ABSTRACT
This chapter shows how to explain water movements that create the large volume differences over very large distances. It describes a large part of the sedimentary rocks found on Earth come from marine sediments and focuses on this environment. There are three types of oceanic sediments that form sedimentary rocks: Detrital sediments, Biogenic sediments, in which a living organism is the source of the sediment, Evaporitic sediments resulting from physico-chemical precipitation of salts contained in seawater. The chapter explains two very different types of river mouths in coastal areas: deltas in regions where there is a notable hydraulic gradient and estuaries of rivers with a low or time-variable hydraulic gradient. A large part of the sedimentary rocks found on Earth come from marine sediments. The chapter also describes the evolution of the sedimentary environment and the paleogeographic context by choosing several characteristic stages in this history.
