronology of Pyramid III and the Dynastic Model at Pachacamac, Peru
Pachacamac, covering an area of about 600 hectares (ha) near the Pacific shore, is one of the largest and most important archaeological sites in Peru. Most of the monumental adobe-made buildings of the later pre-Inca period (or Late Intermediate Period, about 10th–15th century AD) are so-called pyramids with ramps (the role of the ramps has been interpreted in different ways). Precise dating of the pyramids appears as a crucial step in defining t…
The Early Upper Palaeolithic in Greece
The Early Upper Palaeolithic in Greece
Carbon Isotopes in Tree Rings
New records of δ 13 C and Δ 14 C values in annual rings of pine and oak from different sites around the world were obtained with a time resolution of 1 yr. The results obtained for Europe (Poland), east Asia (Japan), and South America (Peru) are presented in this paper. The δ 13 C and radiocarbon concentration of α-cellulose from annual tree rings of pine and of the latewood of oak were measured by both accelerator mass spectrometry (AMS) and liq…
Shape Analysis of Cumulative Probability Density Function of Radiocarbon Dates Set in the Study of Climate Change in the Late Glacial and Holocene
We report on a statistical analysis of a large set of radiocarbon dates for reconstruction of paleoclimate. Probability density functions were constructed by summing the probability distributions of individual 14 C dates. Our analysis was based on 2 assumptions: 1) The amount of organic matter in sediments depends on paleogeographical conditions; 2) The number of 14 C-dated samples is proportional to the amount of organic matter deposited in sedi…
Radiocarbon Chronology of the Ancient Settlement in the Golan Heights Area, Israel
Carbonate binders from mortars and plasters as well as charcoal fragments sampled at the ancient settlement of Hippos (Sussita) have been subjected to radiocarbon dating by gas proportional counting (GPC) and accelerator mass spectrometry (AMS). Hippos is situated on the east coast of the Sea of Galilee (32°46′N, 35°39′E) at the top of a hill in the Golan Heights area, Israel. According to historical-archaeological data, the town had functioned s…
C Chronology of Mesolithic Sites from Poland and the Background of Environmental Changes
Mesolithic sites in modern Poland are mainly located in the southern part of the country. Radiocarbon dating of organic material, such as charcoals, wood, and peat, provide a time frame of human settlements in those regions, and dating of speleothems and peat formations provide information on climatic conditions and the timing of climatic change in the region. Here, we present the results of calibrated 14 C ages from 3 main Mesolithic sites: Glan…
Frequency Distribution of Radiocarbon Dates as a Tool for Reconstructing Environmental Changes
Large sets of radiocarbon dates of 1019 peat, 155 speleothem, and 100 tufa samples, as well as dates of 330 fluvial samples, were investigated in order to estimate environmental variability during the last 16,000 calendar years in Poland. All 14 C dating was carried out in the Gliwice Radiocarbon Laboratory, and results are stored in the RoS database. Probability density functions (PDFs) were created by summing up (on the calendar timescale) indi…
Carbon Isotopic Composition of Tree Rings as A Tool for Biomonitoring CO 2 Level
Carbon isotopes are widely used as indicators in the study of atmospheric CO 2 variability in space and time. Preliminary results are part of a project investigating 13 C and 14 C concentration changes during the last 150 yr in Poland, both in industrial and ecologically clean regions, using annual tree rings ( Pinus sylvestris, Populus nigra ). The results describe the local Suess effect recorded in the industrial Kraków and Upper Silesia region…
Changes of 14 C Concentration in Modern Trees from Upper Silesia Region, Poland
Radiocarbon concentration measurements in tree rings from Upper Silesia indicate significantly lower 14 C concentration as compared to the concentrations occurring in “clean air” areas. This phenomenon is known as the Suess effect and is caused by contamination with inactive carbon that originates from fossil fuels combustion. This effect is observed in large urban and industrial areas. Samples for the measurements presented in the paper were col…
Radiocarbon Dating of Holocene Calcareous Tufa in Southern Poland
Calcareous tufa from five sites in southern Poland, representing several most typical conditions of tufa sedimentation, were chosen for 14 C, 13 C, and 18 O measurements. These tufas were deposited in a high-energy turbulent stream (the Racławka site), in streams with moderate but variable flow (Rzerzuśnia and Trzebienice), and in semilimnic conditions (Sieradowice site). Sediments of the Gliczarów site represent spring travertines. In all but th…
Chronology of the Early Pre-Pottery Neolithic Settlement Tell Qaramel, Northern Syria, in the Light of Radiocarbon Dating
Archaeological excavations at the Syrian settlement of Tell Qaramel have been conducted since 1999. They are concentrated on remnants of the Protoneolithic and early stages of the Pre-Pottery Neolithic period. The settlement has revealed an extremely rich collection of everyday use of flint, bone, and mostly stone objects, such as decorated chlorite or limestone vessels; shaft straighteners used to stretch wooden arrow shafts, richly decorated in…
C Absolute Chronology of Pyramid III and the Dynastic Model at Pachacamac, Peru
Pachacamac, covering an area of about 600 hectares (ha) near the Pacific shore, is one of the largest and most important archaeological sites in Peru. Most of the monumental adobe-made buildings of the later pre-Inca period (or Late Intermediate Period, about 10th–15th century AD) are so-called pyramids with ramps (the role of the ramps has been interpreted in different ways). Precise dating of the pyramids appears as a crucial step in defining t…
Comparison of U-Series and Radiocarbon Dates of Speleothems
The paper presents a comparison of U-series and radiocarbon dates of speleothems collected in several caves in central and southern Europe and southeast Africa. Despite a large spread of dates, mainly due to contamination with younger carbon, the group of corresponding 14 C and 230 Th/U ages of speleothem samples seems to be coherent with the previous suggestion of large deviation between the 14 C and the absolute time scale between 35 and 45 ka …
Paleoclimatic Implications of Radiocarbon Dating Of Speleothems from the Cracow-Wieluń Upland, Southern Poland
We report preliminary results of a long-term systematic study intended to gather paleoclimatic records from precisely dated speleothems. The research project is limited to speleothems deposited in caves of the Cracow-Wieluń Upland, the largest and best-explored karst region in Poland, covering ca . 2900 km 2 with >1000 caves. Speleothem samples were selected from collections of the Geological Museum of the Academy of Mining and Metallurgy in Crac…
The Relations Between Carbon Isotope Composition and Apparent Age of Freshwater Tufaceous Sediments
This paper presents a synthetic approach to 14 C dating of calcareous tufa, based on statistical analysis of correlations betwen lithologic type of tufaceous sediment, carbon isotope composition, and apparent age. Experimental data on several profiles from southern Poland and the United Kingdom reveal either constant or systematically changing values of apparent age. Constant value of apparent age in a profile can be attributed to calcareous muds…
Gliwice Radiocarbon Dates VII
The following list contains the measurements of archaeologic samples made during 1978 and 1979 using carbon-dioxide-filled proportional counters. Most of the samples were dated with counter No. 3 (L3) filled to 1 or 2 atm pressure (Mościcki and Zastawny, 1977). Our counter No. 1 (L1) previously described (Mościcki and Zastawny, 1976) has been remounted and is now operating at 2 atm pressure of carbon dioxide. Samples measured with this counter ha…
Carbon Isotope Composition of Atmospheric Carbon Dioxide in Southern Poland
Southern Poland is home to numerous large mining and energy industry facilities, which consume relatively great amounts of fossil fuels. Temporal and spatial distribution of CO 2 emissions to the atmosphere were estimated on the basis of 13 C and 14 C isotope measurements in atmospheric CO 2 and in α-cellulose from pine tree rings. The Suess effect was evaluated in the atmospheric CO 2 from the High Tatra Mountains (Kasprowy Wierch) and the urban…
Radiocarbon Dating of the Temple of the Monkey—The Next Step Towards a Comprehensive Absolute Chronology of Pachacamac, Peru
The ongoing Ychsma Project aims to shed light on the chronology and function of the late Prehispanic period at the well-known archaeological site of Pachacamac, Peru, through extensive archaeological research. The Temple of the Monkey is a special building that has been cleared, mapped, and excavated within the general framework of the study of “pyramids with ramps,” the most common form of monumental architecture at the site. Through the applica…
Gliwice Radiocarbon Dates IV
All samples described in this date list have been measured since July 1973 to Oct 1975 using carbon dioxide filled proportional counters. Most of samples have been dated with Counter No. 1 (LI) as in our previous list (Mościcki and Zastawny, 1976). Some samples were measured with Counter No. 3 (L3), with a total volume of 1.51 and background and NBS oxalic acid standard counting rate of respectively, 3.50 or 4.00 cpm and 10.05 or 20.40 cpm when f…
Commissioning of a Quantulus 1220 TM Liquid Scintillation Beta Spectrometer for Measuring 14 C and 3 H at Natural Abundance Levels
In 1994, the Gliwice Radiocarbon Laboratory began operating a liquid scintillation spectrometry system, consisting of a Quantulus 1220 TM spectrometer and two vacuum rigs for benzene production. This paper describes the procedures used for the benzene synthesis from samples containing
Gliwice Radiocarbon Dates V
Most of the dates reported in this list were obtained between November 1975 and December 1976. All samples were subjected to standard de Vries pretreatment. Age calculations are based on a contemporary value equal to 0.95 of the activity of NBS oxalic acid standard and on the Libby value for the half-life of radiocarbon. Results are reported as conventional radiocarbon dates in years before ad 1950. All measurements were made with our L1 counter …
Human Activity Recorded in Carbon Isotopic Composition of Atmospheric CO 2 in Gliwice Urban Area and Surroundings (Southern Poland) in the Years 2011–2013
In this paper, a record of the 14 C and 13 C isotope content of atmospheric CO 2 for Gliwice is presented for samples collected on a weekly basis in the years 2011–2013. In addition, measurements were performed on the early and late wood from the annual rings of pine trees from five sites located 3–6 km from the atmospheric CO 2 sampling point. The concentration of 14 C in CO 2 samples from the air was much lower relative to the concentration of …
Gliwice Radiocarbon Dates XI
The following list presents results of dating archaeological samples from Poland processed between 1979 and 1985. Three carbon dioxide-filled proportional counters (L1, L2 and L3) of different sizes were used for dating (Pazdur et al. 1982). Procedures for sample pretreatment, counting, statistical analysis and age calculations were essentially the same as previously described (Pazdur et al. 1982, 1985). All results are reported as conventional 1…
C Dating of Calcareous Tufa from Different Environments
14 C dates of carbonate and organic matter fractions are compared with a series of calcareous tufa samples from selected sites representing different geochemical environments and associated with different bedrocks. Results obtained in this study indicate values of apparent age ranging from 940 ± 110 yr for calcareous tufas associated with Pleistocene sediments to 2000 ± 110 yr and even ca 4000 yr for tufas from sites associated with Jurassic or C…
Radiocarbon Concentration in Annual Tree Rings from the Salamanca Region, Western Spain
Tree-ring samples were taken from a from a pine tree ( Pinus pinea ) growing in Villar de Peralonso, a rural area 50 km west of the city of Salamanca, Spain. All samples were processed to extract α-cellulose and the radiocarbon concentration in each annual ring was measured using accelerator mass spectrometry (AMS) at the University of Nagoya, Japan. The data set covers a growth period between 1979 and 2006, and represents the concentrations of 1…
Radiocarbon Concentration in the Atmosphere and Modern Tree Rings in the K0052Aków Area, Southern Poland
New results of radiocarbon concentration in tree rings from the Kraków region covering a growth period of 20 yr have been analyzed, and the relationship between them and 14 C concentrations in the atmospheric CO 2 are described. This enabled assessment of the uptake period for pine trees at the regional climatic conditions. Both sets of data show lower 14 C concentrations than reported for “clean air” at the reference station, indicating a remark…
Gliwice Radiocarbon Dates IV
All samples described in this date list have been measured since July 1973 to Oct 1975 using carbon dioxide filled proportional counters. Most of samples have been dated with Counter No. 1 (LI) as in our previous list (Mościcki and Zastawny, 1976). Some samples were measured with Counter No. 3 (L3), with a total volume of 1.51 and background and NBS oxalic acid standard counting rate of respectively, 3.50 or 4.00 cpm and 10.05 or 20.40 cpm when f…
Gliwice Radiocarbon Dates V
Most of the dates reported in this list were obtained between November 1975 and December 1976. All samples were subjected to standard de Vries pretreatment. Age calculations are based on a contemporary value equal to 0.95 of the activity of NBS oxalic acid standard and on the Libby value for the half-life of radiocarbon. Results are reported as conventional radiocarbon dates in years before ad 1950. All measurements were made with our L1 counter …
Gliwice Radiocarbon Dates VI
Results presented in this date list have been obtained from Jan 1977 to Dec 1977, but some earlier measurements are also included. All calculations are based on a contemporary value equal to 0.95 of the activity of NBS oxalic acid standard and on the Libby value for the half-life of radiocarbon. Ages are reported as conventional radiocarbon dates in years before AD 1950. No corrections for 13 C/ 12 C ratio were made for measurements reported in t…
Gliwice Radiocarbon Dates VII
The following list contains the measurements of archaeologic samples made during 1978 and 1979 using carbon-dioxide-filled proportional counters. Most of the samples were dated with counter No. 3 (L3) filled to 1 or 2 atm pressure (Mościcki and Zastawny, 1977). Our counter No. 1 (L1) previously described (Mościcki and Zastawny, 1976) has been remounted and is now operating at 2 atm pressure of carbon dioxide. Samples measured with this counter ha…
Gliwice Radiocarbon Dates VIII
The following list sums up the results of radiocarbon dating of geologic samples obtained mostly during 1978 and 1979. Measurements have continued with the same proportional counters, pretreatment procedures, carbon dioxide purification, measurement and calculation as described previously (Pazdur et al , 1982). Ages are reported as conventional radiocarbon dates in years before ad 1950. No corrections for 13 C/ 12 C ratio were made for samples re…
Gliwice Radiocarbon Dates IX
The following list contains most of the measurements of geologic samples made during 1979 and 1980 using carbon-dioxide-filled proportional counters. Samples with laboratory numbers > 1000 were counted with counter No. 1 (L1), and those with numbers
Gliwice Radiocarbon Dates X
The following list contains all age measurements of paleoenvironmental samples made from 1978 to the end of 1982 for the IGCP 158 Project “Paleohydrological changes in the temperate zone in the last 15,000 years,” Subproject B “Lake and mire environments” (Berglund, 1979), initiated by Bjorn Berglund and Leszek Starkel in 1976. The aim of this project was to reconstruct environmental changes related to climate and human activity in the temperate …
C Dating of Calcareous Tufa from Different Environments
14 C dates of carbonate and organic matter fractions are compared with a series of calcareous tufa samples from selected sites representing different geochemical environments and associated with different bedrocks. Results obtained in this study indicate values of apparent age ranging from 940 ± 110 yr for calcareous tufas associated with Pleistocene sediments to 2000 ± 110 yr and even ca 4000 yr for tufas from sites associated with Jurassic or C…
Early Slavonic Settlements and Navigation at the Mouth of the Odra River
An attempt is presented to establish an absolute chronology of early Slavonic habitation in the region of the mouth of the Odra River up to the Baltic and to find associations with a series of stave boats and dugouts of different levels of technology and navigation. The methodology of the research project is presented and some conclusions of a general nature are drawn from the results already obtained
Stable Isotopes of Holocene Calcareous Tufa in Southern Poland as Paleoclimatic Indicators
The isotopic composition of oxygen in freshwater calcareous tufa seems to be a sensitive indicator of past climatic changes. Results of measurements of δ c 18 O and δ c 13 C in tufa samples dated with the 14 C method are used to reconstruct Holocene climatic changes in southern Poland. Values of δ c 18 O obtained on tufa samples from four sites (Raclawka, Rzerzuŝnia, Trzebienice, Sieradowice) representing different hydrodynamic conditions of tufa…
Radiocarbon Dating of Holocene Calcareous Tufa in Southern Poland
Calcareous tufa from five sites in southern Poland, representing several most typical conditions of tufa sedimentation, were chosen for 14 C, 13 C, and 18 O measurements. These tufas were deposited in a high-energy turbulent stream (the Racławka site), in streams with moderate but variable flow (Rzerzuśnia and Trzebienice), and in semilimnic conditions (Sieradowice site). Sediments of the Gliczarów site represent spring travertines. In all but th…
The Relations Between Carbon Isotope Composition and Apparent Age of Freshwater Tufaceous Sediments
This paper presents a synthetic approach to 14 C dating of calcareous tufa, based on statistical analysis of correlations betwen lithologic type of tufaceous sediment, carbon isotope composition, and apparent age. Experimental data on several profiles from southern Poland and the United Kingdom reveal either constant or systematically changing values of apparent age. Constant value of apparent age in a profile can be attributed to calcareous muds…
Radiocarbon and Varve Chronologies of Annually Laminated Lake Sediments of Gościαz Lake, Central Poland
A sequence of annually laminated sediments of the Gościαz Lake spans ca 13,000 yr and is actually the longest known continuous sequence in the world. 14 C age measurements were performed on organic and carbonate fractions of bulk samples of laminated sediments from core GO. Accurate measurements of varve thickness performed on the lower part of cores G1 and G2 were used to establish a floating varve chronology covering ca 10,000 yr. Matching of c…
Systematic Biases in Results of the International Collaborative Study and Their Probable Sources
Results of the International Collaborative Study show an unexpectedly large scatter of individual dates as well as systematic biases. Very high values of linear correlation coefficients are observed for all results of Stage 2 and for benzene samples of Stage 1. We observed moderate correlations for carbonate samples and the lowest for natural samples of wood and peat of Stage 3. The correlation is practically negligible among results obtained in …
Further Investigations on 14 C Dating of Calcareous Tufa
Systematic studies on 14 C dating of tufa profiles in southern Poland have resulted in developing a simple phenomenological model which enables us to estimate the reservoir correction factor of 14 C dates of individual carbonate samples. We made further studies to test model assumptions and to verify relationships between the value of reservoir correction factor T R and 13 C content of tufa carbonate. Two new study sites, Rudawa and Szklarka, are…
Radiocarbon Chronology of Late Glacial and Holocene Sedimentation and Water-Level Changes in the Area of the Gościąż Lake Basin
We obtained 14 C ages on samples of lake marl and other sediments from cores taken in Gościąż Lake and its environs. Comparison of 14 C dates of bulk samples of laminated sediment with varve chronology and available AMS dates of terrestrial macrofossils indicates a reservoir correction of 2000 ± 120 yr for the basal series of lake sediments. 14 C dates obtained on peat layers underlying the oldest lacustrine sediments in Gościąż and other lakes c…
Gliwice Radiocarbon Dates XI
The following list presents results of dating archaeological samples from Poland processed between 1979 and 1985. Three carbon dioxide-filled proportional counters (L1, L2 and L3) of different sizes were used for dating (Pazdur et al. 1982). Procedures for sample pretreatment, counting, statistical analysis and age calculations were essentially the same as previously described (Pazdur et al. 1982, 1985). All results are reported as conventional 1…
Gliwice Radiocarbon Dates Xii
The following list presents results of dating archaeological samples from excavations in Africa. Most results reported in this list were obtained from 1982 to 1993 for international research projects studying the origin and early development of food-producing cultures in northeastern Africa, including the Nile basin and the Sahara. Detailed information on these projects may be found in the series of conference proceedings edited by Krzyżaniak and…
Mieczysław F. Pazdur, 1946–1995
This material was digitized as part of a cooperative project between Radiocarbon and the University of Arizona Libraries
A Data Acquisition System for Proportional Counters at Gliwice
We present here the principal ideas of a new, fully computerized data acquisition system with pulse-rise background reduction, developed in the Gliwice Radiocarbon Laboratory, and our first results. The new system uses a microprocessor-controlled pulse and coincidence analyzer for acquisition of data from 3 of 4 proportional counter sets. The analyzer acquires and stores information on the pulse's amplitudes and rise-times and their coincidence w…
Radiocarbon and Thermoluminescence Studies of the Karst Pipe Systems in Southwest England and South Wales
Paleokarst forms in raised beach deposits of Southwest England and South Wales and generally known as “pipes” were dated by 14 C and thermoluminescence (TL) methods. Current geological opinion is that these pipes are features that developed under the cover of periglacial-solifluctional deposits due to periglacial conditions prevalent in the Late Devensian. In the present study, TL was used to determine the age of quartz grains forming the raised …
Paleoclimatic Implications of Radiocarbon Dating Of Speleothems from the Cracow-Wieluń Upland, Southern Poland
We report preliminary results of a long-term systematic study intended to gather paleoclimatic records from precisely dated speleothems. The research project is limited to speleothems deposited in caves of the Cracow-Wieluń Upland, the largest and best-explored karst region in Poland, covering ca . 2900 km 2 with >1000 caves. Speleothem samples were selected from collections of the Geological Museum of the Academy of Mining and Metallurgy in Crac…
Lake-level and groundwater-level changes in the Lake Gosciąż area, Poland
Lake Gosciąz is located in the zone of the maximum extent of the last ice sheet. Distinct lake terraces and deposits related to the lateglacial transgression do not exist. Detailed examination of annually laminated sediments and landforms revealed three phases of higher water level and storage, represented by shore features, by littoral, deltaic and bog deposits, and by higher rates of lacustrine deposition in the pelagic zone. Holocene lake tran…
Estimation of Gas Purity in a CO 2 -Filled Proportional Counter by Rise-Time Analysis
Since 1994, a new data-acquisition system with rise-time (RT) based background reduction has been in operation at the Gliwice Radiocarbon Laboratory. During long-term stability tests, we observed large shifts in the RT spectra obtained during various measurement series. These shifts caused important changes in the count rate measured with RT reduction. As a result, we have ascertained that the shifts are the consequence of variable concentration …
Commissioning of a Quantulus 1220 TM Liquid Scintillation Beta Spectrometer for Measuring 14 C and 3 H at Natural Abundance Levels
In 1994, the Gliwice Radiocarbon Laboratory began operating a liquid scintillation spectrometry system, consisting of a Quantulus 1220 TM spectrometer and two vacuum rigs for benzene production. This paper describes the procedures used for the benzene synthesis from samples containing
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