Radiometric dating assumptions

Henke: Comments on David Plaisted's "The Radiometric Dating Game" (Part 1) David Plaisted - A Reply to Dr. Henke: Comments on David Plaisted's "The Radiometric Dating Game" (Part 2) David Plaisted - A Further Reply to Dr. Henke: Comments on David Plaisted's "The Radiometric Dating Game" (Part 3) David Plaisted - Another Reply to Dr. Henke John Woodmorappe - Mythology of Modern Dating Methods Simon Kelley - K-Ar and Ar-Ar Dating Science vs Evolution - Jean de Pontcharra: Are Radioactive-dating methods reliable?

One would think that if this were a good science, then such studies would be done and published, but they are strangely lacking.

If an inconsistent data point is found, geologists ask the question: "Is this date wrong, or is it saying the current geological time scale is wrong?

Naturalisrts base this timescale on evolution theory and naturalism.

So the so-called absolute radiometric dating methods themselves are not absolute. What most people don't realize, or at least don't discuss, is that Ar/Ar method is not an absolute dating method.

In fact, the first radiochronology assumptions were adapted to fit the stratigraphic scale used by geochronologists of the end of the 19th century.

Radiometric dating methods are calibrated against the geologic column which is a relative timescale.

However, it is based on several basic assumptions which have led to incorrect dates. To keep it very simple: Each chemical element, such as potassium and uranium, is made up of atoms.

Some variations of the elements, such as potassium-40 and uranium-238, are unstable and, over time, will decay into another element.

Because this (primary) standard ultimately cannot be determined by 40Ar/39Ar, it must be first determined by another isotopic dating method. while it is often easy to determine the age of the primary standard by the K/Ar method, it is difficult for different dating laboratories to agree on the final age.

Fission track dating is calibrated (the "zeta calibration") using rocks of "known" ages.

The Potassium-Argon dating method has to be calibrated.

Tags: , ,