Inspire revision 4711
Gyldig
An identifiable event during which one or more geological processes act to modify geological entities. A GeologicEvent must have a specified GeologicAge and may have specified environments and processes. An example might be a cratonic uplift event during which erosion, sedimentation, and volcanism all take place.
Geological history is an ordered aggregation of Geological Event objects, each of which may have an associated Geological Age, Geological Environment, and one or more Geological Process objects. Genesis typically pertains to some geological phenomenon (Geological Structure, Earth Material, Geological Unit, Fossil, etc.)
In GeoSciML 2.0 this ordering cannot be specified.
A GeologicEvent must have a specified eventAge (numericAgeDate, olderNamedAge, or youngerNamedAge), at least one eventProcess, and may have specified eventEnvironments. An example might be a cratonic uplift event during which erosion, sedimentation, and volcanism all take place. Traditionally, geologists have described the age of a feature without explicitly specifying the event or processes the age related to. The GeologicEvent package allows for explicitly linking the three, without mandating it.
The eventAge attribute is the age of a particular geological event or feature 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 age). An eventAge can represent an instant in time, an interval of time, or any combination of multiple instants or intervals. Specifications of age in years before present are based on determination of time durations based on interpretation of isotopic analyses of EarthMaterial (some other methods are used for geologically young materials). Ages referred to geological time scales are essentially based on correlation of a geological unit with a standard chronostratigraphic unit that serves as a reference. Relative ages are based on relationships between geological units such as superposition, intruded by, cross-cuts, or "contains inclusions of".
| Egenskap |
Stereotype |
Beskrivelse |
Type |
Multiplisitet |
| eventProcess |
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The eventProcess specifies the process or processes that occurred during the event. Examples include deposition, extrusion, intrusion, cooling.
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EventProcessTerm
(kodeliste)
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1..* |
| numericAgeDate |
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The numericAgeDate attribute is the age of a particular geological event or feature expressed in terms of years before present (1950), using CGI_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 StratigraphicDateEstimate to allow incorporation of various uncertainty measures using ISO19115 DataQuality elements, and binding with observation features to report details of date determination measurement.
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CGI_NumericAgeRange
(datatype)
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1..1 |
| - reportingDate |
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Single time coordinate value to report as representative for this NumericAge assignment
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StratigraphicDateEstimate
(datatype)
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1..1 |
| - olderBoundDate |
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The older bounding time coordinate in an age range
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StratigraphicDateEstimate
(datatype)
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1..1 |
| - youngerBoundDate |
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The younger bounding time coordinate in an age range
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StratigraphicDateEstimate
(datatype)
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1..1 |
| olderNamedAge |
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Older boundary of age of event expressed using a geochronologic era defined according to a geologic time scale per GeologicTime schema
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GeochronologicEra
(type)
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1..1 |
| - rank |
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GeochronologicEraRank
(kodeliste)
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1..1 |
| youngerNamedAge |
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Younger boundary of age of event expressed using a geochronologic era defined according to a geologic time scale per GeologicTime schema
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GeochronologicEra
(type)
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1..1 |
| - rank |
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GeochronologicEraRank
(kodeliste)
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1..1 |
| eventEnvironment |
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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.
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CGI_Term
(datatype)
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1..* |
| - qualifier |
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A qualifying term (eg; sometimes, common, always) used with term values. |
ValueQualifierCode
(kodeliste)
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1..1 |
| - value |
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A byReference attribute, referring to a vocabulary of terms suitable to describe a GeoSciML element.
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CodeListValue
(kodeliste)
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1..1 |
| Navn |
Beskrivelse |
| self.metadata.hierarchyLevel=(feature or dataset or series) |
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