Results 31 to 40 of about 1,980,444 (295)
UCLA Radiocarbon Dates VIII [PDF]
Radiocarbon, 1966 The measurements reported were made during the 2nd half of 1967 in the Isotope Lab. of the Inst. of Geophysics and Planetary Physics as a continuation of the UCLA date lists I through VII. Samples were analyzed as CO2-gas at close to one atm in a 7.5 L proportional counter with 3 energy channels described earlier.
Rainer Berger, W. F. Libby
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Radiocarbon Dating at Groningen: New and Updated Chemical Pretreatment Procedures
Radiocarbon: An International Journal of Cosmogenic Isotope Research, 2019 The Centre for Isotope Research (CIO) at the University of Groningen has operated a radiocarbon (14C) dating laboratory for almost 70 years. In 2017, the CIO received a major upgrade, which involved the relocation of the laboratory to new purpose-built ...
M. Dee +15 more
semanticscholar +1 more source
Use of three isotopes to calibrate human bone radiocarbon determinations from Kainapirina (SAC), Watom Island, Papua New Guinea [PDF]
, 2005 In archaeological dating, the greatest confidence is usually placed upon radiocarbon results of material that can be directly related to a defined archaeological event.
Green, Roger, Petchey, Fiona
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Tartu Radiocarbon Dates IV [PDF]
Radiocarbon, 1966 The following list includes C14 dates and deals with the results of the methodological investigations carried out at the Geobiochemical Laboratory of the Institute of Zoology and Botany of the Academy of Sciences of the Estonian SSR in 1967–1968.
J. M. Punning, E. Ilves, A. Liiva
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The New Zealand Kauri (Agathis Australis) Research Project: A Radiocarbon Dating Intercomparison of Younger Dryas Wood and Implications for IntCal13 [PDF]
, 2013 We describe here the New Zealand kauri (Agathis australis) Younger Dryas (YD) research project, which aims to undertake Δ14C analysis of ~140 decadal floating wood samples spanning the time interval ~13.1–11.7 kyr cal BP.
Turney, Chris S.M. +20 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
doaj +1 more source
Groningen Radiocarbon Dates IV [PDF]
Radiocarbon, 1963 An attempt has been made to assemble the large number of C14 dates measured in Groningen since the last date list was published in 1958. We have not succeeded in preparing all the measurements done in this time; the present list contains a more or less random selection. It is hoped the rest will be included in next year's list.
J. C. Vogel, H. T. Waterbolk
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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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Radiocarbon determinations from the Mulifanua Lapita site, Upolu, western Samoa [PDF]
, 2001 The Mulifanua ferry berth has the distinction of being the only site in Samoa with dentate-stamped Lapita wares, and is the most easterly Lapita site in the Pacific.
Petchey, Fiona, Petchey, Fiona J.
core +1 more source
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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