They can read the geological record.
They can SPECULATE and offer conjectures in relation to the supposed geological record as recorded by those who practice "pseudo science".
Reality: The entire geologic column used today, supposedly composed of all the layers of rock strata systems, exist only in diagrams "drawn" by supposed geologists. If the column were based upon reality, the column would reach into the upper atmosphere. Its all based upon a theory.....NOT facts as determined by the scientific method. Its a REPRESENTATION called stratigraphy. And its not consistent around the globe as presented. Example: the Statigraphy Column used in the United States finds the east coast inverted from the west coast.......meaning its impossible to accurately date, its all based upon the logical fallacy of searching for a target date that is predetermined.
Here are the documented FACTS. The column used to represent ages of both fossils and rock strata are not WORLDWIDE as you are suggesting in making the assumptions about the earth's supposed geological ages. The very notion that is promoted as a source of calibration for age determination claiming the earth has an onion like skin, made up in consistent layers all around the globe is nothing but a logical fallacy. The pseudo scientists suggest that the earth is made up of 10 layers like an onion skin and these layers are distributed equally around the globe.
Reality: Factual. The data from continents and ocean basins show that the supposed 10 layers are poorly represented at best on a global scale 70% of the earths supposed layers are missing in the supposed calibration source using the column scale. The data proves that in the ocean basins..........over 77% of these supposed layers are missing. Considering the fact that the world's oceans make up 71% of the earth's total surface mass................
Now you are pointing to these theories as PROOF the Bible is wrong when it documents the facts of Continental drift, and how the earth has changed during the flood event? Really?
Reality: You have no idea, might less any source of Objective, Observable, Consistent facts to present........you have conjecture, assumption and speculation based upon the need for a targeted Billions of Years instead of simply following the evidence in any factual manner.