Concept in Definition ABC

It is called chasm To that very large and deep cavity or crack that exists in the ground. Behind the earthquake, a huge chasm was opened in the land that makes it impossible for us to transit directly.

The aforementioned cavity opens to the outside from a well, a vertical duct or a steep slope after the succession of a process karst erosive (weathering chemistry of certain rocks) that takes place in the calcareous rock or, failing that, by the collapse of the roof of a cavity through which the Water to levels lower.

Meanwhile, in geology, sima, is a term that by these times is already obsolete, although, at some point it knew how to be used to designate the set of dark and dense rocks that make up the ocean floor and the terrestrial mantle and that appear covered on the continents by blocks of sial (rocks that form the fundamental part of the continental crust); the name results from job of the first two letters of the following words magnesium silicates. In modern theories explaining the structure of the earth and its dynamism, the aforementioned concepts of chasm and sial have become completely obsolete.

They knew how to stand out when at the time, at the request of the theory of the Continental drift (displacement of continental masses relative to each other), he mistakenly imagined the continents as masses of sial sliding over the chasm.

Meanwhile, the concept of chasm in this context has been replaced by that of terrestrial mantle, at least as far as its top is concerned.

And in architecture scottish, the word chasm is normally used as synonym of the word scotland, as it is designated molding concave, continuous and composed of two curves with different radii, the lower arch being the largest; it can also be found by names born and sheet.