"Salinity is the presence of salt in the land surfaces, in soil or rock, or dissolved in water in our rivers or groundwater".
Salt naturally occurs in many parts of Australia's Landscape. It has been in the soil since well before farming began. Most of the salt is sodium chloride (NaCl), which is table salt, however there are also varying amounts of other salts present such as: sodium bicarbonate (NaHSO4: baking soda), sodium sulphate (Na2SO4: soda ash), magnesium sulphate (MgSO4: Epsom salts), and calcium sulphate (CaSO4: gypsum).
The origins of these salts can be linked to:
oPrehistoric…
