GENERAL GEOLOGY

Detailed explanation-1: -Most of the salt in the ocean come from rock on the land. So the most significant source of seawater salinity is the chemical weathering of continental rocks and transport of weathered material by the rivers to the oceans.

Detailed explanation-2: -Ocean salt primarily comes from rocks on land and openings in the seafloor. Salt in the ocean comes from two sources: runoff from the land and openings in the seafloor. Rocks on land are the major source of salts dissolved in seawater. Rainwater that falls on land is slightly acidic, so it erodes rocks.

Detailed explanation-3: -Sodium and chloride, the main constituents of the type of salt used in cooking, make up over 90% of all the ions found in seawater. Around 3.5% of the weight of seawater comes from dissolved salts. Some mineral ions are used by marine animals and plants, removing them from the water.

Detailed explanation-4: -Sources. Salt comes from two main sources: sea water and the sodium chloride mineral halite (also known as rock salt). Rock salt occurs in vast beds of sedimentary evaporite minerals that result from the drying up of enclosed lakes, playas, and seas.

Detailed explanation-5: -The saltiest locations in the ocean are the regions where evaporation is highest or in large bodies of water where there is no outlet into the ocean. The saltiest ocean water is in the Red Sea and in the Persian Gulf region (around 40‰) due to very high evaporation and little fresh water inflow.