Surprisingly, this mud deposit answers an objection against the biblical Flood of Noah’s day.
For many years, geologists have imagined that mud needed a long period of quiet and tranquil conditions before it would settle from water—the thicker the mud layer the longer the time. They calculated the time using Stoke’s Law on a tiny particle. So, whenever geologists observed layers of mudstone or siltstone, they assumed it represented a quiet and tranquil environment and a long time.
Mudstone strata have been used as an argument against the biblical Flood. Some have claimed they prove there was not enough time for mudstone to form.
However, in 2007 a research team showed experimentally that mud deposits readily from moving water (see Mud experiments overturn long-held geological beliefs). Their work calls for a critical reappraisal of all mudstones previously interpreted as having been continuously deposited under still water.
During the Brisbane flood the waters rose and fell quite quickly—within just two or three days. The mud did not have long to deposit yet residents found it everywhere. These smelly mud deposits provide more evidence supporting the biblical account of Noah’s Flood.