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INNER MANTLE [8 records]

Record 1 2021-07-14

English

Subject field(s)
  • Geology
DEF

The outer liquid shell of the Earth’s core ...

CONT

Earth’s magnetic field is believed to be controlled by the liquid outer core.

CONT

Below the mantle are Earth's outer and inner cores. The outer core is about 2, 250 kilometers(1, 400 miles) thick and made up of molten iron and nickel.

OBS

outer core: term extracted from the "Disarmament and Peace Keeping" glossary with permission of the United Nations Office at Geneva.

French

Domaine(s)
  • Géologie
DEF

Partie liquide du noyau terrestre.

CONT

Le champ magnétique terrestre est produit par le noyau externe de la Terre, une couche liquide constituée en majorité de fer et de nickel et qui entoure la partie solide du noyau, la graine.

OBS

noyau externe : terme tiré du lexique «Désarmement et Maintien de la Paix» avec l'autorisation de l'Office des Nations Unies à Genève.

Spanish

Campo(s) temático(s)
  • Geología
Save record 1

Record 2 2021-07-14

English

Subject field(s)
  • Geology
DEF

The center of the Earth, beginning at a depth of 2900 kilometers.

CONT

At the center of the Earth lies the core, which is nearly twice as dense as the mantle because its composition is metallic(iron-nickle alloy) rather than stony. Unlike the yolk of an egg, however, the Earth's core is actually made up of two distinct parts : a 2, 200-kilometer(1, 400-mile) thick liquid outer core and a 1, 250-kilometer(775-mile) thick solid inner core.

CONT

In composition, the Earth is made of three nested spheres. At the center of Earth, a body of intensely hot iron and nickel forms the core. A less dense and much larger middle sphere is made of materials rich in iron, magnesium and calcium comprises the mantle. The outermost layer is a thin veneer of lighter rocks called the crust.

OBS

Earth’s core: term extracted from the "Disarmament and Peace Keeping" glossary with permission of the United Nations Office at Geneva.

French

Domaine(s)
  • Géologie
DEF

Partie centrale de la Terre située sous le manteau à 2900 kilomètres de la surface de la Terre.

CONT

Le noyau constitue le tiers de la masse terrestre. On y trouve une forte concentration des éléments les plus denses du géosystème, entre autres, le fer et le nickel.

CONT

[...] la Terre est constituée d'un cœur métallique, le noyau, d'un rayon de 3 480 kilomètres, entouré d'une couronne d'oxydes (le manteau et la croûte) épaisse de 2 890 kilomètres. Ce cœur est lui-même composé d'une partie liquide épaisse de 2 260 kilomètres, le noyau externe, où est généré le champ magnétique terrestre, et d'une graine solide d'un rayon de 1 215 kilomètres.

OBS

noyau terrestre : terme tiré du lexique «Désarmement et Maintien de la Paix» avec l'autorisation de l'Office des Nations Unies à Genève.

Spanish

Campo(s) temático(s)
  • Geología
DEF

Parte interior de la Tierra, por debajo de los 2 900 km de profundidad.

CONT

El núcleo se divide en el núcleo externo y el núcleo interno, separados por la zona de transición.

Save record 2

Record 3 2011-05-31

English

Subject field(s)
  • Geology
CONT

The mantle is commonly divided into three parts: the upper mantle ... the transition zone ... and the lower mantle.

CONT

Below the upper mantle is the lower mantle that extends from 670 to 2900 kilometers below the Earth’s surface.

CONT

The lower mantle is thought to be dominated by denser silicates with the composition of olivine but a more compact structure similar to the denser rare mineral perovskite.

French

Domaine(s)
  • Géologie
CONT

Le manteau comprend trois parties : le manteau supérieur, une zone de transition et le manteau inférieur.

CONT

Le manteau inférieur s'étend de 650 à 2900 km de profondeur et présente une minéralogie qui lui est propre. Au moins 70 % de cette envelope est formée de pérovskite, un oxyde.

Spanish

Campo(s) temático(s)
  • Geología
Save record 3

Record 4 2010-03-10

English

Subject field(s)
  • Mollusks, Echinoderms and Prochordates
DEF

The impression or scar on the inner surface of the bilvalve shell marking the attachment of the mantle.

French

Domaine(s)
  • Mollusques, échinodermes et procordés
DEF

Chez les Bivalves, c'est l'impression qui délimite l'attachement du bord musculaire du manteau dans la surface interne.

Spanish

Save record 4

Record 5 2003-08-27

English

Subject field(s)
  • Paleontology
OBS

The parietal lip [of a gastropod] may be formed by... a coating of smooth shelly matter extending out of the aperture and constituting, in fact, the inner wall of the last coil of the helicone. This shelly coating, which is secreted by the entire surface of the mantle... [is called] "callus"...

French

Domaine(s)
  • Paléontologie
OBS

Le "cal", formation calcaire de remplissage issue de la couche interne dont il a l'aspect luisant porcelané et non nacré, peut se développer sur le bord columellaire [...] [d'un Gastéropode], sur le bord pariétal, et même s'enfoncer dans l'ombilic, soit en le tapissant, [...] soit en le comblant partiellement [...]

Spanish

Campo(s) temático(s)
  • Paleontología
Save record 5

Record 6 1998-11-06

English

Subject field(s)
  • Paleontology
DEF

... the inner layer of the shell wall of a bivalve mollusk secreted by the entire epithelium of the mantle...

French

Domaine(s)
  • Paléontologie
CONT

[...] le test [d'un ammonite] est formé en général de trois couches superposées : [...] [la couche] interne ou hypoostracum [est] lamelleuse, nacrée, importante, généralement seule conservée.

Spanish

Save record 6

Record 7 1989-01-09

English

Subject field(s)
  • Mollusks, Echinoderms and Prochordates
DEF

A line or narrow band on the inner surface of a valve of a bivalve-mollusk shell, close to and more or less parallel with the margin, and marking the line of attachment of the marginal muscles of the mantle.

French

Domaine(s)
  • Mollusques, échinodermes et procordés
CONT

Le bord du manteau [d'un mollusque] est renforcé par un muscle orbiculaire rétractile. La trace de ce bord sur la face interne des valves est la ligne palléale [...].

Spanish

Save record 7

Record 8 1977-07-05

English

Subject field(s)
  • Paleontology
OBS

[Gastropods of the] superfamily Patellacea [have shells that are] conical or cap-shaped, bilaterally symmetrical, without perforation of marginal notch, without [an] internal septum; [the] muscle attachment scar [is] semicircular or horseshoe-shaped, open on [the] anterior side; [the] outer shell layer [is] calcitic, inner layers [are] aragonitic, iridescent in some but not nacreous; [they have] no operculum; living forms [are] with [a] single bipectinate ctenidium or with [a] circlet of small branchiae beneath [the] mantle margin or with neither; pallial genital organs [are] wanting; [the] heart [has a] single auricle, [the] ventricle [is] not traversed by [a] rectum; [the] radula [is] long, docoglossate, [the] teeth [are] clawlike, [the] number in each row [is] small, exercising [an] effective rasping stroke during [the] outward protraction of [the] odontophore(...) "?M. Sil.-L. Trias., M. Trias.-Rec. "

French

Domaine(s)
  • Paléontologie
OBS

[Les Gastéropodes de la] super-famille des Patellacea [ont une] coquille conique, non enroulée chez l'adulte mais pouvant avoir une protoconque spiralée. [Ils ont une] empreinte musculaire en fer à cheval [et une] radula decoglosse.

Spanish

Save record 8

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