Nappe

a large-scale geological structure (tens of kilometres) occurring as a sheet of rock which has been pushed over a fault plane or THRUST at the base. They are formed due to compression, but an alternative mechanism is the sliding due to gravity along a low angle fault, as seen in the Swiss Alps. In many cases, the origin of nappes may be due to a combination of both mechanisms.

Taken from Dictionary of Science

«««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««

In geology, a nappe is a large sheetlike body of rock that has been moved more than 2 km (1.2 miles) or 5 km from its original position. Nappes form during continental plate collisions, when folds are sheared so much that they fold back over on themselves and break apart. The resulting structure is a large-scale recumbent fold. The term stems from the French word for tablecloth.

Nappes or nappe belts are a major feature of the European Alps, Carpathians and Balkans. The concept was developed by the French geologists who unraveled the complex tectonic history of the Alps, led by M.A. Bertrand, who identified the feature as nappe de charriage. In Switzerland it was A. Escher von der Linth and M. Lugeon. At the same time, nappe structure was investigated in northwestern Scotland by Ch. Lapworth. The Austroalpine nappes of the eastern Alps consist of a series of three thrust-faulted nappe stacks which overlie the three older Penninic nappes in this very complex system.

Taken from Wikipedia

Salt

a compound formed when an ACID reacts with a BASE or when a metal atom replaces one or more hydrogen atoms of an acid. Salts can be formed by other reactions such as two salts reacting together to form different compounds. Salt is also the name given to common salt, or sodium chloride (NaCl), which is found in sea water. It is a vital component of our diet although too much is considered harmful.

Taken from Dictionary of Science

_____________________________________________________________

Salt is a dietary mineral composed primarily of sodium chloride that is essential for animal life, but can be toxic to many land plants. Salt flavor is one of the basic tastes, making salt the oldest, most ubiquitous food seasoning. Salt is also an important preservative.

Salt for human consumption is produced in different forms: unrefined salt (such as sea salt), refined salt (table salt), and iodized salt. It is a crystalline solid, white, pale pink or light gray in color, normally obtained from sea water or rock deposits. Edible rock salts may be slightly grayish in color because of mineral content.

Chloride and sodium ions, the two major components of salt, are necessary for the survival of all known living creatures, including humans. Salt is involved in regulating the water content (fluid balance) of the body. Overconsumption of salt increases the risk of health problems, including high blood pressure.

Taken from Wikipedia