Geologists were not there to empirically confirm their interpretation of prehistoric events.
Please don't tell me you are asking that every event be personally witnessed for it to have adequate evidence that it occurred!
This is one of the dullest of the creationists' arguments, long since discredited.
Please tell me you are not dredging it up again as if it still had some meaning!
Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.