Cosmogenic nuclide dating wiki
King Clone's age is not precise to a given year, as it wasn't dated by dendrochronology proper (counting rings).
Instead, KC was dated by applying known patterns of plant growth to a single organism that self-reproduces by "cloning".
These materials contain electrons that have been released from their atoms by ambient radiation, but have become trapped by imperfections in the mineral's structure.
When one of these minerals is heated, the trapped electrons are discharged and produce light, and that light can be measured and compared with the level of surrounding radiation to establish the amount of time that has passed since the material was last heated (and its trapped electrons were last released).
When the sample is freshly burned, there will be no oxidizable carbon because it has been removed by the combustion process.
Over time this will change and the amount of organic carbon will decrease to be replaced by oxidizable carbon at a linear rate.
Moreover, these dating methods are not mutually exclusive: where their range, accuracy, and applicability overlap, the dates they produce agree with each other.
All of this evidence supports deep time: the idea, considered credible by scientists since the early 1800s, that the Earth (and the Universe) is millions These limits usually take the form: "Because we observe [X], which occurs at rate [Y], the universe must be at least [Z] years old".
There are three standard creationist responses: First, creationists assert that current rates (Y) are different than past rates.