Dust of the Sahara - the basis for the formation of the coast of the Bahamas

Researchers at the Rosenstiel School of Marine and Atmospheric Sciences (University of Miami), led by Professor Peter Swart, have established that the iron-rich dust of the Sahara plays an important role in shaping the coast of the Bahamas.

Scientists analyzed the concentration of two elements characteristic of atmospheric dust - iron and manganese - in 270 sediment samples along the Great Bahamas over three years. They found that the highest concentration of these substances is located west of the island of Andros in the Laden reservoirs, which are abundantly saturated with chalk sediments, which are formed as a result of the synthesis of cyanobacteria. The fact is that in comparison with other bacteria, they need 10 times more iron.

The supplier of the mineral is the dust of the largest desert in the world - the Sahara, which is rich in iron, which has been brought here for thousands of kilometers by atmospheric currents for 100 million years. As a result of chemical reactions in which cyanobacteria participate, the coastal strip of the Bahamas shimmers with unique colors.