Results 51 to 60 of about 54,846 (279)

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

STONE-CIST GRAVE AT KASEKÜLA, WESTERN ESTONIA IN THE LIGHT OF AMS DATES OF THE HUMAN BONES; pp. 91–117 [PDF]

open access: yesEesti Arheoloogiaajakiri, 2012
The article discusses new AMS dates of the human bones at stone-cist grave I at Kaseküla, western Estonia, in the context of previously existent radiocarbon dates, artefact finds and osteological studies. There are altogether 12 radiocarbon dates for 10
Margot Laneman
doaj   +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

Testing the human factor: Radiocarbon dating the first peoples of the South Pacific [PDF]

open access: yes, 2010
Archaeologists have long debated the origins and mode of dispersal of the immediate predecessors of all Polynesians and many populations in Island Melanesia.
Anderson, Kathy   +6 more
core   +2 more sources

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

Calibrating Radiocarbon Dates with R

open access: yesThe Programming Historian
After reviewing the basic principles and challenges of radiocarbon dating, this lesson teaches you how to use the R programming language to calibrate a set of dates, and then explore and present your results.
Nicolas Frerebeau, Brice Lebrun
doaj   +1 more source

Freshwater reservoir offsets on radiocarbon-dated dog bone from the headwaters of the St. Lawrence River, USA [PDF]

open access: yesPeerJ, 2019
Isotopic analysis of dog (Canis lupus familiaris) bone recovered from archaeological sites as proxies for human bone is becoming common in North America. Chronological placement of the dogs is often determined through radiocarbon dating of dog bone.
John P. Hart   +3 more
doaj   +2 more sources

Pattern of extinction of the woolly mammoth in Beringia. [PDF]

open access: yes, 2012
Extinction of the woolly mammoth in Beringia has long been subject to research and speculation. Here we use a new geo-referenced database of radiocarbon-dated evidence to show that mammoths were abundant in the open-habitat of Marine Isotope Stage 3 (∼45-
Beilman, DW   +7 more
core   +1 more source

New Radiocarbon Dates from East Texas Caddo Sites [PDF]

open access: yes, 2013
In this article, we report on new radiocarbon dates obtained from five Caddo sites in East Texas. The radiocarbon samples are charred organic remains scraped off of one surface of whole vessels or sherds. These samples are from the Johns (41CP12), Shelby
Perttula, Timothy K.   +1 more
core   +1 more source

Exploring site formation and building local contexts through wiggle-match radiocarbon dating: re-dating of the Firth of Clyde Crannogs, Scotland [PDF]

open access: yes, 2017
There are at least four wooden intertidal platforms, also known as marine crannogs, in the Firth of Clyde, on the west coast of Scotland. The interpretation of these sites partly depends on their dating and, if coeval, they could point to the presence of
Cook, Gordon   +3 more
core   +1 more source

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