Results 21 to 30 of about 6,637 (213)
The organic matter of the buried peat soils on bely island (kara sea)
Бюллетень Почвенного института им. В.В. Докучаева, 2016 The organic matter composition of buried peat horizons from the west coast of White lake (Kara Sea) was investigated using the method of dency-metric fractionation.
Z. S. Artemyeva +3 more
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Scientia Agricola, 1994 The age of a large Brazil-nut tree (Bertholletia excelsa) is measured by radiocarbon dating, and a discussion is made about their importance in the Amazon rain-forest ecosystem.A idade de uma castanheira (Bertholletia excelsa) grande é medida por datação
P.B. de Camargo +3 more
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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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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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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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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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New Zealand radiocarbon age measurements—5 [PDF]
New Zealand Journal of Geology and Geophysics, 1962 A tabulated list of 117 samples dated by the radiocarbon method is given. Proportional counting of carbon dioxide gas was the method used, and the ages were calculated in terms of a half life of 5568 plus or minus 30 yr. Samples from Antarctica and the deep ocean are excluded.
T. L. Grant-Taylor, T. A. Rafter
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INTCAL98 Radiocarbon Age Calibration, 24,000–0 cal BP [PDF]
Radiocarbon, 1998 The focus of this paper is the conversion of radiocarbon ages to calibrated (cal) ages for the interval 24,000–0 cal BP (Before Present, 0 cal BP = AD 1950), based upon a sample set of dendrochronologically dated tree rings, uranium-thorium dated corals, and varve-counted marine sediment.
Stuiver, Minze +9 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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