True dating model
Since both the daughter and index isotopes vary in time, establishing an initial daughter concentration (via the isochron method) becomes problematic because the y-intercept of the linear plot cannot be assumed to be the primordial ratio of Geochronologists solve this problem by using “stony meteorites” to establish a primordial isotope ratio for This method assumes that the terrestrial Nd has evolved in a uniform reservoir whose Sm/Nd ratio is equal to that of a chrondritic meteorite that is further thought to be similar in composition to the current photosphere of the sun minus the volatile elements.
Hence, the logic used to estimate the initial value of the daughter isotope concentration springs from the evolutionary models for solar system formation and is, again, quite circular in its essence.
CONSTRAINTS Any model of carbon-14 dating must satisfy certain constraints.
First, since carbon-14 dating is objective and reproducible, it cannot be ignored.
Six, or three-quarters of these, are creationist models.
Part 2: The Iconic Isochron The isochron dating method gives erroneous ages for rock formations of known age.
Eight categories of models for converting carbon-14 dates into real time are discussed.
Six of these models are based on a creation as described in Genesis and a short age of life on earth.
To provide context for Part 4, below is a summary of the first three articles—all are available online. There are significant problems with radioisotope dating in general.
The critical closed-system assumption is not realistic—no system can remain unaffected by its environment over millions of years.We talked, enjoyed a couple of cocktails, then at the end of the evening I said, “I know you must get asked out all the time, but I really enjoyed talking to you and would love to see you again. ” There was what felt like an eternity of silence, which in reality was probably more like five seconds. It wasn’t because she wasn’t attractive or wasn’t intelligent. Dating Suzanne taught me an invaluable lesson about entrepreneurship and sales.