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Geologist in the 1800s worked out 7 basic principles of stratigraphy that allowed them, and now us, to work out the relative ages of rocks.
With this in mind geologist have long known that the deeper a sedimentary rock layer is the older it is, but how old?
Although there might be some mineral differences due to the difference in source rock, most sedimentary rock deposited year after year look very similar to one another.
There are many schools of thought regarding the effect that the RAE has on a sport and the development of players.
The one that is most frequently adhered to is the bias towards providing relatively older players (who can have up to 11 months more physical and mental development than some of their team mates) with more opportunities to succeed in the sport.