Dating artifacts (Young earth vs old earth)

Googling around on this particular artifact indicates that she's from about 23,000 BC, based on stratigraphic position in the artifact-rich area where she was found. I can't find anything that says for sure how that date was arrived at, but it almost has to be tied to carbon-14 dates. It's too old for tree rings, and I doubt that there are any clay hearths in the area to measure remnant magnetism.

Some of the very earliest carbon 14 work ever done - early 1950's or maybe even the 40's - was on Egyptian artifacts of known age. They came out quite close, even with the very crude methods available back then. I don't remember where I read this, though.Much more recently, argon-argon dating was used on ash from Pompeii and came up with 1925 +/- 94 years for an age that history said was 1918 years. Close, yes? That one is Renne, et al. Science, vol 277 pp 1279-1280 (1997) - it's online at Science | AAAS if you register and then hunt it down in their index.