Using relative dating what can geologists determine
Suppose you find a fossil at one place that cannot be dated using absolute methods.That fossil species may have been dated somewhere else, so you can match them and say that your fossil has a similar age.The lowest layer of rock or of a structure would be known as the oldest.The highest layer is then known as the newest/youngest.
The activity offers literacy opportunities as well as practice using the science capability 'Interpret representations'.
It is difficult to determine the absolute age of a sedimentary rock because sedimentary rocks are made up of diverse particles that are all different ages.
As a result radioactive dating can only determine the age of the particles, not the whole rock.
Different isotopic elements-such as uranium, rubidium, argon, and carbon-have varying (but constant) rates of radioactive decay.
This constancy provides a "radiometric clock," allowing scientists to analyze rock samples…