Both laboratories use standard, best-practice procedures on state-of-the-art equipment and routinely provide accurate and repeatable measurements of the required isotopes.
It is important to realize that the laboratories do not measure the ‘age’ of the rocks but the isotopes in them at the present time.
How would a scientist estimate the time when a canyon formed?
Various techniques and different interpretations of those techniques have yielded a wide range of estimated dates for the formation of Arizona's Grand Canyon.
Geologic history Although its awesome grandeur and beauty are the major attractions of the Grand Canyon, perhaps its most vital and valuable aspect lies in the time…...
Many people, including many scientists, accept these dates as absolute truth.
Geologists overcome this problem by ‘interpreting’ the result.
All would be well if you could count on receiving the same answer!
They believe that when different radio-dating methods are used on the same rocks, they will all yield the same age.
But the quest to test this belief by sampling rocks from deep within Grand Canyon has found it is not true.
Please try to explain the behavior of the individual isotope systems in the future. USA There is nothing irresponsible with my article in Creation, volume 27, number 3, 2005, on the radioisotope dating of rocks in Grand Canyon (pages 44–49).
Also, if you asked any geochronologist interested in dating the crystallization age of the Precambrian rocks in the Grand Canyon, not a single one would even consider using the K-Ar system. The article reported that there were problems with the different radioisotope systems in obtaining the true age of these metamorphosed basalts in the Precambrian crystalline basement of the Grand Canyon.
Geologists calculate an ‘age’ using the measured amount of a ‘daughter’ isotope (e.g.