If the half life of C is 5780 years why does C exist today on earth? Why is C generally not used for dating in
geology ?
What is used for dating rocks and events in geology?
New radioactive carbon is incorporated into living things all the time (through respiration). When you die, no more radioactive carbon is incorporated, and the radioactive carbon that was in you when you died starts to decay. That’s how scientists can tell how long ago you died. Only things that were previously living can be dated by carbon dating.
Dating Fossils and Rocks-Evidence for a young Earth?