Results 51 to 60 of about 1,980,444 (295)

Does Cedrela always form annual rings? Testing ring periodicity across South America using radiocarbon dating

Trees, 2017
Radiocarbon dating shows thatCedrelatrees from Bolivia, Ecuador and Venezuela form one ring per year butCedrelatrees from Suriname form two rings per year.
J. Baker, G. Santos, M. Gloor, R. Brienen   +3 more
semanticscholar   +1 more source

Discovery of annual growth in a modern olive branch based on carbon isotopes and implications for the Bronze Age volcanic eruption of Santorini

Scientific Reports, 2021
The volcanic eruption of Santorini in the Bronze Age left detectable debris across the Mediterranean, serving as an anchor in time for the region, synchronizing chronologies of different sites.
Yael Ehrlich, Lior Regev, Elisabetta Boaretto   +2 more
doaj   +1 more source

Florence Radiocarbon Dates I [PDF]

Radiocarbon, 1973
The Florence Radiocarbon Dating Laboratory was built in 1970 under the direction of Consiglio Nazionale delle Ricerche at the Istituto di Antropologia, Università di Firenze.
C. M. Azzi, L. Bigliocca, E. Piovan
openaire   +4 more sources

Towards a radiocarbon chronology of the Late-Glacial: Sample selection strategies [PDF]

, 2001
This paper outlines a dating program designed to test the reproducibility of radiocarbon dates on different materials of Late-Glacial age (plant macrofossils, fossil beetle remains, and the "humic" and "humin" chemical fractions of limnic sediments ...
Walker, M. J. C., Walker, M.J.C., Scott, E.M., Bryant, C., Harkness, D.D., Lowe, J. J., Lowe, J.J., Coope, G. R., Coope, G.R., Scott, E. M., Harkness, D. D.   +10 more
core   +1 more source

RADIOCARBON INVESTIGATION OF THE PEDUNCULATE OAK OF BOTOSANA, ROMANIA

Studia Universitatis Babes-Bolyai Chemia, 2018
The article discloses the AMS (accelerator mass spectrometry) radiocarbon dating results of the pedunculate oak of Botoşana. Four wood samples were extracted from its trunk.
Adrian PATRUT, Nicolae ROBU, Vasile SAVU, Roxana T. PATRUT, Laszlo RAKOSY, Ileana-Andreea RAŢIU, Daniel A. LOWY, Dragos MARGINEANU, Karl F. von REDEN   +8 more
doaj   +1 more source

Tartu Radiocarbon Dates XII [PDF]

Radiocarbon, 1976
IntroductionThis list includes dates of geological samples measured using a single-channel liquid scintillation 14C counter at the Geochemical and Statistical Laboratory, Tartu, Estonia. Our modern standard is made of benzene enriched in 14C, and its activity is checked with NBS oxalic acid standard sample.
openaire   +4 more sources

Tallinn Radiocarbon Dates I [PDF]

Radiocarbon, 1973
Preparations for determining absolute age by the radiocarbon method were started at the Institute of Geology, Academy of Sciences of the Estonian SSR in 1971. Dating of samples has been carried out since 1972.
J M Punning, T Kakum, R Rajamäe
openaire   +3 more sources

Selective Dating of Paint Components: Radiocarbon Dating of Lead White Pigment

Radiocarbon: An International Journal of Cosmogenic Isotope Research, 2018
Lead white is a man-made white pigment commonly used in works of art. In this study, the possibility of radiocarbon dating lead white pigments alone and in oil paints was explored using well-dated lead white pigments and paints.
Laura Hendriks, Irka Hajdas, E. Ferreira, N. Scherrer, Stefan Zumbühl, Markus Küffner, L. Carlyle, H. Synal, D. Günther   +8 more
semanticscholar   +1 more source

A label-free quantification method for assessing sex from modern and ancient bovine tooth enamel

Scientific Reports
Identification of the sex of modern, fossil and archaeological animal remains offers many insights into their demography, mortality profiles and domestication pathways.
Paula Kotli, David Morgenstern, Fanny Bocquentin, Hamoudi Khalaily, Liora Kolska Horwitz, Elisabetta Boaretto   +5 more
doaj   +1 more source

The beginnings of S-shaped temple rings in Bohemia from the perspective of archaeological analysis and radiocarbon dating

Archeologické Rozhledy
Jewellery represents important evidence not only for the reconstruction of fashion and cultural development but also provides significant support for the chronology of the periods studied.
Nikola Koštová, Kateřina Tomková, Naďa Profantová, Petr Limburský   +3 more
doaj   +1 more source