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SALBANDA [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2016-01-15

English

Subject field(s)
  • Geomorphology and Geomorphogeny
  • Tectonics
  • Petrography
DEF

Soft, uncemented pulverized clayey or claylike material, commonly a mixture of minerals in finely divided form, found along some faults or between the walls of a fault, and filling or partly filling a fault zone.

OBS

... a slippery mud that coats the fault surface or cements the fault breccia. ... It is formed by the crushing and grinding of rock material as the fault developed, as well as by subsequent decomposition and alteration caused by underground circulating solutions.

French

Domaine(s)
  • Géomorphologie et géomorphogénie
  • Tectonique
  • Pétrographie
OBS

Le déplacement le long d'une faille broie souvent la roche et forme un amas de roches moulues ressemblant à de l'argile; cet amas, dont l'épaisseur varie d'une fraction de pouce à plusieurs pieds, est appelé salbande.

Spanish

Campo(s) temático(s)
  • Geomorfología y geomorfogénesis
  • Tectónica
  • Petrografía
DEF

Roca de falla sin cohesión, de grano fino o muy fino y rica en arcillas, que puede poseer una foliación tectónica y que contiene menos del 30% de fragmentos visibles.

CONT

La salbanda de falla es una roca arcillosa pulvurulenta, poco consolidada y rompible con los dedos (salvo cuando ha sido cementada por fluidos hidrotermales), que pueden presentar colores desde blanco grisáceo hasta llamativos colores (rojos, verdes, violáceos).

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Record 2 2011-05-09

English

Subject field(s)
  • Metals Mining
  • Geochemistry
  • Erosion and Weathering (Geol.)
DEF

A layer of soft material along the wall of a vein or between the country rock and the vein.

CONT

Alteration margins along individual veins or fractures range from narrow selvages one centimetre wide or less to broader zones as much as several metres wide.

OBS

gouge: So named because a miner is able to "gouge" it out with a pick, to attack the solid vein from the side.

PHR

Clay gouge.

French

Domaine(s)
  • Mines métalliques
  • Géochimie
  • Érosion et corrosion (Géologie)
DEF

Formation lithologique spéciale servant de contact entre le remplissage filonien, ou caisse filonienne, et les épontes.

CONT

On appelle «salbande» la matière tendre ou légèrement schisteuse que l'on trouve parfois sur les épontes des veines; cette matière est due au broyage résultat des mouvements de deux surfaces l'une sur l'autre.

CONT

Les bordures d'altération des fractures ou filons individuels peuvent s'apparenter à des salbandes étroites d'une largeur de 1 cm ou moins, ou encore s'étendre à des zones larges de plusieurs mètres.

Spanish

Campo(s) temático(s)
  • Minas metálicas
  • Geoquímica
  • Erosión y corrosión (Geología)
DEF

Capa arcillosa que, en ciertos yacimientos, separa el mineral de la roca estéril.

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