A planar arrangement of textural or structural features in any type of rock. Includes any of a wide variety of penetrative planar geological structures that may be present in a rock. Examples include schistosity, mylonitic foliation, penetrative bedding structure (lamination), and cleavage. Following the proposed definition of gneiss by the NADM Science Language Technical Team, penetrative planar foliation defined by layers > 5 mm thick is considered Layering.
Bedding as a fabric representing the average orientation of paleodepositional surface should be encoded through the foliationType; might apply to bedding that is layering or a foliation without layering (e.g. clast alignment in amalgamated beds).
| Egenskap |
Stereotype |
Beskrivelse |
Type |
Multiplisitet |
| foliationType |
|
Specifies the type of foliation. Examples include crenulation cleavage, slaty cleavage, schistosity
|
FoliationTypeTerm |
1..1 |
| definingElement |
estimatedProperty |
Kinds of describable inhomogeneity in a rock body that may define a GeologicStructure. Examples include Discontinuity, Shaped Surface, Oriented Particle, Material Boundary, and Layer.
|
CGI_Term |
1..* |
| continuity |
estimatedProperty |
terms to distinguish continuous vs. disjunct cleavages
|
CGI_Term |
1..* |
| intensity |
estimatedProperty |
How well the foliation is developed. Terms such as weak, moderate, strong.
|
CGI_Term |
1..1 |
| mineralElement |
estimatedProperty |
The mineral that defines the foliation |
Mineral |
1..* |
| orientation |
estimatedProperty |
The planar orientation of the foliation |
CGI_PlanarOrientation |
1..* |
| spacing |
estimatedProperty |
linear dimension representing the thickness of foliation domains. Also use for thickness of layers of a given composition
|
CGI_NumericRange |
1..1 |
| Navn |
Type |
Lengde |
Multiplisitet |
|
FoliationTypeTerm |
|
1..1 |
|
CGI_Term |
|
1..* |
|
CGI_Term |
|
1..* |
|
CGI_Term |
|
1..1 |
|
Mineral |
|
1..* |
|
CGI_PlanarOrientation |
|
1..* |
|
CGI_NumericRange |
|
1..1 |
