Why did atheism drift into the science field around the mid 19th century ?

The great flood theory and catastrophism was abandoned for glaciation ( Louis Agassiz's theory which states that instead of a great catastrophe and flood, drift rocks aand other phenomenon was caused by glaciation and uniformitarianism in order to cover up bible truth and indoctrinate the general lay public with lies from the scientific community. Darwin and his theory was all a part of this atheist movement. Example of real science = Plutarch's account of the Ogygian flood, Abraham Werner, George Cuvier, Bucklund, and even Luis Alvarez's impact discovery which is still not accepted due to fears of the public discovering the bible and science aline perfectly (as seen in the gap theory) !!!