Closed system radiometric dating
This proves that the half-lives of the uranium and thorium radioactive decays vary ... any age determination using this method of dating will be inaccurate because it is based on an invalid assumption." " ... For example, discordant dates have been obtained on the same rocks by ...
To cross-check the results with one or more different methods of radiometric dating. I now believe that the claimed accuracy of radiometric dating methods is a result of a great misunderstanding of the data, and that the various methods hardly ever agree with each other, and often do not agree with the assumed ages of the rocks in which they are found. 479-480; Note: Though the age calculation (for sample No.For Uranium/Lead dating this means that some of the uranium that was initially present would be "leached" out of the rock.Leaching can also cause uranium to be leached into rocks that have little or no uranium in them.To do this they have selected a certain meteorite, which contained various types of lead (including lead 204, 206, 207 and 208) but no uranium, and they have assumed that this ratio is equivalent to the earth's original lead ratio.They did this because it is almost certain that these lead isotopes were all present in large quantities when the earth was created.Although these eruptions were less than 200 years old, the radiometric "dates" obtained from them were 140 million to 2.96 billion years for one, and from 0 to 29 million years for the other -- depending upon the (ocean) depth at which the lava sample was obtained. This also brings up an important question: If radiometric dating methods are unable to produce the correct date in cases where the actual date of eruption is known, why should we believe that these same methods can produce accurate dates when the date of eruption is unknown?
The point is simply this: radiometric dating is known to produce grossly erroneous dates when heat is involved in the formation or fossilization process.
And since the only rocks which yield ages in excess of 100,000 years are of volcanic origin, this method of dating the earth is not based on science, but rather speculation and subjective reasoning.
Unfortunately, the public is rarely informed of these facts. * "Allende" is the name given to the meteorite that was used to "date" the age of the earth. It is the site where the famous 1470 skull was found.
In other words, the magnitude of the radius of a pleochroic halo in a particular crystal depends on the half-life of the decay responsible for the alpha particle emission. the radii of pleochroic haloes corresponding to a definite decay in a particular mineral are ...
(the same) size, then it can be safely assumed that the half-life of that decay is a constant.
The only dating methods discussed (over and over) by evolution-believing scientists and the mass media are those that supposedly "prove" that the earth is billions of years old.