“If the assertions of so-called Young Earth Creationists are to be credited as true, what are we to make of certain rock formations, or certain aspects of the fossil record?”
You’re conflating ID with biblical creationism. The two are actually very different.
ID makes its case on strictly scientific grounds and methodology.
If you are truly interested in finding out what ID is really about, I heartily recommend Stephen Meyer’s “Signature in the Cell”. I guarantee it will change your views.
Do you believe, as I do, that Holy Scripture is inerrant?
If so, do you believe, as I do, that the six days during which God created creation were consecutive days of normal length, i.e., a time span of about 144 hours?
It is probably obvious that I do not subscribe to the theory of theistic evolution.