Volcano carbon dating
Radioactive elements were incorporated into the Earth when the Solar System formed.All rocks and minerals contain tiny amounts of these radioactive elements.The water level just sits there even though the hose is going full blast.(The barrel is made deep enough so that we don't have to worry about water overflowing the rim.) Henry Morris argued that if we started filling up our empty barrel it would take 30,000 years to reach the equilibrium point.
It's this resetting process that gives us the ability to date rocks that formed at different times in earth history.The water leaking out the sides of the barrel represents the loss (mainly by radioactive decay) of the atmosphere's supply of carbon-14.Now, the fuller that barrel gets the more water is going to leak out the thoroughly perforated sides, just as more carbon-14 will decay if you have more of it around.Carbon-14 is a method used for young (less than 50,000 year old) sedimentary rocks.This method relies on the uptake of a naturally occurring radioactive isotope of carbon, carbon-14 by all living things.