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MICROGRANULAR [6 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2017-04-13

English

Subject field(s)
  • Petrography
DEF

Tough, compact, dull to semivitreous, opaque quartz rock composed predominantly of impure fine-grained chalcedony or microgranular quartz or of combinations of the two.

OBS

[This rock is] often white or light gray but may be green, blue, pink, red, yellow, brown, or black and occurs as nodular segregations in limestones and dolomites and less commonly as extensive beds.

French

Domaine(s)
  • Pétrographie
DEF

Concrétion siliceuse dans une matrice calcaire à laquelle elle passe insensiblement et dont elle se détache difficilement.

CONT

Les chailles sont des silex brun clair encore partiellement calcaires (effervescence à l'acide), parfois spongieux et sans patine.

CONT

En général, les chailles (opale, calcédoine, quartz) contiennent des spicules d'éponges, des quartz détritiques, et des témoins résiduels du calcaire, surtout en leur cœur [...] Par décalcification à l'air libre, elles prennent un aspect poreux ou caverneux.

Spanish

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Record 2 2016-01-28

English

Subject field(s)
  • Petrography
DEF

A hypabyssal rock, granitic in composition, having a porphyritic, microgranular texture.

OBS

Microgranites are merely very fine grained types.

OBS

Microgranites and granophyres differ little from granites except in coarseness and texture.

French

Domaine(s)
  • Pétrographie
DEF

Roche hypo-abyssique de même composition que le granite, mais à texture porphyrique, microgrenue.

OBS

Les microgranites [sont] abondants dans les régions granitiques.

Spanish

Campo(s) temático(s)
  • Petrografía
DEF

Roca de igual composición que la del granito, pero de estructura microgranuda, formada en la superficie terrestre a partir de una lava muy viscosa.

Save record 2

Record 3 2012-03-02

English

Subject field(s)
  • General Vocabulary
  • Petrography
CONT

Depending on texture, two submacerals [of gelinite] can be differentiated :(1) porigelinite : finely porous to microgranular in appearance,(2) levigelinite...

OBS

See heading "gelinite" in COPET,S, 1971.

French

Domaine(s)
  • Vocabulaire général
  • Pétrographie
OBS

D'après la texture, on distingue deux macéraux-types de gélinite : la lévigélinite et la porigélinite à faciès finement poreux ou microgranulaire.

Spanish

Save record 3

Record 4 1998-09-03

English

Subject field(s)
  • Petrography
  • Geology
OBS

Microgranular : Minutely granular; specif. said of the texture of a carbonate sedimentary rock wherein the particles are mostly 10-60 microns in diameter and are well-sorted, and the finer clay-sized matrix is absent.

OBS

Limestone: A sedimentary rock containing calcium carbonate (calcite), or calcium-magnesium carbonate (dolomite), or any combination of these two carbonates at least to the extent of 50 percent of the rock.

French

Domaine(s)
  • Pétrographie
  • Géologie
DEF

Calcaire dont les grains de calcite ont une taille allant de 64 à 250 [mu].

Spanish

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Record 5 1977-07-25

English

Subject field(s)
  • Paleontology
OBS

[Forams of the family involutinidae have a] test tubular and enrolled, with secondary deposits in [the] umbilical region on one or both sides; [the] wall [is] calcareous perforate, lamellar, microgranular. "U. Trias.-U. Cret.(Coronam.-Turon.) ".

French

Domaine(s)
  • Paléontologie
OBS

[Les foraminifères de la famille des involutinidae ont un] test agglutinant à ciment, en partie au moins, silicieux (...) et une seconde loge tubulaire planispiralée dont la division en loges, souvent au dernier tour seulement, est presque réalisée, les cloisons restant incomplètes (...)

Spanish

Save record 5

Record 6 1977-07-25

English

Subject field(s)
  • Paleontology
OBS

[Forams of the family litriolidae have a] test free attached, early stage coiled, later may be uncoiled, irregular or annular; [the] wall [is] agglutinated, with calcareous cement or microgranular calcite, [the] interior simple to labyrinthic, [the] epidermal layer imperforate; [the] aperture single or multiple. "Carb-Rec. ".

French

Domaine(s)
  • Paléontologie
OBS

[Les foraminifères de la famille des litriolidae ont] deux caractères essentiels dont un (paroi du test) est presque restreint à cet ensemble, l'autre (subdivision des loges) est commun avec d'autres familles.

Spanish

Save record 6

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