Indicator 1: Radiometric dating involves circular reasoning: This technique gives meaningless results.
Scientists who measure the age of rocks generally ask in advance what the age of the rocks is expected to be.
The first method of measurement (X axis) employs radiometric dating of rocks (that are millions of years old) to calculate the average rate of plate motion over that time.
The second method measures the rate of plate motion based on GPS readings of the precise locations of the plates (Y axis).
Let us critically examine each of these claims and see if they hold up against the science.
While doing so, we will have to learn about how radiometric dating works.
Therefore, in my opinion, one of three things should be done: (1) rewrite the section so as not to appear as overtly off-topic; (2) move those other techniques to their proper places and place a link in "See also" section; or (3) rename the article to reflect a more general topic such as "Dating techniques" or the like. But don't other radiological sources have an effect? the atomic fallout from a meteorite or a supernova in a nearby star system. Example some part is 20000 years old and other is 35000 years in same animal.
It seems such events could trigger substantial 'non-spontaneous' decay that would cause is discontinuity in the typical half-life curve and set dates off by an order of magnitude. Shortopinions , 29 March 2007 (UTC) Living things have been dated over 2500 years old. Posted unsigned, at , on April 22, 2007 by User:184.108.40.206 (Talk) (5,028 bytes).
These are ratios used in isotope dating of mantle plumes: "Popular with plume enthusiasts is the ratio of helium-3 to helium-4.
A higher ratio is characteristic of deep mantle origin, they argue.
Most young earth creationists reject all of these points.
As a scientific skeptics, we ask ourselves: is this really the case?
Similar information can be gleaned from isotopes of the elements neodymium, strontium, lead, and hafnium.