Talk:Samarium–neodymium dating

Accuracy and Valid Date Range?
One piece of information that is missing is the range of ages that this dating method is believed to be accurate for. Since the 1/2 life is on the order of 10^8, I imagine it will be pretty ancient, and also not be very accurate for "young" dates. --156.80.63.241 15:14, 27 April 2006 (UTC)