Radiometric dating zircon crystals
Radioactive elements are unstable; they breakdown spontaneously into more stable atoms over time, a process known as radioactive decay.
Radioactive decay occurs at a constant rate, specific to each radioactive isotope.
A commonly used radiometric dating technique relies on the breakdown of potassium (Ar in an igneous rock can tell us the amount of time that has passed since the rock crystallized.
If an igneous or other rock is metamorphosed, its radiometric clock is reset, and potassium-argon measurements can be used to tell the number of years that has passed since metamorphism.
Since the 1950s, geologists have used radioactive elements as natural "clocks" for determining numerical ages of certain types of rocks. "Forms" means the moment an igneous rock solidifies from magma, a sedimentary rock layer is deposited, or a rock heated by metamorphism cools off.
It's this resetting process that gives us the ability to date rocks that formed at different times in earth history.
Radiometric dating such as uranium/lead dating often dates the solidification of a rock at millions of years ago (and is based on sound premises).
Why would anyone claim that the Earth is 10,000 years old?
The only presupposition in play here is that radioactive decay rates in the past were as is measured in the present.Ã‚Â This is reasonable given that radioactive decay is a consequence of a fundamental force (the electroweak force) that must be the same universally if all matter and EM radiation is observed to behave in the same way (it is).
Radioactive decay is a very very very young part of science.
The only true studies of nuclear decay can only be attributed to Nuclear blast sites/Nuclear power plant disasters/Nuclear Waste control and how long they take to decacy/ no longer remain radioactive.
Radiometric dating such as uranium/lead dating often dates the solidification of a rock at millions of years ago (and is based on sound premises).Ã‚Â Why would anyone claim that the Earth is 10,000 years old?
Hi Walter K, This is an honest question which deserves an answer.