Class <<Type>> GeochronologicBoundary (extends TimeOrdinalEraBoundary)

A boundary between two geochronologic time periods

Local Subclasses: (none)

Attributes

Name Type Bounds From Class Notes
position TM_Instant 1..1 TimeOrdinalEraBoundary A point in time corresponding to the era boundary
Attribute tagged values
Tag Value
sequenceNumber 7
positionalUncertainty DQ_QuantitativeAttributeAccuracy 1..1 TimeOrdinalEraBoundary A measure of the uncertainty in the estimate of the point in time of the era boundary
Attribute tagged values
Tag Value
nillable True
sequenceNumber 8
 

Outbound Associations

Name Type Multiplicity From Class Notes
nextEra TimeOrdinalEra 1..* TimeOrdinalEraBoundary
Association tagged values
Tag Value
nillable True
sequenceNumber 2
previousEra TimeOrdinalEra 1..* TimeOrdinalEraBoundary
Association tagged values
Tag Value
sequenceNumber 3
nillable True
stratotype StratigraphicPoint 1 GeochronologicBoundary Several StratigraphicPoints may be associated with a boundary, but only one may have GSSP ratified status. The others are proposed equivalent.
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 xlinks
noPropertyType false Values: true | false
Default: false
Description: suppress automatic creation of *PropertyType complexType
 

GML-conformant XML Implementation Details

<xs:element xmlns:xs="http://www.w3.org/2001/XMLSchema" name="GeochronologicBoundary" substitutionGroup="gsmltrs:TimeOrdinalEraBoundary" type="gsmlgt:GeochronologicBoundaryType">

    <xs:annotation>

        <xs:documentation>A boundary between two geochronologic time periods</xs:documentation>

    </xs:annotation>

</xs:element>
<xs:complexType xmlns:xs="http://www.w3.org/2001/XMLSchema" name="GeochronologicBoundaryType">

    <xs:complexContent>

        <xs:extension base="gsmltrs:TimeOrdinalEraBoundaryType">

            <xs:sequence>

                <xs:element name="stratotype" type="gsmlgt:StratigraphicPointPropertyType" nillable="true"/>

            </xs:sequence>

        </xs:extension>

    </xs:complexContent>

</xs:complexType>
<xs:complexType xmlns:xs="http://www.w3.org/2001/XMLSchema" name="GeochronologicBoundaryPropertyType">

    <xs:sequence minOccurs="0">

        <xs:element ref="gsmlgt:GeochronologicBoundary"/>

    </xs:sequence>

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

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

</xs:complexType>