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Radiocarbon. 1982; 24(2): 171-181. Published 1982 Jan 01. doi: 10.1017/s0033822200005026. (1)
Radiocarbon. 1982; 24(2): 182-193. Published 1982 Jan 01. doi: 10.1017/s0033822200005038. (1)
Radiocarbon. 1983; 25(3): 843-866. Published 1983 Jan 01. doi: 10.1017/s003382220000624x. (1)
Radiocarbon. 1985; 27(1): 52-73. Published 1985 Jan 01. doi: 10.1017/s0033822200006937. (1)
Radiocarbon. 1995; 37(2): 111-117. Published 1995 Jan 01. doi: 10.1017/s003382220003054x. (1)
Radiocarbon. 2004; 46(1): 181-187. Published 2004 Jan 01. doi: 10.1017/s0033822200039503. (1)
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Radiocarbon and Thermoluminescence Studies of the Karst Pipe Systems in Southwest England and South Wales (1995)

Pazdur, Mieczysław F. ; Bluszcz, Andrzej ; Pazdur, Anna ; [et al.]

Cambridge University Press

In: Radiocarbon. 1995; 37(2): 111-117. Published 1995 Jan 01. doi: 10.1017/s003382220003054x.

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Publication Date: 1995-01-01

Description: Paleokarst forms in raised beach deposits of Southwest England and South Wales and generally known as “pipes” were dated by 14C 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 beaches. 14C ages were obtained from carbonate cements within sandrock and on the pipe walls. TL ages measured for quartz grains separated from sandrock samples are older than 80 ka bp, whereas the corresponding TL dates obtained from the sandy material of pipe infills center around 40 ka bp. All carbonates yielded finite apparent 14C dates that range from ca. 45 ka bp to 27 ka bp for sandrock. The apparent 14C dates obtained on carbonate cements from the pipe walls fall into two groups, one ranging from 30 ka bp to 22 ka bp and the other from 15 ka bp to 7 ka bp. On the basis of geochemical considerations, we conclude that the sandrock cements formed between 35 and 25 ka bp and pipe walls cemented between 30 and 2 ka bp with a break during the climate deterioration caused by last ice sheet advance.

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Electronic ISSN: 1945-5755

Topics: Archaeology , Energy, Environment Protection, Nuclear Power Engineering , Geosciences

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Gliwice Radiocarbon Dates VIII (1982)

Pazdur, Mieczysław F ; Awsiuk, Romuald ; Bluszcz, Andrzej ; [et al.]

Cambridge University Press

In: Radiocarbon. 1982; 24(2): 182-193. Published 1982 Jan 01. doi: 10.1017/s0033822200005038.

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Publication Date: 1982-01-01

Description: 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 13C/12C ratio were made for samples reported in this date list. Infinite dates are based on a 2-sigma criterion (Pazdur and Walanus, 1979). Sample descriptions and comments are based on information provided by the submitters.

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Topics: Archaeology , Energy, Environment Protection, Nuclear Power Engineering , Geosciences

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Gliwice Radiocarbon Dates VII (1982)

Pazdur, Anna ; Awsiuk, Romuald ; Bluszcz, Andrzej ; [et al.]

Cambridge University Press

In: Radiocarbon. 1982; 24(2): 171-181. Published 1982 Jan 01. doi: 10.1017/s0033822200005026.

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Publication Date: 1982-01-01

Description: 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 have date numbers starting with Gd-1000. Parameters of proportional counters are listed in Table 1. Our transistorized electronics is being gradually replaced by more compact integrated-circuit electronics in CAMAC system (Bluszcz and Walanus, 1980). Counts from proportional counter and guard counters are recorded in 5 channels and punched every 100 minutes. Typical measurement of any sample, including background and oxalic acid samples, consists of a series of 20 to 25 partial measurements. Partial results obtained in such series are analyzed on ODRA 1325 computer at the Computing Centre of the Silesian Technical University according to code C14C written in ALGOL (Pazdur and Walanus, 1979). Age calculations are based on 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. Corrections for isotopic fractionation in nature are made only for some samples with indicated values of δ13C Errors quoted (±1σ) include estimated overall standard deviations of count rates of the unknown sample, contemporary standard, and background (Pazdur and Walanus, 1979).

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Gliwice Radiocarbon Dates X (1985)

Pazdur, Mieczysław F ; Awsiuk, Romuald ; Bluszcz, Andrzej ; [et al.]

Cambridge University Press

In: Radiocarbon. 1985; 27(1): 52-73. Published 1985 Jan 01. doi: 10.1017/s0033822200006937.

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Publication Date: 1985-01-01

Description: 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 zone of Asia, Europe, and North America. Broad environmental reconstructions will be based upon a network of reference sites representing the natural geographic regions, distinguished by their geology, climate, vegetation, and other natural factors, according to Berglund (1979). The subdivision of Poland into 29 paleoecological units according to Ralska-Jasiewiczowa (1982) is presented in table 1, and in figure 1 where reference sites dated by 14C in our lab are also indicated.

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Extraction and AMS Radiocarbon Dating of Pollen from Lake Baikal Sediments (2004)

Piotrowska, Natalia ; Bluszcz, Andrzej ; Demske, Dieter ; [et al.]

Cambridge University Press

In: Radiocarbon. 2004; 46(1): 181-187. Published 2004 Jan 01. doi: 10.1017/s0033822200039503.

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Publication Date: 2004-01-01

Description: This work focuses on the preparation and dating of sporomorph (pollen and spores) concentrates of high purity. Three sediment cores recovered from Lake Baikal within the EU-Project CONTINENT were subjected to palynological analyses and accelerator mass spectrometry (AMS) radiocarbon dating. Laboratory processing of concentrates was aimed at the removal of non-sporomorph organic matter by means of chemical treatment, micro-sieving, and heavy liquid separation. The obtained concentrates were checked under the microscope and sample purity was estimated on the basis of particle counts. The results of AMS 14C dating show differences in the sedimentation rate among 3 sites of Lake Baikal.

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Gliwice Radiocarbon Dates IX (1983)

Pazdur, Mieczysław F ; Awsiuk, Romuald ; Bluszcz, Andrzej ; [et al.]

Cambridge University Press

In: Radiocarbon. 1983; 25(3): 843-866. Published 1983 Jan 01. doi: 10.1017/s003382220000624x.

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Publication Date: 1983-01-01

Description: 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 〈 1000, with counter No. 3 (L3), described by Mościcki and Zastawny (1977). Actual parameters of both counters were given in our previous date list (R, 1982, v 24, p 172).

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