Which types of rock are used in radiometric dating
The phenomenon we know as heat is simply the jiggling around of atoms and their components, so in principle a high enough temperature could cause the components of the core to break out.However, the temperature required to do this is in in the millions of degrees, so this cannot be achieved by any natural process that we know about.Radiometric dating requires that the decay rates of the isotopes involved be accurately known, and that there is confidence that these decay rates are constant. The physical constants (nucleon masses, fine structure constant) involved in radioactive decay are well characterized, and the processes are well understood.Careful astronomical observations show that the constants have not changed significantly in billions of years—spectral lines from distant galaxies would have shifted perceptibly if these constants had changed.This is an example of the Weak force, and is fairly rare.Electron capture requires that there be an electron in the vicinity of the nucleus, so its activity depends strongly on the configuration of the electron cloud, which depends on the chemical state.
There is another effect that takes place in the "electron capture" type of Beta decay.Historically, these are also known as alpha, gamma, and beta decays, respectively."Atomic decays" are due to proton or neutron decays: either weakly, incrementing up or down the table of elements; or strongly, often splitting into smaller elements, one of which is often helium.That is, the analysis of the isotopic and chemical composition of the sample has far greater uncertainty than any uncertainty in the decay rate itself.The major reason that decay rates can change is that the electric field, from the atom's electron cloud, can change due to chemical changes.