Aquiclude - Spatial object type

Definition: An impermeable body of rock or stratum of sediment that acts as a barrier to the flow of groundwater.

Description: A formation which, although porous and capable of absorbing water slowly, will not transmit water fast enough to furnish an appreciable supply for a well or spring. Aquicludes are characterized by very low values of "leakage" (the ratio of vertical Hydraulic Conductivity to thickness), so that they transmit only minor inter-aquifer flow and also have very low rates of yield from compressible storage. Therefore, they constitute boundaries of aquifer flow systems.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Hydrogeology - [INSPIRE Application schema Hydrogeology]

Subtype of: Hydrogeological Unit


Attributes

Definition: The description of the HydrogeologicalUnit

Multiplicity: 1

Stereotypes: voidable

Valuetype: PT_FreeText

Definition: The approximate depth of the HydrogeologicalUnit occurrence.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: The approximate thickness of the HydrogeologicalUnit.

Multiplicity: 1

Stereotypes: voidable

Valuetype: QuantityValue

Definition: Date and time at which this version of the spatial object was inserted or changed in the spatial data set.

Multiplicity: 1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: Date and time at which this version of the spatial object was superseded or retired in the spatial data set.

Multiplicity: 0...1

Stereotypes: lifeCycleInfo - voidable

Valuetype: DateTime

Definition: The type of geological the unit.

Description: Logical constraints of definition of unit and valid property cardinalities should be contained in the definition.

Multiplicity: 1

Valuetype: GeologicUnitTypeValue

Definition: External object identifier of the spatial object.

Multiplicity: 1

Valuetype: Identifier

Definition: The name of the geologic feature.

Description: EXAMPLE: a lithostratigraphic unit, mineral occurrence, or major fault. Not all GeologicFeatures will have names, for example minor faults.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString


Associated objects - Optional

Definition: A configuration of matter in the Earth based on describable inhomogeneity, pattern, or fracture in an earth material.

Description: The identity of a GeologicStructure is independent of the material that is the substrate for the structure.

Multiplicity: 0..*

Name of the association: geologic Structure

Association definition: Relates one or many HydrogeologicalUnit(s) to a GeologicStructure.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Geology - [INSPIRE Application schema Geology]

Supertype of: Fold ShearDisplacementStructure

Subtype of: GeologicFeature


Attributes

Definition: External object identifier of the spatial object.

Multiplicity: 1

Valuetype: Identifier

Definition: The name of the geologic feature.

Description: EXAMPLE: a lithostratigraphic unit, mineral occurrence, or major fault. Not all GeologicFeatures will have names, for example minor faults.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString


Associated objects - Mandatory

Definition: An identifiable event during which one or more geological processes act to modify geological entities.

Description: A GeologicEvent should have a specified geologic age and process, and may have a specified environment. An example might be a cratonic uplift event during which erosion, sedimentation, and volcanism all take place. A GeologicEvent age can represent an instant in time or an interval of time.

Multiplicity: 1..*

Name of the association: geologic History

Association definition: An association that relates one or more geologic events to a geologic feature to describe their age or geologic history.

INSPIRE Data Theme: Geology - [INSPIRE Data Theme Geology]

INSPIRE Application schema: Geology - [INSPIRE Application schema Geology]


Attributes

Definition: The name of the Geologic Event.

Description: Only major Geologic Events, such as orogenies, are likely to have names.

Multiplicity: 1

Stereotypes: voidable

Valuetype: CharacterString

Definition: The physical setting within which the geologic event takes place.

Description: 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.

Multiplicity: 1

Stereotypes: voidable

Valuetype: EventEnvironmentValue

Definition: The process or processes that occurred during the geologic event.

Description: EXAMPLE: deposition, extrusion, intrusion, cooling.

Multiplicity: 1...*

Stereotypes: voidable

Valuetype: EventProcessValue

Definition: Older boundary of the age of the event.

Description: This is expressed using a geochronologic era defined in a vocabulary of recognised units, such as those of the International Commission on Stratigraphy (ICS) Stratigraphic Chart.

Multiplicity: 1

Stereotypes: voidable

Valuetype: GeochronologicEraValue

Definition: Younger boundary of the age of the event.

Description: This is expressed using a geochronologic era defined in a vocabulary of recognised units, such as those of the International Commission on Stratigraphy (ICS) Stratigraphic Chart.

Multiplicity: 1

Stereotypes: voidable

Valuetype: GeochronologicEraValue


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