Results 21 to 30 of about 112,190 (278)
Radiocarbon, Ltd. Natural Radiocarbon Measurements I [PDF]
Radiocarbon, 1971 Radiocarbon, Ltd. is a privately owned laboratory designed to provide quality service to the archaeologic and geologic communities. Operations began in 1969 using standard techniques for preparation, conversion to CO2, and purification of samples prior to counting.
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Methodological approaches to determining the marine radiocarbon reservoir effect [PDF]
, 2005 The marine radiocarbon reservoir effect is an offset in 14C age between contemporaneous organisms from the terrestrial environment and organisms that derive their carbon from the marine environment.
Albero, M. C. +42 more
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Should archaeologists care about 14C inter-comparisons? Why? A summary report on SIRI [PDF]
, 2017 Radiocarbon (14C) dating is used widely in many projects as a basis for the creation and testing of chronological constructs. 14C measurements are by their nature complex and the degree of sample pretreatment varies considerably depending on the material.
Cook, G.T., Naysmith, P., Scott, E.M.
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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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Documenta Praehistorica, 2008 This paper proposes an association between climate forcing connected with the 8200 calBP ‘climate event’ and a postulated phase of internecine warfare and population collapse at Late Neolithic/Early Chalcolithic sites in Pisidia, southwestern Turkey.
Lee Clare +3 more
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Rhodesian Radiocarbon Measurements III [PDF]
Radiocarbon, 1966 The following list of dates has been obtained since the compilation of List II in December 1965. Procedures of measurement are essentially unchanged from those reported previously (SR I and SR II).
J. G. Sheppard, E. R. Swart
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Geophysical Research Letters, 2020 Detailed organic geochemical and carbon isotopic (δ13C and Δ14C) analyses are performed on permafrost deposits affected by coastal erosion (Herschel Island, Canadian Beaufort Sea) and adjacent marine sediments (Herschel Basin) to understand the fate of ...
H. Grotheer +9 more
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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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Geochemistry, Geophysics, Geosystems, 2023 In the past century, most eruptions of Steamboat Geyser in Yellowstone National Park's Norris Geyser Basin were mainly clustered in three episodes: 1961–1969, 1982–1984, and ongoing since 2018. These eruptive episodes resulted in extensive disturbance to
Shaul Hurwitz +7 more
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AMS radiocarbon dating from the Neolithic of eastern Ukraine casts doubts on existing chronologies [PDF]
, 2015 The Seversky Donets River (Northern Donets) basin in eastern Ukraine and the Lower Don River valley in Russia were inhabited by populations that have been considered to be one of the earliest pottery-using cultures in Europe.
Lillie, Malcolm +2 more
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