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FRACTURE SCHISTOSITY [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2010-09-22

English

Subject field(s)
  • Tectonics
DEF

The capacity to part along closely spaced, parallel surfaces of fracture or near-fracture, commonly in a single set, but occasionally in intersecting sets.

CONT

It is important to mention the presence of a deformation band, with fracture schistosity, in the area affected by low-grade metamorphism.

OBS

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

French

Domaine(s)
  • Tectonique
DEF

Schistosité caractérisée par un débit relativement espacé et irrégulier, portant souvent l'empreinte de dissolution.

CONT

[...] la schistosité de fracture [...] n'est parfois qu'une simple tendance au débitage en feuillets parallèles.

OBS

clivage de fracture; schistosité de fracturation : termes en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 1

Record 2 2009-02-03

English

Subject field(s)
  • Tectonics
DEF

One of numerous parallel surfaces of bedding or foliation which indicate directional properties in rock [and] may be warped.

CONT

Workers on petrofabrics correlate s-surfaces of all kinds with deforming movements, but do not attempt anything more than a very broad correlation with deforming forces. They have shown that several sets of schistosity-surfaces may originate in a single deformation (as Becker insisted), though it is also possible for a second schistosity to be superposed upon s-planes of an earlier deformation.

OBS

There is considerable confusion in the prevalent usage of terms such as schistosity, foliation, flow cleavage, fracture cleavage, etc., Sander... recommends the employment of a purely descriptive non-genetic term to cover the parallel fabrics of metamorphic rocks; he includes all such structures("sets of planes of mechanical inhomogeneity") in his term "s-surfaces"("s-planes").

OBS

The term "s-plane" refers more specifically to a planar surface.

OBS

schistosity: The property by virtue of which rocks cleave along surfaces (not necessarily plane) determined by crystallisation or mechanical deformation of the rock-forming material under the influence of stress or high temperature.

Key term(s)
  • s surface

French

Domaine(s)
  • Tectonique
CONT

On a pu se rendre compte après la rupture [...] que le rocher présente sur ces surfaces de foliation, une résistance à la traction et au cisaillement plus faible que dans les autres directions.

OBS

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

Spanish

Save record 2

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