...it is possible to locate oil by relative dating of the rocks and a knowledge of their morphology.
I'm inclined to believe that the above is true, but...
Understanding the processes that resulted in the geology and the relative dating and morphology leads to the conclusion of an old Earth.
You have a huge compilation of "this happened, then this happened, etc., etc., etc.", which can't happen by realistic processes, in a YEC time framework.
Moose