To my knowledge, no credentialed, serious scientist argues for the existence of "Father Christmas." The same can not be said for Young Earth Creationism. As for geology, some at least of the pioneers in the study of geology believed in the Noachian flood and placed their studies within that framework. See http://www.answersingenesis.org/home/area/bios/Scriptural_geologists.asp#background
and the subsequent articles in that series by Terry Mortensen, MDiv, PhD.