Results 1 to 10 of about 5,424,467 (257)

Direct radiocarbon dating and stable isotopes of the neandertal femur from Les Rochers-de-Villeneuve (Lussac-les-Châteaux, Vienne)

open access: yesBulletins et Mémoires de la Société d’Anthropologie de Paris, 2006
Direct radiocarbon dating of the Neandertal femoral diaphysis from the Rochers-de-Villeneuve (Lussac-les-Châteaux, Vienne) has yielded an age of 45,200 ± 1,100 14C years B.P. (OxA-15257) [48,455 ± 1,878 cal. years B.P.], and stable isotope values of δ13C
Cédric Beauval   +3 more
doaj   +1 more source

AMS Radiocarbon Dating of Large Za Baobabs (Adansonia za) of Madagascar. [PDF]

open access: yesPLoS ONE, 2016
The article reports the radiocarbon investigation of Anzapalivoro, the largest za baobab (Adansonia za) specimen of Madagascar and of another za, namely the Big cistern baobab. Several wood samples collected from the large inner cavity and from the outer
Adrian Patrut   +6 more
doaj   +1 more source

RADIOCARBON INVESTIGATION OF THE PEDUNCULATE OAK OF BOTOSANA, ROMANIA

open access: yesStudia 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   +8 more
doaj   +1 more source

Two-step movement of tsunami boulders unveiled by modified viscous remanent magnetization and radiocarbon dating

open access: yesScientific Reports, 2022
Massive boulders in landslide and tsunami deposits are prominent geomorphic features in various landscapes. Tracking their movement history is important for reconstructing past geologic dynamics; however, the reworking movements of massive boulders ...
Tetsuro Sato   +8 more
doaj   +1 more source

Errors in Radiocarbon Age Determination and Correction of Radiocarbon Dates

open access: yesThe Quaternary Research (Daiyonki-Kenkyu), 1967
The errors in radiocarbon age determination on the wood samples are estimated from the possible variations in the concentration of radiocarbon in the atmosphere. Recent results of measurements on the secular variation of the atmospheric 14C are presented and compared in order to find a general variation.
openaire   +2 more sources

Dating old hollow trees by applying a multistep tree-ring and radiocarbon procedure to trunk and exposed roots

open access: yesMethodsX, 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
doaj   +1 more source

NEW DATA ON JAANI STONE GRAVES AT VÄO, NORTHERN ESTONIA; pp. 110–137 [PDF]

open access: yesEesti Arheoloogiaajakiri, 2015
The article presents the results of osteological analysis and radiocarbon dating of the bones from Jaani stone grave(s) at Väo, excavated in 1982. The study of human bones revealed the remains of at least 38 individuals of various age groups.
Margot Laneman   +3 more
doaj   +1 more source

How Smooth Should Curves Be for Calibrating Radiocarbon Ages? [PDF]

open access: yesRadiocarbon, 1994
We show that smoothed versions of the high-resolution calibration curve should be used when 14C ages are calibrated with large (> ∼30 14C yr) measurement errors (represented by standard deviation δm) or are mixtures of elements of variable age (natural sample error with standard deviation δn).
Tornqvist, T. E., Bierkens, M. F.P.
openaire   +2 more sources

Spring buds of European woody plants have old 14C age

open access: yesHeliyon
Trees and shrubs maintain carbon reserves to support their functions during periods when metabolic demand exceeds carbon supply, such as during the dormant season.
Tamás Varga   +5 more
doaj   +1 more source

A complete database of AMS radiocarbon estimates from Lake Baikal sediment cores with a lake-wide assessment of TOC age offsets [PDF]

open access: yesEarth System Science Data
We present a database of AMS radiocarbon dates from Lake Baikal sediment cores, encompassing 51 cores and 518 dates, providing a complete record from literature spanning 1992 to 2025 (with transcription errors corrected) and including 22 previously ...
S. R. S. Newall   +3 more
doaj   +1 more source

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