Relative dating diagram
Diagram 3 shows that organic material from the latest assemblage at site 3 has been dated by 14C (radiocarbon) to 1500 BC which is an absolute date.
Now the sequences at all three sites can be compared with assemblages of a similar date in other regions, all over the world.
We talked about relative dating of rocks and how scientists use stratigraphic succession to compare the ages of different rock layers.
But sometimes, a scientist finds a couple of rock outcrops that are separated by a wide distance.
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We have a good sense of the order in which things happened to us (when we were children, students, adults), that is, a relative sequence of events.
We can also handle parallel relative sequences (e.g.