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GRAINED ROCK [13 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2024-07-23

English

Subject field(s)
  • Petrography
CONT

Fine grained volcanic rocks containing floating crystals(phenocrysts) of plutonic material are named using the prefix ’phyric'... Where the phenocrysts are large relative to the crystalline matrix of the rock, the rock is called porphyritic. If the crystals cluster together to form petal like aggregates[, ] they are called glomeroporphyritic or glomerophyric.

French

Domaine(s)
  • Pétrographie
Key term(s)
  • gloméro-porphyrique

Spanish

Save record 1

Record 2 2010-12-13

English

Subject field(s)
  • Petrography
DEF

Applied to sedimentary beds variously defined as less than 30 cm (1 ft) to less than 1 cm (0.4 inch) in thickness.

CONT

shale : A finely grained, thinly bedded rock formed by the hardening of clay, which splits easily into layers.

OBS

thin-bedded: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
CONT

Dolomies finement litées.

OBS

en lits minces; finement stratifié : termes en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 2

Record 3 2010-10-29

English

Subject field(s)
  • Petrography
CONT

Urtite is a nepheline syenite. It is a dark greenish-grey fine to medium grained intrusive rock, occurring in alkaline intrusions. It consists of nepheline(70-90%) with aegirine and feldspar.

OBS

urtite: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
DEF

[Variété d'ijolite] à néphéline très abondante avec un peu d'aegyrine, d'apatite et de zéolites diverses [...]

OBS

[...] l'abondance de néphéline est > 70 %.

OBS

urtite : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Campo(s) temático(s)
  • Petrografía
DEF

Ijolita de color claro, rica en nefelina; contiene apatito y ceolitas.

Save record 3

Record 4 2009-05-14

English

Subject field(s)
  • Petrography
CONT

Protomylonitic rocks commonly contain gently inclined to reclined asymmetrical folds which are contemporaneous with the shearing.

CONT

protomylonitic gneiss : Deformed(ductile), intensely foliated rock [which] has primary cohesion, contains >50% porphyroclasts(commonly lensoid) in finer grained dynamically recrystallised matrix.

OBS

protomylonitic: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
CONT

Texture protomylonitique : de 50 à 95 % de clastes englobés dans une matrice à grain fin, les quartz en rubans sont fréquents.

OBS

protomylonitique : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 4

Record 5 2007-09-17

English

Subject field(s)
  • Petrography
DEF

Having the characteristics of migmatite, which is a coarse grained heterogeneous rock type...

OBS

migmatitic: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
OBS

migmatitique : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 5

Record 6 2007-02-14

English

Subject field(s)
  • Petrography
  • Natural Construction Materials
  • Quarries
DEF

A fine grained sandstone/siltstone exclusive to the Rocky Mountains of Alberta, Canada, locally known as "Rundle Rock" or "Rundlestone".

CONT

Rundle Rock is beautiful, flat and easy to use natural stone that originated in the great Canadian Rocky Mountains. Rich in character, nature provides Rundle Stone in a variety of distinctive black and brown hues creating a look that cannot be replicated by man-made imitations! Rundle Rock can be used for an assortment of purposes, including fireplaces, masonry walls, rock gardens, flowerbeds, retaining walls, stairs, waterfalls, lily ponds, walkways, patios, veneer applications, interior flooring and as feature rocks - the results are always distinctive, beautiful and unique.

OBS

This popular decorative stone was first described by geologist R.G. McConnell in 1887. It was named by stonemasons quarrying the rock from the base of Mount Rundle near the town of Banff. Today this sandstone is quarried just east of Canmore. It originated as sand deposited on Early Mesozoic seafloors about 245 million years ago.

French

Domaine(s)
  • Pétrographie
  • Matériaux de construction naturels
  • Carrières
DEF

Grès brun massif dont les surfaces sont planes et lisses.

OBS

Cette pierre ornementale très en demande a été décrite pour la première fois par le géologue R.G. McConnell en 1887. Son nom lui a été donné par des maçons qui exploitaient la pierre au pied du mont Rundle près de la ville de Banff. De nos jours, ce grès est extrait juste à l'est de Canmore. Il provient de sable qui s'est déposé sur les fonds marins du Mésozoïque précoce il y a environ 245 millions d'années.

Spanish

Save record 6

Record 7 2006-11-15

English

Subject field(s)
  • Petrography
DEF

A variety of peridotite containing abundant olivine with orthopyroxene and clinopyroxene.

CONT

Lherzolite is a type of ultramafic igneous rock. It is a coarse grained rock consisting of 40 to 90% olivine along with significant orthopyroxene and lesser calcic chromium rich clinopyroxene. Minor minerals include chromium and aluminium spinels and garnets.

OBS

[Etymology:] The name is derived from the Lherz Massif, an alpine peridotite complex (also known as orogenic lherzolite complex), (the type locality) at Etang de Lers in the French Pyrenees ...

OBS

lherzolite: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
DEF

Roche magmatique grenue de type péridotite contenant des pyroxènes monocliniques et orthorhombiques avec olivine, hypersthène ou bronzite, diopside chromifère et spinelle.

CONT

La lherzolite est un type de roche plutonique, grenue, qui correspond à la péridotite originelle du manteau supérieur. C'est une roche au grains grossiers se composant de 40 à 90 % d'olivine avec du chrome riche en orthopyroxène et faible en [...] clinopyroxène.

OBS

lherzolite : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 7

Record 8 2006-11-03

English

Subject field(s)
  • Petrography
DEF

Having many pebbles.

CONT

The phosphatic rock is "compact" microcrystalline siderite, medium grained to pebbly ironstone-intraclast wackestones and packstones, and pyrite-phosphate rock...

PHR

Pebbly quartzite.

French

Domaine(s)
  • Pétrographie
DEF

Qualifie une surface ou un dépôt constitués d'une grande abondance de cailloux.

CONT

Roches ferrugineuses de granulométrie moyenne à caillouteuse.

PHR

Quartzite à galets.

Spanish

Save record 8

Record 9 2006-07-03

English

Subject field(s)
  • Petrography
CONT

The phosphatic rock is "compact" microcrystalline siderite, medium grained to pebbly ironstone-intraclast wackestones and packstones, and pyrite-phosphate rock...

French

Domaine(s)
  • Pétrographie
CONT

Les roches phosphatées se composent de sidérite microcristalline «dense», de wackestones et de packstones à intraclastes de roches ferrugineuses de granulométrie moyenne à caillouteuse et de roches phosphatées à pyrite [...]

Spanish

Save record 9

Record 10 2005-03-14

English

Subject field(s)
  • Petrography
  • Tectonics
CONT

Linear fabrics, such as the axes of asymmetric minor folds and mineral and shape lineations, are also characteristic of these areas and are of consistent orientation within a district.

CONT

The basal portion of the dyke is a fine grained aplitic rock with flow-aligned phenocrysts which impart a directional fabric.

French

Domaine(s)
  • Pétrographie
  • Tectonique
CONT

Les fabriques linéaires, telles que les axes de plis mineurs asymétriques, les linéations minérales et les linéations d'étirement sont également des éléments caractéristiques de ces régions et leur orientation montre un fort degré de cohérence à l'intérieur d'un district donné.

CONT

La partie basale du dyke est constituée d'une roche aplitique à grain fin contenant des phénocristaux alignés parallèlement au rubanement, ce qui confère une fabrique linéaire à la roche [...]

OBS

fabrique : Ensemble des caractères structuraux et texturaux d'une roche.

Spanish

Save record 10

Record 11 2004-11-17

English

Subject field(s)
  • Petrography
DEF

Coarse grained carbonatite rock composed of 50% or more calcite that displays adcumulate texture.

OBS

If it is medium-or fine-grained the rock is a micro-sövite.

OBS

Various mineralogical modifiers are used to classify the sövite (e.g., apatite-magnetite sövite, olivine-amphibole sövite, etc.).

French

Domaine(s)
  • Pétrographie
DEF

Carbonatite à grain grossier composée d'au moins 50 % de calcite et présentant une texture à adcumulats.

OBS

Si elle est à grain fin ou moyen, la roche est une microsövite.

OBS

Diverses distinctions minéralogiques sont utilisées pour classifier la sövite (p. ex. sövite à apatite-magnétite, sövite à olivine-amphibole, etc.).

Spanish

Campo(s) temático(s)
  • Petrografía
Save record 11

Record 12 2004-11-15

English

Subject field(s)
  • Petrography
CONT

... types of hydrothermal breccias... include "jigsaw-puzzle" breccias, characterized by angular fragments of altered wall rock in a fine grained matrix of quartz and/or tourmaline...

French

Domaine(s)
  • Pétrographie
CONT

[Des] types de brèches hydrothermales [...] sont notamment des brèches à texture de «casse-tête», caractérisées par des fragments anguleux des roches encaissantes altérées répartis dans une matrice à grain fin de quartz ou de tourmaline [...]

Spanish

Save record 12

Record 13 1999-10-21

English

Subject field(s)
  • Petrography
DEF

matrix : The finer grained material between the larger particles of a rock...

French

Domaine(s)
  • Pétrographie
OBS

Dissolution de la roche entière, de certain cristaux ou seulement du ciment.

Spanish

Save record 13

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