Results 31 to 40 of about 7,054 (245)
Bern Radiocarbon Dates V [PDF]
Radiocarbon, 1965 This list includes about half of the samples measured during the last year. Many studies need further investigation and the results will be published later when additional information will make better interpretations possible.The equipment and the technique is essentially the same as described earlier (Bern IV).Reliable results on CO2 samples extracted
H. Oeschger, T. Riesen
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Scientific Reports, 2021 Plants have difficulty absorbing phosphorus from volcanic ash soils owing to the adsorption of phosphorus by aluminum and iron in the soils. Thus, on volcanic ash soils, the phosphorus source for natural vegetation is expected to be organic matter ...
Sae Katayama +2 more
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Copenhagen Radiocarbon Dates VI [PDF]
Radiocarbon, 1960 The following list comprises a selected number of measurements made up to November 1963. Age calculations are based on a contemporary value equal to 95% of the activity of the NBS oxalic-acid standard, and on a half life for C14of 5570 ± 30 yr.Results are expressed in years before 1950 and in the b.c.-a.d. scales.
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Łódź Radiocarbon Dates III [PDF]
Radiocarbon, 1984 The results presented in this list were obtained from 1986 to 1989. Equipment, measurement and treatment of samples are as reported previously (Kanwiszer & Trzeciak 1984: 111). Age calculations are based on a contemporary value equal to 95% of the activity of NBS oxalic acid standard and on the conventional half-life for 14C of 5568 ± 30 years ...
Andrzej Kanwiszer, Paweł Trzeciak
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RADIOCARBON DATING: PAST, PRESENT-DAY AND FUTURE - DEVELOPMENT OF I.P. GERASIMOV IDEAS
Бюллетень Почвенного института им. В.В. Докучаева, 2015 The ideas of I.P. Gerasimov on the radiocarbon soil age are outlined; the notions of absolute and relative soil age introduced by him are defined. Current trends in organic matter dating are discussed.
O. A. Chichagova, E. P. Zazovskaya
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UCLA Radiocarbon Dates I [PDF]
Radiocarbon, 1962 The measurements reported in this list have been made since the Radiocarbon Dating Laboratory at the Institute of Geophysics, UCLA became operational in August 1961. CO2proportional counting was used for all measurements in an 7 · 5-L counter at 1 atm pressure.
G. J. Fergusson, W. F. Libby
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Radiocarbon Dating of Holocene Archaeological Sites in the Far Northeast of Europe
Documenta Praehistorica, 2021 The paper is devoted to the critical analysis of the radiocarbon dating results of Mesolithic, Neolithic and Chalcolithic complexes of the northeastern part of the East European Plain (Republic of Komi, Arkhangelsk and Vologda Regions and the Nenets ...
Victor N. Karmanov +1 more
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Radiocarbon Dating of Bone [PDF]
Nature, 1967 SELLSTEDT et al.1 have described a method for the removal of inorganic carbonates from bone so that the residual collagen can be used as a source material for radiocarbon dating, and they conclude that this “offers the archaeologist an elegant and versatile tool which is likely to find wide application”.
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Radiocarbon dating and its applications in Quaternary studies [PDF]
Eiszeitalter und Gegenwart, 2008 This paper gives an overview of the origin of 14C, the global carbon cycle, anthropogenic impacts on the atmospheric 14C content and the background of the radiocarbon dating method.
I. Hajdas
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MethodsX, 2018 In the process of dating the oldest trees, which are often hollow, we developed a new method that combines tree-ring cross dating and wiggle matching radiocarbon techniques on wood samples extracted from the stem and from exposed roots. The method can be
Gianluca Piovesan +5 more
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