Relative dating techniques include
As an example of how they are used, radiometric dates from geologically simple, fossiliferous Cretaceous rocks in western North America are compared to the geological time scale.
To get to that point, there is also a historical discussion and description of non-radiometric dating methods.
Another way that precise dating can be achieved is if the artist records the actual date of his or her creation, the name of a leader of known reign, or a distinctive historical event, like the inscription shown in the previous chapter about King Yousif Assar Yathar’s invasion of the Najran region in 518 CE.
Then, however, it must be clear that the artist is referring to his or her own time, and not providing historical commentary.
The most obvious feature of sedimentary rock is its layering.
Stratigraphy, or the scientific study of rock layers, includes relative dating.
Geology, or the study of rocks, can be a fascinating way to learn about the Earth's history.