So my impression is that its not really a new dating technique as such where finds have some sort of analysis done on them to produce a date. The researchers have looked high and low for all the possible dates they can find from a variety of sources.
Inputed all the dates along with the co-ordinates of where things were found into the computer, then done a bit of filtering and statistical analysis before plotting the data onto the map and drawing lines between dates of the same value, which has produced contour lines which indicates spreading of particular categories of datable evidence.
Something is not right. This message is just to keep things from messing up down the road