Young Oceans A thin veneer of sediments lies on the vast and deep ocean floors of the world, atop the basaltic volcanic rock which composes the oceanic crust of the earth, and this defies the notion that the oceans are hundreds of millions, or billions, of years of age, because the oceans should have filled with sediments within 80 million years, at the current erosion rate of 27 billion tons of sediment per year which enters the ocean, most of it at the river deltas, the mouths of the continental drainage systems.
Evolution: The Ocean says NO! Two basic models for the world ocean can be imagined. According to evolutionary-uniformitarian geologists, the earth is approximately 4.5 billion years old. The world ocean is supposed to have formed by outgassing of water by volcanic processes early in the earth's history. By no later than 1 billion years ago, in the popular scheme, the ocean reached its present size and chemical condition, and primitive one-celled life forms had already evolved by chance processes from lifeless chemicals. For a period of at least 1 billion years the ocean has remained at roughly constant salinity while the single-celled creatures evolved into mollusks, fish, reptiles, mammals, and finally man. During this vast period of time the continents have been eroding more or less continuously with debris being steadily deposited as sediments on the ocean floor.
An alternate to the evolutionist's view of the ocean is the creationist's view. According to the creationist, the ocean formed very recently—perhaps only 10,000 years ago. The earth in its original condition was covered with water (Genesis 1:2), but later God formed the ocean basins by gathering the waters together allowing the dry land to appear (Genesis 1:9). The ocean again covered the earth during the universal Flood in the days of Noah, and returned to their present basins following the Flood...
In only 30 million years assuming constant rate of erosion all the ocean sediments could have accumulated. This age does not square with the over 1 billion year age assumed by evolutionary uniformitarian geologists.
Impact of Modern Erosion Geology textbooks often discuss the question of why mountins still exist, since they should ad been eroded away many times. The standard answer is that mountain ranges are being renewed as they are pushed up from below. This argument seems invalid, because we still find much of the geologic column in te mountains. Apparently we have not completed even one cycle of erosion and replacement. It appears more likely that the sedimentary layers were laid down by the Genesis Flood and partially eroded by receding flood waters, leaving most of the geologic column there.
[all text are quotes from links]