Class <<FeatureType>> GeologicEvent (extends GeologicFeature )

<xs:element xmlns:xs="http://www.w3.org/2001/XMLSchema" name="GeologicEvent" substitutionGroup="gsml:GeologicFeature" type="gsmlga:GeologicEventType">

    <xs:annotation>

        <xs:documentation>An identifiable event during which one or more geological processes act to modify geological entities. A GeologicEvent must have a specified geologic age and may have specified environments and processes. An example might be a cratonic uplift event during which erosion, sedimentation, and volcanism all take place.

				

				The numeric or named age attributes of a particular geological event are expressed in terms of years before present (absolute age), referred to the geological time scale, or by comparison with other geological events or features (relative named age). A geologic event age can represent an instant in time or an interval of time.</xs:documentation>

    </xs:annotation>

</xs:element>

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

    <xs:complexContent>

        <xs:extension base="gsml:GeologicFeatureType">

            <xs:sequence>

                <xs:element maxOccurs="unbounded" minOccurs="1" name="eventProcess" nillable="true" type="gml:ReferenceType">

                    <xs:annotation>

                        <xs:appinfo>

                            <gml:targetElement xmlns:gml="http://www.opengis.net/gml/3.2">gsmlga:EventProcessTerm</gml:targetElement>

                        </xs:appinfo>

                        <xs:documentation>The eventProcess specifies the process or processes that occurred during the event. Examples include deposition, extrusion, intrusion, cooling.</xs:documentation>

                    </xs:annotation>

                </xs:element>

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

                    <xs:annotation>

                        <xs:documentation>The numericAgeDate attribute is the age of a particular geological event or feature expressed in terms of years before present (1950), using NumericAgeRange. This datatype allows a younger and older age boundary to express an interval, and a reporting age, which is a single numeric age to report for applications that can not use a numeric range. Age in years before present is an estimated time durations based on interpretation of isotopic analyses of EarthMaterial (some other methods are used for geologically young materials).

Numeric age range uses GeologicDateEstimate to allow incorporation of various uncertainty measures using ISO19115 DataQuality elements, and binding with observation features to report details of date determination measurement.</xs:documentation>

                    </xs:annotation>

                    <xs:complexType>

                        <xs:complexContent>

                            <xs:extension base="gsmlga:NumericAgeRangePropertyType">

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

                            </xs:extension>

                        </xs:complexContent>

                    </xs:complexType>

                </xs:element>

                <xs:element name="olderNamedAge" nillable="true" type="gml:ReferenceType">

                    <xs:annotation>

                        <xs:appinfo>

                            <gml:targetElement xmlns:gml="http://www.opengis.net/gml/3.2">gsmlgt:GeochronologicEra</gml:targetElement>

                        </xs:appinfo>

                        <xs:documentation>Older boundary of age of event expressed using a geochronologic era defined according to a geologic time scale per GeologicTime schema</xs:documentation>

                    </xs:annotation>

                </xs:element>

                <xs:element name="youngerNamedAge" nillable="true" type="gml:ReferenceType">

                    <xs:annotation>

                        <xs:appinfo>

                            <gml:targetElement xmlns:gml="http://www.opengis.net/gml/3.2">gsmlgt:GeochronologicEra</gml:targetElement>

                        </xs:appinfo>

                        <xs:documentation>Younger boundary of age of event expressed using a geochronologic era defined according to a geologic time scale per GeologicTime schema</xs:documentation>

                    </xs:annotation>

                </xs:element>

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

                    <xs:annotation>

                        <xs:documentation>The physical setting within which a GeologicEvent takes place.  GeologicEnvironment is construed broadly to include physical settings on the Earth surface specified by climate, tectonics, physiography or geography, and settings in the Earth?s interior specified by pressure, temperature, chemical environment, or tectonics.</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="prototype" type="gsmlgt:StratigraphicPointPropertyType" nillable="true">

                    <xs:annotation>

                        <xs:documentation>Prototype association to StratigraphicPoint may only be used when GeologicEvent is a stratigraphic event</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="GeologicEventPropertyType">

    <xs:sequence minOccurs="0">

        <xs:element ref="gsmlga:GeologicEvent"/>

    </xs:sequence>

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

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

</xs:complexType>