Results 41 to 50 of about 66,356 (291)

RADIOCARBON DATING: PAST, PRESENT-DAY AND FUTURE - DEVELOPMENT OF I.P. GERASIMOV IDEAS

open access: yesБюллетень Почвенного института им. В.В. Докучаева, 2015
The ideas of I.P. Gerasimov on the radiocarbon soil age are outlined; the notions of absolute and relative soil age introduced by him are defined. Current trends in organic matter dating are discussed.
O. A. Chichagova, E. P. Zazovskaya
doaj   +1 more source

Revised calendar date for the Taupo eruption derived by ¹⁴C wiggle-matching using a New Zealand kauri ¹⁴C calibration data set [PDF]

open access: yes, 2011
Taupo volcano in central North Island, New Zealand, is the most frequently active and productive rhyolite volcano on Earth. Its latest explosive activity about 1800 years ago generated the spectacular Taupo eruption, the most violent eruption known in ...
Boswijk, Gretel   +4 more
core   +2 more sources

Tartu Radiocarbon Dates XII [PDF]

open access: yesRadiocarbon, 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

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

Radiocarbon dating and its applications in Quaternary studies [PDF]

open access: yesEiszeitalter und Gegenwart, 2008
This paper gives an overview of the origin of 14C, the global carbon cycle, anthropogenic impacts on the atmospheric 14C content and the background of the radiocarbon dating method.
I. Hajdas
doaj   +1 more source

Estimating marine reservoir effects in archaeological chronologies: Comparing ΔR calculations in Prince Rupert Harbour, British Columbia, Canada [PDF]

open access: yes, 2018
The best method for quantifying the marine reservoir effect (MRE) using the global IntCal Marine13 calibration curve remains unresolved. Archaeologists frequently quantify uncertainty on MRE values as errors computed from single pairs of ...
Ames, Kenneth M.   +7 more
core   +1 more source

Ucr Radiocarbon Dates I [PDF]

open access: yesRadiocarbon, 1974
A radiocarbon facility has been installed at the University of California, Riverside (UCR) to support interdisciplinary studies including archaeologic, archaeometric, geophysical, and geologic research. The laboratory was built between 1970 and 1973. Initially, a sample pretreatment and combustion system designed for a proportional CO2 counting system ...
openaire   +3 more sources

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

open access: yesScientific 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   +2 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

Crystallinity assessment of anthropogenic calcites using Raman micro-spectroscopy

open access: yesScientific Reports, 2023
Anthropogenic calcite is a form of calcium carbonate produced through pyrotechnological activities, and it is the main component of materials such as lime binders and wood ash.
Michael B. Toffolo   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy