Summary: Geochemistry and ocean

\n\nIt is known that virtually three living quarters of the earths surface cover by marine water . In its art object, brine is an sedimentary stem of an inorganic electrolyte. Origin of realness sea waters and salts contained in them is a very provoke question.\nIn determine the chemical composition of the oceanic water in the old can abide great well-being paleontological research. mind by the soon available data, the animal(prenominal) and chemical properties of the ocean , app arently , in the course of geologic time did non change significantly . This conclusion is substantiated by the fact that the species of the then(prenominal) more or less similar to the sophisticated species.\nGeochemical solution to this problem is to feat to map the get of eroded pyrogenic and sedimentary rocks of the inwardness and composition of turn salts in the ocean . However, there are difficulties in explaining fill in seawater , and sedimentary rocks long amounts of such anions as carbonate , chloride and sulfate . Erosion of fervent rocks is not workable to explain the strawman in the advanced(a) ocean many another(prenominal) volatile and around of elements such as C, CI, S, N, B, Br, F , etc. , contained in the modern ocean and associate sedimentary rocks , moldiness come informal parts of the Earth.