Journal ArticleDOI
Radiocarbon dating of marine shells, including a discussion of apparent age of Recent shells from Norway
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In this paper, the authors concluded that shell dates are reliable when handled carefully and gave apparent ages from 340±75 to 550±80 years, indicating that apparent age is not a significant problem in dating of Norwegian shells.Abstract:
General problems in determining and interpreting shell C14 dates are discussed: calculation methods, factors influencing primary activity (apparent age), and determination of contamination. It is concluded that shell dates are reliable when handled carefully. Measurements on ten shells, collected between 1898 and 1923 on the Norwegian coast, gave apparent ages from 340±75 to 550±80 years, indicating that apparent age is not a significant problem in dating of Norwegian shells.read more
Citations
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Journal ArticleDOI
Quaternary stratigraphy of Norden, a proposal for terminology and classification
TL;DR: In this paper, a proposal for a common chronostratigraphical classification of the Quaternary in Norden (and partly continental NW Europe) is made, based on the sequence of glacials/interglacials.
Journal ArticleDOI
The last Eurasian ice sheets - a chronological database and time-slice reconstruction, DATED-1
TL;DR: In this paper, the authors present a new time-slice reconstruction of the Eurasian ice sheets (British-Irish, Svalbard-Barents-Kara Seas and Scandinavian) documenting the spatial evolution of these interconnected ice sheets every 1000 years from 25 to 10 years and at four selected time periods back to 40 years.
Journal ArticleDOI
Radiocarbon age calibration of marine samples back to 9000 cal yr BP.
TL;DR: In a special issue of R adiocarbon, Stuiver et al. as discussed by the authors presented a set of calibration curves for the age conversion of wood samples that were formed through use of atmospheric CO2.
Journal ArticleDOI
Apparent radiocarbon ages of recent marine shells from Norway, Spitsbergen, and Arctic Canada
Jan Mangerud,Steinar Gulliksen +1 more
TL;DR: The mean apparent radiocarbon ages of marine shells, colleted alive before the initiation of atomic bomb testing, and also before the main input of dead carbon derived from fossil fuels, are found to be 440 yr for the coast of Norway, 510 yr for Spitsbergen, and 750 yr for Ellesmere Island, Arctic Canada as discussed by the authors.
Journal ArticleDOI
Radiocarbon Reservoir Ages In The Mediterranean Sea And Black Sea
Giuseppe Siani,Martine Paterne,Maurice Arnold,Edouard Bard,Bernard Métivier,Nadine Tisnerat,Franck Bassinot +6 more
TL;DR: In this paper, the authors measured apparent marine radiocarbon ages for the Mediterranean Sea, Black Sea, and Red Sea by accel- erator mass spectrometry radioccarbon analyses of 26 modern, pre-bomb mollusk shells collected living between AD 1837 and 1950.
References
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Journal ArticleDOI
Isotopic standards for carbon and oxygen and correction factors for mass-spectrometric analysis of carbon dioxide
TL;DR: In this paper, Niee's and Solenhofen standards were compared to the Chicago PDB standard for carbon and oxygen isotope ratios, and the correction factors for instrumental effects and for the nature of the mass spectra were derived.
Journal ArticleDOI
Carbon isotope fractionation during the precipitation of calcium carbonate
K. Emrich,D.H. Ehhalt,J.C. Vogel +2 more
TL;DR: In this paper, the carbon isotopes 12C and 13C in the equilibrium system CO2 (gas)-HCO3−(dissolved- CaCO3 (solid) has been measured at temperatures between 20°C and 60°C.
Journal ArticleDOI
Carbon 13 in Plants and the Relationships between Carbon 13 and Carbon 14 Variations in Nature
TL;DR: In this article, the mechanism of isotopic fractionation in plants is discussed, in an attempt to evaluate the relative effects of the local environment and of the activities of the plants themselves.
Journal ArticleDOI
Yale natural radiocarbon measurements IX.
TL;DR: As in the previous lists, dates are reported in terms of the Libby half life of C14, 5570 ± 30 yr, and geochemical measurements are expressed as ∆, the normalized deviation from 95 percent of the NBS oxalic-acid standard.
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