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 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
contactCharacter Category 1..* Contact The character of the boundary, as opposed to its type. e.g. abrupt, gradational
Attribute tagged values
Tag Value
sequenceNumber 1
nillable True
contactType ContactTypeTerm 1..1 Contact Classifies the contact (eg intrusive, unconformity, bedding surface, lithologic boundary, phase boundary)
Attribute tagged values
Tag Value
sequenceNumber 2
inlineOrByReference byReference
orientation CGI_PlanarOrientation 1..* Contact orientation of the contact surface
Attribute tagged values
Tag Value
sequenceNumber 3
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
correlatesWith GeochronologicBoundary 1 Contact Associates a physical geologic contact with a geochronologic (ie, time zone) boundary that may correlate with it. Association only allowed if contactType = ChronostratigraphicBoundary.
Association tagged values
Tag Value
sequenceNumber 4
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="Contact" type="gsmlst:ContactType" substitutionGroup="gsmlst:GeologicStructure">

    <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.  

				

				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="gsmlst:GeologicStructureType">

            <xs:sequence>

                <xs:element name="contactCharacter" nillable="true" minOccurs="1" maxOccurs="unbounded">

                    <xs:annotation>

                        <xs:documentation>The character of the boundary, as opposed to its type. e.g. abrupt, gradational</xs:documentation>

                    </xs:annotation>

                    <xs:complexType>

                        <xs:complexContent>

                            <xs:extension base="swe:CategoryPropertyType">

                                <xs:attribute name="nilReason" type="gml:NilReasonType"/>

                            </xs:extension>

                        </xs:complexContent>

                    </xs:complexType>

                </xs:element>

                <xs:element name="contactType" type="gml:ReferenceType">

                    <xs:annotation>

                        <xs:appinfo>

                            <gml:targetElement xmlns:gml="http://www.opengis.net/gml/3.2">gsmlst:ContactTypeTerm</gml:targetElement>

                        </xs:appinfo>

                        <xs:documentation>Classifies the contact (eg intrusive, unconformity, bedding surface, lithologic boundary, phase boundary)</xs:documentation>

                    </xs:annotation>

                </xs:element>

                <xs:element name="orientation" nillable="true" minOccurs="1" maxOccurs="unbounded">

                    <xs:annotation>

                        <xs:documentation>orientation of the contact surface</xs:documentation>

                    </xs:annotation>

                    <xs:complexType>

                        <xs:complexContent>

                            <xs:extension base="gsmlu:CGI_PlanarOrientationPropertyType">

                                <xs:attribute name="nilReason" type="gml:NilReasonType"/>

                            </xs:extension>

                        </xs:complexContent>

                    </xs:complexType>

                </xs:element>

                <xs:element name="correlatesWith" type="gsmlgt:GeochronologicBoundaryPropertyType" nillable="true">

                    <xs:annotation>

                        <xs:documentation>Associates a physical geologic contact with a geochronologic (ie, time zone) boundary that may correlate with it.  Association only allowed if contactType = ChronostratigraphicBoundary.</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="gsmlst:Contact"/>

    </xs:sequence>

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

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

</xs:complexType>