Radiometric dating and creation science
Most young earth creationists reject all of these points.
As a scientific skeptics, we ask ourselves: is this really the case?
So far from rejecting samples because they do not fit a preconceived notion of what the age be, scientists reject samples because there is ample evidence that it has been disturbed: the data points do not lie on the isochron lines.
Scientists do not assume that rocks have been closed systems; it is a well-supported conclusion from experiments.
But what about assuming that initial amounts are known? Radiometric dating and initial conditions A second property of isochron diagrams is that it actually gives the initial amount of daughter isotope as a result of the method. At this intersect, the ratio of parent/(another stable isotope of the same element as the daughter) is by definition 0 and so no amount of the daughter here is produced by decay of the parent in the rock.
The initial conditions are just read off the graph; it is not just assumed. Radiometric dating and decay rates In a last ditch effort, young earth creationists exclaim that scientists just assume, without warrant, that decay rate are constant. Decay rates have been shown to be constant, despite very high pressure and temperature.
Any such change would affect different forms of decay differently, yet this has not been observed.
As a final blow to the already nailed shut coffin of young earth creationism, had decay rates been high enough to be consistent with a young earth, the heat alone would have melt the earth. Conclusion Scientists do not assume that rocks have been closed systems, but they test for it.
Data is plotted on a simple two dimensional graph; the parent isotope on the x-axis and the daughter isotope on the y-axis.A very important tool in radiometric dating is the so called isochron diagram and it holds the key to refuting the central creationist claims about radiometric dating.One of the most beneficial things about it is that it can check itself for accuracy; the method tells you how well the rocks have been closed systems.But what happens when the rocks have been disturbed?
If a rock is heated during its lifetime, the system gets disturbed and some of the parent and/or daughter isotopes may move in or out of the rock.If so, the data will fall on an isochron line, but will be all over the place.