Class <<DataType>> MetamorphicDescription

MetamorphicDescription describes the character of metamorphism applied to a CompoundMaterial or GeologicUnit using one or more properties including estimated intensity (grade; eg high grade, low grade), characteristic metamorphic mineral assemblages (facies; eg, greenschist, amphibolite), peak P-T estimates, and protolith material if known.

Local Subclasses: (none)

Attributes

Name Type Bounds From Class Notes
metamorphicFacies Category 1..* MetamorphicDescription A description of characteristic mineral assemblages indicative of certain metamorphic P-T conditions. Examples include Barrovian metasedimentary zones (eg: biotite facies, kyanite facies) or assemblages developed in rocks of more mafic composition (eg: greenschist facies, amphibolite facies).
Attribute tagged values
Tag Value
nillable True
sequenceNumber 1
metamorphicGrade Category 1..1 MetamorphicDescription A term to indicate the intensity or rank of metamorphism applied to an EarthMaterial (eg: high metamorphic grade, low metamorphic grade)
Indicates in a general way the P-T environment in which the metamorphism took place. Determination of metamorphic grade is based on mineral assemblages (ie, facies) present in a rock that are interpreted to have crystallized in equilibrium during a particular metamorphic event.
Attribute tagged values
Tag Value
nillable True
sequenceNumber 2
peakPressureValue Quantity 1..1 MetamorphicDescription A numerical value to indicate the estimated pressure at peak metamorphic conditions.
Attribute tagged values
Tag Value
nillable True
sequenceNumber 3
peakTemperatureValue Quantity 1..1 MetamorphicDescription A numerical value to indicate the estimated temperature at peak metamorphic conditions.
Attribute tagged values
Tag Value
nillable True
sequenceNumber 4
protolithLithology EarthMaterial 1..* MetamorphicDescription An interpretation of the EarthMaterial that constituted the pre-metamorphic lithology for this metamorphosed CompoundMaterial.
Attribute tagged values
Tag Value
nillable True
sequenceNumber 5
 

Outbound Associations

Name Type Multiplicity From Class Notes
metamorphicEvent GeologicEvent 1 MetamorphicDescription To denote the age, environment and process associated with a particular metamorphic assemblage in a GeologicUnit
Association tagged values
Tag Value
sequenceNumber 6
nillable True
 

Constraints

Constraint Type Status Weight
metamorphicFacies is not null or metamorphicGrade is not null Invariant Approved 0,00
 

Tagged values

Tag Value Notes
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="MetamorphicDescription" type="gsmlem:MetamorphicDescriptionType" substitutionGroup="gml:AbstractObject">

    <xs:annotation>

        <xs:documentation>MetamorphicDescription describes the character of metamorphism applied to a CompoundMaterial or GeologicUnit using one or more properties including estimated intensity (grade; eg high grade, low grade), characteristic metamorphic mineral assemblages (facies; eg, greenschist, amphibolite), peak P-T estimates, and protolith material if known.</xs:documentation>

    </xs:annotation>

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

    <xs:sequence>

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

            <xs:annotation>

                <xs:documentation>A description of characteristic mineral assemblages indicative of certain metamorphic P-T conditions. Examples include Barrovian metasedimentary zones (eg: biotite facies, kyanite facies) or assemblages developed in rocks of more mafic composition (eg: greenschist facies, amphibolite facies).</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="metamorphicGrade" nillable="true">

            <xs:annotation>

                <xs:documentation>A term to indicate the intensity or rank of metamorphism applied to an EarthMaterial (eg: high metamorphic grade, low metamorphic grade).  Indicates in a general way the P-T environment in which the metamorphism took place. Determination of metamorphic grade is based on mineral assemblages (ie, facies) present in a rock that are interpreted to have crystallized in equilibrium during a particular metamorphic event.</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="peakPressureValue" nillable="true">

            <xs:annotation>

                <xs:documentation>A numerical value to indicate the estimated pressure at peak metamorphic conditions.</xs:documentation>

            </xs:annotation>

            <xs:complexType>

                <xs:complexContent>

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

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

                    </xs:extension>

                </xs:complexContent>

            </xs:complexType>

        </xs:element>

        <xs:element name="peakTemperatureValue" nillable="true">

            <xs:annotation>

                <xs:documentation>A numerical value to indicate the estimated temperature at peak metamorphic conditions.</xs:documentation>

            </xs:annotation>

            <xs:complexType>

                <xs:complexContent>

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

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

                    </xs:extension>

                </xs:complexContent>

            </xs:complexType>

        </xs:element>

        <xs:element name="protolithLithology" type="gsmlem:EarthMaterialPropertyType" nillable="true" minOccurs="1" maxOccurs="unbounded">

            <xs:annotation>

                <xs:documentation>An interpretation of the EarthMaterial that constituted the pre-metamorphic lithology for this metamorphosed CompoundMaterial.</xs:documentation>

            </xs:annotation>

        </xs:element>

        <xs:element name="metamorphicEvent" type="gsmlga:GeologicEventPropertyType" nillable="true">

            <xs:annotation>

                <xs:documentation>To denote the age, environment and process associated with a particular metamorphic assemblage in a GeologicUnit</xs:documentation>

            </xs:annotation>

        </xs:element>

    </xs:sequence>

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

    <xs:sequence>

        <xs:element ref="gsmlem:MetamorphicDescription"/>

    </xs:sequence>

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

</xs:complexType>