Class <<FeatureType>> Contact (extends GeologicStructure)

Very general concept representing any kind of surface separating two geologic units including primary boundaries such as depositional contacts, all kinds of unconformities, intrusive contacts, and gradational contacts, as well as faults that separate geologic units.

Permeability of contacts still needs to be modeled; considered out of scope for GeoSciML2.

Bedding measured as discrete surfaces in the case that those are the feature of interest (e.g. individual cross set surfaces for paleocurrent analysis) should be represented here.

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
contactCharacter CGI_TermValue 0..1 Contact The character of the boundary, as opposed to its type. e.g. abrupt, gradational
Attribute tagged values
Tag Value
sequenceNumber 2
contactType ControlledConcept 0..1 Contact Classifies the contact (eg intrusive, unconformity, bedding surface, lithologic boundary, phase boundary); if a vocabulary of named contacts exists that might be used to classify as well.
Attribute tagged values
Tag Value
sequenceNumber 3
orientation CGI_PlanarOrientation 0..* Contact orientation of the contact surface
Attribute tagged values
Tag Value
sequenceNumber 4
 

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
boundedUnitLink BoundaryRelationship 0..1 Contact Specifies the BoundaryRelationship that describes the participating GeologicUnits
Association tagged values
Tag Value
sequenceNumber 5
 

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="Contact" substitutionGroup="gsml:GeologicStructure" type="gsml:ContactType">
    <xs:annotation>
        <xs:documentation>Very general concept representing any kind of surface separating two geologic units including primary boundaries such as depositional contacts, all kinds of unconformities, intrusive contacts, and gradational contacts, as well as faults that separate geologic units.

Permeability of contacts still needs to be modeled; considered out of scope for GeoSciML2.

Bedding measured as discrete surfaces in the case that those are the feature of interest (e.g. individual cross set surfaces for paleocurrent analysis) should be represented here.</xs:documentation>
    </xs:annotation>
</xs:element>
<xs:complexType xmlns:xs="http://www.w3.org/2001/XMLSchema" name="ContactType">
    <xs:complexContent>
        <xs:extension base="gsml:GeologicStructureType">
            <xs:sequence>
                <xs:element maxOccurs="1" minOccurs="0" name="contactCharacter" type="gsml:CGI_TermValuePropertyType">
                    <xs:annotation>
                        <xs:documentation>The character of the boundary, as opposed to its type. e.g.  abrupt, gradational</xs:documentation>
                    </xs:annotation>
                </xs:element>
                <xs:element maxOccurs="1" minOccurs="0" name="contactType" type="gsml:ControlledConceptPropertyType">
                    <xs:annotation>
                        <xs:documentation>Classifies the contact (eg intrusive, unconformity, bedding surface, lithologic boundary, phase boundary); if a vocabulary of named contacts exists that might be used to classify as well.</xs:documentation>
                    </xs:annotation>
                </xs:element>
                <xs:element maxOccurs="unbounded" minOccurs="0" name="orientation" type="gsml:CGI_PlanarOrientationPropertyType">
                    <xs:annotation>
                        <xs:documentation>orientation of the contact surface</xs:documentation>
                    </xs:annotation>
                </xs:element>
                <xs:element maxOccurs="1" minOccurs="0" name="boundedUnitLink" type="gsml:BoundaryRelationshipPropertyType">
                    <xs:annotation>
                        <xs:documentation>Specifies the BoundaryRelationship that describes the participating GeologicUnits</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="ContactPropertyType">
    <xs:sequence minOccurs="0">
        <xs:element ref="gsml:Contact"/>
    </xs:sequence>
    <xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
</xs:complexType>