Tuesday, March 08, 2005

Why are there variations?

ucheekechi asked:
There is a variation in nature, distribution, and forms of marine sediments all over the world (both vertically and horizontally). What are the various ways climate contributes to the variations and what are the results?

Sea levels rise and fall over geological eons. Earth movements lift areas that were originally under the sea, so marine sediments no longer accumulate. In terms of climate, some areas will be wetter, with more water bringing more sediment into the sea and other areas will be drier, so less sediment is brought down. Also, the type of land through which water travels will affect the type of sediment deposited.