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 Category 1..* GeologicFeature Feature ObservationMethod specifies the approach to acquiring the collection of attribute values that constitute an individual feature instance (e.g. point count, brunton compass on site, air photo interpretation, field observation, hand specimen, laboratory, aerial photography, creative imagination). ObservationMethod is a convenience property that provides a quick and dirty approach to observation metadata when data are reported using a feature view (as opposed to observation view). For a borehole, the GeologicFeature observation method specifies how the geologic properties were determined (eg, visual observation, or standard AzGS logging procedure (described in detail somewhere else)). This property corresponds (loosely) to ISO19115 Lineage.
Attribute tagged values
Tag Value
sequenceNumber 1
nillable True
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 are: instance, typicalNorm, definingNorm.
Attribute tagged values
Tag Value
sequenceNumber 2
definingElement Category 1..* 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 1
nillable True
foliationType FoliationTypeTerm 1..1 Foliation Specifies the type of foliation. Examples include crenulation cleavage, slaty cleavage, schistosity
Attribute tagged values
Tag Value
inlineOrByReference byReference
sequenceNumber 2
continuity Category 1..* Foliation terms to distinguish continuous vs. disjunct cleavages
Attribute tagged values
Tag Value
sequenceNumber 3
nillable True
intensity Category 1..1 Foliation How well the foliation is developed. Terms such as weak, moderate, strong.
Attribute tagged values
Tag Value
sequenceNumber 4
nillable True
mineralElement Mineral 1..* Foliation The mineral that defines the foliation
Attribute tagged values
Tag Value
sequenceNumber 5
nillable True
orientation CGI_PlanarOrientation 1..* Foliation The planar orientation of the foliation
Attribute tagged values
Tag Value
sequenceNumber 6
nillable True
spacing QuantityRange 1..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 7
nillable True
 

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 3
relatedFeature GeologicFeature 1..* GeologicFeature Any geologic feature may be related to another geologic feature. For example, one geologic unit may "overlie" another geologic unit; a geologic unit may be "intersected by" a fault.
Association tagged values
Tag Value
sequenceNumber 4
nillable True
classifier ControlledConcept 1 GeologicFeature A standard description or definition of the feature type (eg; the definition of a particular Geologic Unit in a stratigraphic lexicon)
Association tagged values
Tag Value
inlineOrByReference byReference
sequenceNumber 9
metadata MD_Metadata 1 GeologicFeature
Association tagged values
Tag Value
sequenceNumber 20
nillable True
layerComposition RockMaterial 1 Layering Describes the rock material that may define compositional layering
Association tagged values
Tag Value
sequenceNumber 1
nillable True
 

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
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" type="gsmlst:LayeringType" substitutionGroup="gsmlst:Foliation">

    <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="gsmlst:FoliationType">

            <xs:sequence>

                <xs:element name="layerComposition" type="gsmlem:RockMaterialPropertyType" nillable="true">

                    <xs:annotation>

                        <xs:documentation>Describes the rock material that may define compositional layering</xs:documentation>

                    </xs:annotation>

                </xs:element>

            </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="gsmlst:Layering"/>

    </xs:sequence>

    <xs:attributeGroup ref="gml:AssociationAttributeGroup"/>

    <xs:attributeGroup ref="gml:OwnershipAttributeGroup"/>

</xs:complexType>