By the way, I don't tend to defend all the creationists' logic I have ever
heard either.
I have been told that the geologic collum is found (and is thus repeatable)
in England and in South Dakota.
However, **then** I found that there are different index fossils used in
each column. IF the gelogic column is repeatable, then the rules and
definition for the choice of an index fossil (for example for the period
310 million to 300 million years ago) is crucial or we simply have two
piles of rock that the evolutionists claim to explain.
Fossil animals in England and in South Dakota are claimed to be the same
age because their index fossils are known to give dates.
What are the rules for determining the ages of index fossils? Certainly,
fossil species are not used to date index fossils.
By the way, the concept of index fossils predates radiometric dating.
Russ