Absolute Age. Finding a rock’s birthday. Absolute Age?. Give an example of an absolute age of a rock layer…. That rock layer is 200 million years old. Remember, absolute age is the exact age of a rock layer. Absolute Age.
Finding a rock’s birthday
Can you think of some things that could be called matter?
You Me Books Air
Water Rocks Cars Hair
There are over 110 ways that atoms can look
A type of matter made up of one or more of the same atoms.
This is called
New element extrusion?
Radioactive elementThe make-up of the intrusion or extrusion changes.
The intrusion or extrusion’s make-up has changed because of this decay. We will soon see that we can determine the exact time it was born by seeing how much of each of the elements is left.
As time goes by, the red element decays and becomes the blue element.
1.3 billion years
ArgonPotassium – Argon Dating
Radioactive Dating would say these rock particles are 50 million years old
Radioactive Dating would say these rock particles are 100 million years oldWhy not Sedimentary Rocks?
Do you see the problem???
Let’s say this Sedimentary rock is actually 20 million years old.
We can date the intrusion and extrusion and use their absolute ages to tell about how old the other layers are.