MantleThe Royal Spanish Academy (RAE) recognizes almost twenty meanings of the term mantle in your dictionary. From the Latin word mantum, the concept can be used to refer to a oversized blanket.

A cloak, in this frame, is a warm garment that lacks sleeves. In the context of religion, the mantle is called vestment that covers the Virgin Mary Yet the cap that certain ecclesiastics wear over their tunic.

The cloak, on the other hand, is the garment worn by knights of military orders and princes, which was tied on the shoulders and covered the body until you hit the ground. The capitular mantle, the chivalrous cloak and the blanket of smoke are part of this class of articles.

Manto is also the stratum that covers a surface or the layer that surrounds something. The terrestrial mantle, for example, is the solid layer found between the central core of the planet Land and the earth’s crust.

In other rocky-type planetary bodies we can also find a mantle: both Venus with Mercury, Mars, the Moon, the asteroid Vesta and two satellites of Jupiter have it. The prerequisite for mantle formation to take place is that the planetary body has passed through the planetary differentiation, a process through which it separates and differentiates as a consequence of its evolution at a physical and chemical level.

With silicates as the main component, the earth’s mantle has a solid and elastic part (the inner mantle) and a fluid part (the outer mantle). It takes place between 33 kilometers and 2900 kilometers of depth approximately.

The process of differentiation of the terrestrial mantle began about 3.8 billion years ago, at which time the components of the Earth were segregated gravimetrically and this caused stratification. At that time, the Earth was a protoplanet: an extremely small body, as if it were an “embryo” of what it will be in the future; its size resembles that of the Moon.

The pressure that can be seen at the base of the mantle is close to 140 pascals, a unit belonging to the International System that is equivalent to one ten thousandth of an atmosphere. The inner mantle is elastic and solid, while the outer is viscous and fluid.

MantleThe main difference between the mantle and the crust of the Earth is in their chemical features and their behaviour mechanical. This causes a definite sudden alteration (something that is also known as discontinuity) in the properties of its materials. This is the so-called Mohorovičić discontinuity, name it received in honor of the scientist who discovered it, Andrija Mohorovičić.

For many years scientists believed that discontinuity de Mohorovičić was the line that divided the plastic structure of the mantle from the rigid one of the crust, that is, where the movement between the plates of the plastic asthenosphere and the rigid lithosphere occurred.

But time has changed the perspective, since the most recent investigations have proven that it is in a considerably lower position, in the upper mantle, approximately 70 kilometers below the oceanic crust and 150 from the continental one. The mantle beneath the crust is made up of materials cold although the discontinuity separates it from the crust.

At colloquial languageFinally, the mantle is called what hide, protect or cover something in a symbolic sense: “Under a cloak of suspicion, tomorrow the winner of the literary award will be announced”, “For years the sect moved in a blanket of silence, but little by little its victims are beginning to speak”, “The team was once again confused under a cloak of doubts”.