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Each year, water and winds erode about 25 billion tons of dirt and rock from the continents and deposit it in the ocean. (5) This material accumulates as loose sediment (i.e., mud) on the hard basaltic (lava-formed) rock of the ocean floor. The average depth of all the mud in the whole ocean, including the continental shelves, is less than 400 meters. (6)

The main way known to remove the mud from the ocean floor is by plate tectonic subduction. That is, sea floor slides slowly (a few cm/year) beneath the continents, taking some sediment with it. According to secular scientific literature, that process presently removes only 1 billion tons per year. (6) As far as anyone knows, the other 24 billion tons per year simply accumulate. At that rate, erosion would deposit the present amount of sediment in less than 12 million years.

Yet according to evolutionary theory, erosion and plate subduction have been going on as long as the oceans have existed, an alleged 3 billion years. If that were so, the rates above imply that the oceans would be massively choked with mud dozens of kilometers deep. An alternative (creationist) explanation is that erosion from the waters of the Genesis flood running off the continents deposited the present amount of mud within a short time about 5000 years ago.

(5) Gordeyev, V.V. et al., ‘The average chemical composition of suspensions in the world’s rivers and the supply of sediments to the ocean by streams’, Dockl. Akad. Nauk. SSSR 238 (1980) 150.

(6) Hay, W.W., et al., ‘Mass/age distribution and composition of sediments on the ocean floor and the global rate of subduction’, Journal of Geophysical Research, 93, No B12 (10 December 1988) 14,933–14,940.