Results 21 to 30 of about 10,153 (261)
Radiocarbon Dating of Intercomparison Samples at the Zagreb Radiocarbon Laboratory [PDF]
Radiocarbon, 1990 The Radiocarbon and Tritium Laboratory of the Rudjer Bošković Institute, Zagreb, participated in the International Collaborative Study (ICS) in all three stages. All measurements were made by proportional counting of methane. We present here a statistical analysis of our results. A comparison with the mean or median values of reported ICS values showed
Obelić, Bogomil +3 more
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Belfast Radiocarbon Dates VI [PDF]
Radiocarbon, 1970 The dating equipment and operating conditions remain essentially as previously described. This list includes some small samples counted at a filling pressure equivalent to 76cm Hg. at 20°C. Carbon isotope ratios were obtained and calculated as described (R., 1973, v. 15, p. 212). All samples are from Ireland.
A. G. Smith +2 more
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Biases in radiocarbon dating of organic fractions in sediments from meromictic and seasonally hypoxic lakes [PDF]
Bulletin of the Geological Society of Finland, 2019 We present here radiocarbon dating results from two boreal lakes in Finland, which are permanently (meromictic) or seasonally stratified and contain continuous sequences of annually laminated sediments that started to form in the early Holocene.
Antti E.K. Ojala +4 more
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Social and biophysical vulnerability of prehistoric societies to Rapid Climate Change
Documenta Praehistorica, 2010 Previous studies of the impact of Rapid Climate Change (RCC) on prehistoric com- munities have often been restricted in their explanatory power due to the lack of an appropriate analytical tool capable of combining palaeoclimate data with archaeological ...
Lee Clare, Bernhard Weninger
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Molecules, 2023 The investigation of the impact of the Fukushima accident is still going on although more than ten years have passed since the disaster. The main goal of this paper was to summarize the results of tritium and radiocarbon determinations in different ...
Jakub Kaizer +2 more
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Concepts of probability in radiocarbon analysis
Documenta Praehistorica, 2011 In this paper we explore the meaning of the word probability, not in general terms, but restricted to the field of radiocarbon dating, where it has the meaning of ‘dating probability assigned to calibrated 14C-ages’.
Bernhard Weninger +3 more
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Radiocarbon, Ltd. Natural Radiocarbon Measurements I [PDF]
Radiocarbon, 1971 Radiocarbon, Ltd. is a privately owned laboratory designed to provide quality service to the archaeologic and geologic communities. Operations began in 1969 using standard techniques for preparation, conversion to CO2, and purification of samples prior to counting.
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Documenta Praehistorica, 2008 This paper proposes an association between climate forcing connected with the 8200 calBP ‘climate event’ and a postulated phase of internecine warfare and population collapse at Late Neolithic/Early Chalcolithic sites in Pisidia, southwestern Turkey.
Lee Clare +3 more
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Geophysical Research Letters, 2020 Detailed organic geochemical and carbon isotopic (δ13C and Δ14C) analyses are performed on permafrost deposits affected by coastal erosion (Herschel Island, Canadian Beaufort Sea) and adjacent marine sediments (Herschel Basin) to understand the fate of ...
H. Grotheer +9 more
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Geochemistry, Geophysics, Geosystems, 2023 In the past century, most eruptions of Steamboat Geyser in Yellowstone National Park's Norris Geyser Basin were mainly clustered in three episodes: 1961–1969, 1982–1984, and ongoing since 2018. These eruptive episodes resulted in extensive disturbance to
Shaul Hurwitz +7 more
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