I've had 3 "sub-samples" of a sediment core analyzed to ascertain the 10Be concentration levels. The sediment was taken from a closed basin - centripetal drainage pattern. The results indicate that I have a trend from top to bottom, but no age range was offered to me from the lab who ran the analysis. I've been looking for papers regarding this dating method, but I'm hoping that someone on this website maybe able to narrow down my search scope. If you need further information from me - please let me know.