Evolution?

Radiometric Dating

Based on assumptions

Absolute dating methods determine how much time has passed since rocks formed by measuring the radioactive decay of isotopes
or the effects of radiation on the crystal structure of minerals.

A detailed survey of the following dating methods in actual use: K-Ar, Ar-Ar, Fission track, Rb-Sr, U-Pb, Pb-Pb, Sm-Nd, Re-Os, Lu-Hf, La-Ce, etc.
Addresses and refutes the common defensive statements used by proponents of the dating methods.
Special emphasis is on demonstrating that discrepant results are not the exception, but the rule,
and that arguments used to justify so-called good dates are, when closely examined, arbitrary and without foundation.

This book is logically not liked by evolutionists. But the reality of the day is that any method based on assumptions can never offer absolute results.
All radiometric dating methods rely upon important assumptions usually not mentioned by evolutionists...

Almost all of the different methods ... rely on these few basic assumptions:

- Beginning Conditions Known

- Beginning Ratio of Daughter to Parent Isotope Known (zero date problem)

- Constant Decay Rate

- No Leaching or Addition of Parent or Daughter Isotopes

- All Assumptions Valid for Billions of Years

- There is also a difficulty in measuring precisely very small amounts of the various isotopes

- Beginning Conditions Known

- Beginning Ratio of Daughter to Parent Isotope Known (zero date problem)

- Constant Decay Rate

- No Leaching or Addition of Parent or Daughter Isotopes

- All Assumptions Valid for Billions of Years

- There is also a difficulty in measuring precisely very small amounts of the various isotopes

Assumptions exclude certainty.

Absolute dates do not necessarily tell us precisely when a particular cultural event happened, but when taken as part of the overall
archaeological record they are invaluable in constructing a more specific sequence of events.

Despite very impressive and powerful measurement and characterization tools, physical and chemical analysis methods,
the dating of rocks by using radioactive elements depends on very basic assumptions. The significance and relevance of these assumptions have not been demonstrated.
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. Naturalisrts base this timescale on
evolution theory and naturalism.
So the so-called

*absolute*radiometric dating methods themselves are not*absolute*. It is a misleading term in this sense.
K-Ar dating

Potassium-Argon dating
is the only viable technique for dating very old archaeological materials.

The K-Ar method is probably the most widely used
radiometric dating technique available to geologists.

The K-Ar method
is used to date strata containing ash from volcanic eruptions.
It is regarded as the most reliable dating method available after radiocarbon dating.

What most people don't realize, or at least don't discuss, is that Ar/Ar method is not an absolute dating method.
Let me emphasize again that this dating method is a relative dating method.
In other words, it must be calibrated relative to a different dating method before it can be used to date materials relative to that other dating method.

In order for an age to be calculated by the 40Ar/39Ar technique, the J parameter must be known.
For the J to be determined, a standard of known age must be irradiated with the samples of unknown age.
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.
However, if these "known" ages are incorrect, then fission track dating that is based on these ages is also incorrect.
Thus fission track dating is not an independent test that helps to verify the accuracy of other tests.
The result is that radiometric dating in general is in danger of being based on
circular reasoning.

It seems like rocks dating within one or two million years cannot be accurately dated by K-Ar techniques just because of the relatively wide ranges of error.
However, can rocks that are tens or hundreds of millions of years be more accurately dated?
Perhaps, if these rocks were in fact closed systems and were not subject to contamination by external argon. ...
Investigators also have found that excess 40Ar is trapped in the minerals within lava flows. ...
Many recent studies confirm the mantle source of excess 40Ar.

The Potassium-Argon dating method has to be calibrated.
If it has to be calibrated, it can not be absolute. This goes for all dating methods.
Excess daughter isotope 40Ar leads to higher ages than is really the case.

Dating methods agree?

It is often said that a great many dating methods, used on a single specimen, will agree with each other, thus establishing the accuracy of the date given.
In reality, the overwhelming majority of measurements on the fossil bearing
geologic column are all done using one method, the K-Ar method.
Thus the agreement found between many dates does not necessarily reflect an agreement between different methods,
but rather the agreement of the K-Ar method with itself (Especially noting that
Dalrymple suggested that only K-Ar dating methods were at all trustworthy).
I have seen no good double-blinded research studies that say otherwise. One would think that if this were a good science,
then such studies would be done and published, but they are strangely lacking.

Apparently there are not many scientific researches into the reliability of different radiometric dating methods used for checking each other.

Paradigm paralysis

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?"
In general, the former is more likely, because there is such a vast amount of data behind the current understanding of the time scale...
However, this statistical likelihood is not assumed,
it is tested, usually by using other methods (e.g., other radiometric dating methods or other types of fossils), by re-examining the inconsistent
data in more detail, recollecting better quality samples, or running them in the lab again.

That current understanding of the geological time scale is the result of 200 years of
evolutionary bias,
circular reasoning and the blind acceptance of unprovable
uniformitarianism and
naturalism within the world of
mainstream science.

Worldview against worldview

David Plaisted - The Radiometric Dating Game

Tim Thompson - Kevin R. Henke: Comments on David Plaisted's "The Radiometric Dating Game" (Part 1)

David Plaisted - A Reply to Dr. Henke and Others

Tim Thompson - Kevin R. Henke: Comments on David Plaisted's "The Radiometric Dating Game" (Part 2)

David Plaisted - A Further Reply to Dr. Henke

Tim Thompson - Kevin R. Henke: Comments on David Plaisted's "The Radiometric Dating Game" (Part 3)

David Plaisted - Another Reply to Dr. Henke

David Plaisted - Reply Number 4 to Dr. Henke

Tim Thompson - Kevin R. Henke: Comments on David Plaisted's "The Radiometric Dating Game" (Part 1)

David Plaisted - A Reply to Dr. Henke and Others

Tim Thompson - Kevin R. Henke: Comments on David Plaisted's "The Radiometric Dating Game" (Part 2)

David Plaisted - A Further Reply to Dr. Henke

Tim Thompson - Kevin R. Henke: Comments on David Plaisted's "The Radiometric Dating Game" (Part 3)

David Plaisted - Another Reply to Dr. Henke

David Plaisted - Reply Number 4 to Dr. Henke

This is an interesting debate between a creationist and an evolutionist. Much depends on one's worldview because the assumptions made are based on it.

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?

Dan Stober - The strange case of solar flares and radioactive elements

Jenkins, Herminghuysen, Blue, Fischbach et al - Additional experimental evidence for a solar influence on nuclear decay rates

David Plaisted - Radioactive Decay Rates May Change

David Plaisted - More Bad News for Radiometric Dating

Conservapedia - Radiometric dating

Simon Kelley - K-Ar and Ar-Ar Dating

Science vs Evolution - Jean de Pontcharra: Are Radioactive-dating methods reliable?

Dan Stober - The strange case of solar flares and radioactive elements

Jenkins, Herminghuysen, Blue, Fischbach et al - Additional experimental evidence for a solar influence on nuclear decay rates

David Plaisted - Radioactive Decay Rates May Change

David Plaisted - More Bad News for Radiometric Dating

Conservapedia - Radiometric dating

absolutedating methods free of assumptions? Are they absolute or are they relative?