Results 41 to 50 of about 5,424,467 (257)
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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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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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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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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The Anatomical Record, EarlyView.Abstract The human mandibular symphysis concentrates multiaxial loads during function and remodels throughout growth, but the precise mechanisms underlying cortical bone shape during growth remain relatively unexplored. Approaches based solely on thickness or external cortical contours provide only partial insights and do not capture the functional ...
Ana Ribeiro +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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The fossil record stays silent: Confusions and conundrums for hominin pelvis evolution
The Anatomical Record, EarlyView.Abstract The evolution of the hominin pelvis is commonly modeled as a series of stages driven largely by the requirements of bipedal locomotion, reproduction, thermoregulation, and pelvic floor muscular support. These patterns are complicated by variation in canal dimensions in relationship with different changes in overall pelvic breadths. To quantify
Helen K. Kurki, Cara M. Wall‐Scheffler
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Bayesian evaluation of the southern hemisphere radiocarbon offset during the holocene [PDF]
, 2009 While an interhemispheric offset in atmospheric radiocarbon levels from AD 1950–950 is now well established, its existence earlier in the Holocene is less clear, with some studies reporting globally uniform 14C levels while others finding Southern ...
Turney, Chris S.M. +8 more
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