What is relative dating and radiometric dating
It is clear that the sedimentary rock was deposited and folded before the dyke was squeezed into place.By looking at other outcrops in the area, our geologist is able to draw a geological map which records how the rocks are related to each other in the field.
Stratigraphy uses the assumption that higher layers or strata were laid down after lower layers.
Ice core sampling normally uses the assumption that the ring bands observed represents years.
One known example where this assumption was used is very misleading.
Relative Dating Superposition: The most basic concept used in relative dating is the law of superposition.
Simply stated, each bed in a sequence of sedimentary rocks (or layered volcanic rocks) is younger than the bed below it and older than the bed above it.