Results 21 to 30 of about 6,889 (226)
Лëд и снег, 2019 The syngenetic ice and ice-ground composite veins in khasyrey (alas) and interalas plateaus were studied on the second lake-alluvial terrace located in the North of the Gydan Peninsula near the village of Gyda. On the basis of the radiocarbon dating, the
Ya. V. Tikhonravova +8 more
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Calibration of Radiocarbon Ages by Computer [PDF]
Radiocarbon, 1989 A PC-based computer program for automatic calibration of 14C dates has been developed in Turbo-Pascal (version 4.0). It transforms the Gaussian 14C dating result on the 3σ level into a real calendar age distribution. It uses as a calibration curve a spline function, generated along the calibration data points as published in the Radiocarbon Calibration
Plicht, Johannes van der, Mook, W.G.
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Radiocarbon dating — modern state, problem, prospects of development and use in archaeology
Вестник археологии, антропологии и этнографии, 2016 Basic principles of radiocarbon dating are presented in the article. History of the method development and modern state are shown. Difficulties appeared under the radiocarbon dating and approaches, permitting to present the received results correctly are
Zazovskaya E.P.
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New hydroxyproline radiocarbon dates from Sungir, Russia, confirm early Mid Upper Palaeolithic burials in Eurasia. [PDF]
PLoS ONE, 2014 Sungir (Russia) is a key Mid-Upper Palaeolithic site in Eurasia, containing several spectacular burials that disclose early evidence for complex burial rites in the form of a range of grave goods deposited along with the dead.
Shweta Nalawade-Chavan +2 more
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Лëд и снег, 2019 The object of research is syncryogenic Holocene strata on the coast of the Onemen Bay, 2 km from the town of Anadyr. In July 2017, the outcrop of the first marine terrace uncovered by strong storms was examined.
N. A. Budantseva, Yu. A. Vasil'chuk
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The Effects of Contamination of Calcareous Sediments on their Radiocarbon Ages [PDF]
Radiocarbon, 1986 Two principal reasons for the inherent uncertainty in 14C dating of calcareous sediments such as tufa or those of lacustrine origin are the unknown initial 14C activity (Ao) of the sediment, mainly affecting younger (Holocene) samples, and contamination of older sediments with recent carbonate, causing 14C ages to be excessively young.
Srdoč, Dušan +4 more
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Anomalous radiocarbon ages for foraminifera shells [PDF]
Paleoceanography, 2006 The causes for discordant radiocarbon results on multiple species of planktonic foraminifera from high‐sedimentation‐rate marine sediments are investigated. We have documented two causes for these anomalous results. One is the addition of secondary radiocarbon for which we have, to date, only one firm example. It involves an opal‐rich sediment.
Broecker, Wallace +4 more
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Radiocarbon in dissolved organic carbon of the Atlantic Ocean
Geophysical Research Letters, 2016 Marine dissolved organic carbon (DOC) is produced in the surface ocean though its radiocarbon (14C) age in the deep ocean is thousands of years old. Here we show that ≥10% of the DOC in the deep North Atlantic is of postbomb origin and that the 14C age ...
E. R. M. Druffel +3 more
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Geochronological implications of 210Pb and 137Cs mobility in cave guano deposits
International Journal of Speleology, 2021 Some recent publications on the paleo- and historical environmental interpretation of bat guano sequences have relied on 210Pb and 137Cs distribution to establish age-depth models, even when these are at odds with radiocarbon models in the lower parts of
Donald McFarlane, Joyce Lundberg
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Errors in the radiocarbon dating of deposits in Finland from the time of deglaciation [PDF]
Bulletin of the Geological Society of Finland, 1974 Some radiocarbon dates of sediments from the area of the Salpausselkä moraines, and north of them in the area deglaciated after c. 10200 B.P., are too old and at variance with a number of radiocarbon dates for the regional pollen assemblage zones ...
J.J. Donner, H. Jungner
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