resistance is futile, you will be assimilated

[BrianSoddingBoru4]

It kinda does. That the reason in fact, it’s called ‘closure temperature’.

Boru

it refers to isotopes moving out of the mineral, not to decay of the isotopes

In geology, closure temperature (also known as blocking temperature) refers to the temperature at which a mineral or rock system becomes a closed system, meaning the diffusion of radioactive decay products or isotopes is no longer significant.

Now, be a good boy and look up ‘diffusion’.

Boru