Creationists often criticize radiocarbon dating in the context of discussions of the age of the earth.
But, as is clear even from the very brief discussion in the previous paragraph, radiocarbon dating can say nothing one way or the other about whether the earth is many millions of years old, since such dates are far beyond this method's range of resolution.
The SUERC Radiocarbon Laboratory is involved in archaeological, forensic and environmental research, additionally using stable isotopes (13C and 15N) for dietary reconstruction.
As well as undertaking its own in-house and collaborative research, the SUERC Radiocarbon Laboratory also provides a radiocarbon dating service to national and international museums, universities and archaeology units.
"Every year the trees in our forests show the swing of Time's pendulum and put down a mark.
They are chronographs, recording clocks, by which the succeeding seasons are set down through definite imprints," he wrote in the pages of National Geographic.
When a plant or animal organism dies, however, the exchange of radiocarbon from the atmosphere and the biosphere stops, and the amount of radiocarbon gradually decreases, with a half-life of approximately 5730 years.
Dendrochronology and radiocarbon dating have intertwined histories, she explains, with roots firmly planted at the UA.
A 1929 edition of National Geographic boasts, "The Secret Of The Southwest Solved By Talkative Tree Rings." The 35-page article, penned in whimsical prose, was written by Andrew Douglass, the UA scientist who invented tree ring science. In addition to his work as an astronomer at the UA's Steward Observatory, Douglass was the first to discover that tree rings record time.
Carbon-dating Carbon dating, like other radiometric dating methods, requires certain assumptions that cannot be scientifically proved.
These include the starting conditions, the constancy of the rate of decay, and that no material has left or entered the sample.