Carbon Dating Gets a Reset

The Carbon 14 Myth

Until now, carbon dating was accurate only to about 13, years, or the ages of the oldest trees. The Science article is fairly dense, but Science has provided a helpful Perspectiveand Popular Science has a nice article as well. It turns out that the concentration of 14 C in the atmosphere varies from year to year, so calculations of the age of a specimen need to be corrected for this yearly variation; uncorrected calculations are not wrong, but they may be in error by hundreds of years.

Until now, we have had no detailed record of the 14 C concentration beyond the age of the oldest trees. Now, however, a team led by Christopher Bronk Ramsey of the University of Oxford has examined sediments in a Japanese bebo dating site and extended carbon dating to approximately 50, years. The lake was chosen because the bed of the lake is anoxic and its sediments are thought to have been stable and untouched by ice-age glaciers.

The new calibration will be significant to archeology and studies carbon dating past 50000 years climate change. Read the 2 articles I have cited for more detail. Not an earthshaking discovery, to be carbon dating past 50000 years, but it shows how science progresses, step-by-step, while creationism merely stagnates. Carbon dating to 50, years By Matt Young. October 21,

How Do We Know How Old Everything Is?