Frequently, one colored geologic formation is tightly stacked upon another formation. If there were really millions of years of gradual deposition (as normally assumed), wouldn’t the water saturated with the chemicals responsible for the coloration have seeped into the formations below? This would result in unclear boundaries between formations, but we see razor sharp boundaries. Perhaps alternating currents during the time of the Flood quickly stacked one layer on top of another. Each current contained different chemicals which were mixed with and deposited with its sediments.
Another item challenges these boundaries and the evolutionary time-scales. These items are single fossils (termed polystrate fossils) that completely cut through an entire sequence of rock layers. A fossil snail was found on its edge cutting through what was considered 20 million years of layers. That was one tough snail to stand on its tail for that length of time. A single petrified tree was found cutting through what was assumed to be 100 million years of layers. Did that tree live for 100 million years as the mud slowly piled up around it? These fossils were more likely buried very rapidly by Noah’s Flood.