Class <<FeatureType>> Layering (extends Foliation)

Planar foliation defined by a tabular succession of layers &gt; 5 mm thick. This definition is based on the proposed definition of gneiss by the NADM Science Language Technical Team, so that the GeologicStructure characteristic of gneiss is layering. The committee discussed the possibility that layering should be considered a kind of foliation, but the majority opinion was that it is a different kind of structure.

Kept so that instance documents have a "Layering" tag

Local Subclasses: (none)

Attributes

Name Type Bounds From Class Notes
observationMethod CGI_TermValue 1..* GeologicFeature Term(s) that specify the method by which the values for the GeologicFeature were obtained (e.g. point count, brunton compass on site, air photo interpretation, field observation, hand specimen, laboratory, aerial photography, creative imagination...). This corresponds (loosely) to ISO19115 Lineage.

Statement specifies the method that was used to identify the MappedFeature. Examples: .
Attribute tagged values
Tag Value
sequenceNumber 2
purpose DescriptionPurpose 1..1 GeologicFeature Specification of the intended purpose/level of abstraction for a given feature or object instance. Scoped name because intention is asserted by author of the data instance. Values: Instance, TypicalNorm, IdentifyingNorm.
Attribute tagged values
Tag Value
sequenceNumber 3
definingElement CGI_Term 0..* Foliation Kinds of describable inhomogeneity in a rock body that may define a GeologicStructure. Examples include Discontinuity, Shaped Surface, Oriented Particle, Material Boundary, and Layer.
Attribute tagged values
Tag Value
sequenceNumber 2
foliationType ControlledConcept 1..1 Foliation Specifies the type of foliation. Examples include crenulation cleavage, slaty cleavage, schistosity
Attribute tagged values
Tag Value
sequenceNumber 3
continuity CGI_Term 0..* Foliation terms to distinguish continuous vs. disjunct cleavages
Attribute tagged values
Tag Value
sequenceNumber 4
intensity CGI_Term 0..1 Foliation How well the foliation is developed. Terms such as weak, moderate, strong.
Attribute tagged values
Tag Value
sequenceNumber 5
mineralElement Mineral 0..* Foliation The mineral that defines the foliation
Attribute tagged values
Tag Value
sequenceNumber 6
orientation CGI_PlanarOrientation 0..* Foliation The planar orientation of the foliation
Attribute tagged values
Tag Value
sequenceNumber 7
spacing CGI_Numeric 0..1 Foliation linear dimension representing the thickness of foliation domains. Also use for thickness of layers of a given composition
Attribute tagged values
Tag Value
sequenceNumber 8
 

Outbound Associations

Name Type Multiplicity From Class Notes
occurrence MappedFeature 0..* GeologicFeature Points to any number of mapped features which are occurrences of the geologic feature. Mapped features may all be from a single map or from several maps.
Association tagged values
Tag Value
sequenceNumber 4
preferredAge GeologicEvent 0..1 GeologicFeature Specifies the geologic event that the data supplier considers the 'preferred' event age and event process for that feature.
This is the age and process of the feature that would be commonly shown on a geologic map (eg deposition age, peak temperature age, intrusion age).
Normative geologic unit descriptions are expected to include an age specification whenever the age is constrained--even if the range is very large (e.g. Phanerozoic....).
Association tagged values
Tag Value
sequenceNumber 5
geologicHistory GeologicEvent 0..* GeologicFeature A sequence of GeologicEvents with role geologicHistory allow describing the Genesis of the GeologicFeature. In future versions of GeoSciML this sequence should be ordered.
Association tagged values
Tag Value
sequenceNumber 6
targetLink GeologicFeatureRelation 0..* GeologicFeature Specifies the GeologicFeatureRelation that links the 'source' GeologicFeature to the 'target' GeologicFeature.
Association tagged values
Tag Value
sequenceNumber 8
metadata MD_Metadata 0..1 GeologicFeature feature level metadata associated with the GeologicFeature
Association tagged values
Tag Value
inlineOrByReference byReference
sequenceNumber 10
layerComposition RockMaterial 0..1 Layering
Association tagged values
Tag Value
sequenceNumber 4
 

Constraints

Constraint Type Status Weight
 

Tagged values

Tag Value Notes
byValuePropertyType false Values: true,false
Default: false
Description: enforce the 'by value' property pattern without xl
hasXmlLang false Values: true | false
Default: false
Description: axml attribute xml:lang shall be generated for the type representing the class
isCollection false Values: true,false
Default: false
Description: attribute group gml:AggregationAttributeGroup is a
noPropertyType false Values: true,false
Default: false
Description: suppress automatic creation of *PropertyType compl
 

GML-conformant XML Implementation Details

<xs:element xmlns:xs="http://www.w3.org/2001/XMLSchema" name="Layering" substitutionGroup="gsml:Foliation" type="gsml:LayeringType">
    <xs:annotation>
        <xs:documentation>Planar foliation defined by a tabular succession of layers &amp;gt; 5 mm thick. This definition is based on the proposed definition of gneiss by the NADM Science Language Technical Team, so that the GeologicStructure characteristic of gneiss is layering. The committee discussed the possibility that layering should be considered a kind of foliation, but the majority opinion was that it is a different kind of structure.

Kept so that instance documents have a "Layering" tag</xs:documentation>
    </xs:annotation>
</xs:element>
<xs:complexType xmlns:xs="http://www.w3.org/2001/XMLSchema" name="LayeringType">
    <xs:complexContent>
        <xs:extension base="gsml:FoliationType">
            <xs:sequence>
                <xs:element maxOccurs="1" minOccurs="0" name="layerComposition" type="gsml:RockMaterialPropertyType"/>
            </xs:sequence>
        </xs:extension>
    </xs:complexContent>
</xs:complexType>
<xs:complexType xmlns:xs="http://www.w3.org/2001/XMLSchema" name="LayeringPropertyType">
    <xs:sequence minOccurs="0">
        <xs:element ref="gsml:Layering"/>
    </xs:sequence>
    <xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
</xs:complexType>