“We have been familiar with these ‘slow processes’ since early grade school, such as the claim it takes millions of years to form oil. People claim that all these features take place slowly mostly because naturalistic scientists have assumed that they had to occur slowly. When we bring the Genesis Flood back into our thinking, all, or practically all, these ‘slow’ processes could have happened rapidly. The Flood is the great ‘time cruncher’.”
“Creationists have answers to dozens of these Earth science challenges, which Snelling summarizes in one convenient spot in Part X. Some of the many processes that can occur rapidly during or after the Flood are: (1) deposition of thick sediments and lithification, (2) hardgrounds, (3) chalk and diatomite beds, (4) coral reefs and limestone, (5) ‘evaporites’, (6) varves and rhythmites, (7) buried ‘fossils forests’, (8) coal beds, (9) oil deposits, (10) limestone caves and cave deposits, (11) regional metamorphism, (12) granite formation, (13) ore and mineral deposits, and (14) ancient ‘ice ages’. This material is a summary of more extensive creationist writings on these subjects. So, we have reasonable answers to many earth-science challenges.27”
Source: https://creation.com/review-snelling-earths-catastrophic-past