Geological Survey of Sweden (SGU) |
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Geological Survey of Sweden (SGU) (unverified)
Contact information:
Customer Services
Geological Survey of Sweden (SGU)
SE-751 28 Uppsala, Sweden
Phone: +4618179000
The dataset GE.Bedrock 1:1 million covering the whole of Sweden is available in this OGC WFS service. The service delivers data compliant to the Inspire theme Geology encoded as GeoSciML 4.0. FeatureTypes included are MappedFeature and GeologicUnit. MappedFeatures (geometry) are specified by GeologicUnits containing information on lithology and age. The underlying dataset GE.Bedrock 1:1 million also contains information on shear displacement structures like faults that are not included in this service.
Geologic Unit (gsmlb:GeologicUnit)
Operationally, the GeologicUnit element is a container used to associate geologic properties with some mapped occurrence (through GeologicFeature.occurrence -> MappedFeature link), or with a geologic unit ControlledConcept in a vocabulary (through the GeologicUnit.classifier ->ControlledConcept link). Conceptually, may represent a body of material in the Earth whose complete and precise extent is inferred to exist (NADM GeologicUnit, Stratigraphic unit in sense of NACSN or International Stratigraphic Code), or a classifier used to characterize parts of the Earth (e.g. lithologic map unit like 'granitic rock' or 'alluvial deposit', surficial units like 'till' or 'old alluvium'). Spatial properties are only available through association with a MappedFeature. Includes both formal units (i.e. formally adopted and named in the official lexicon) and informal units (i.e. named but not promoted to the lexicon) and unnamed units (i.e. recognisable and described and delineable in the field but not otherwise formalised).
Mapped Feature (gsmlb:MappedFeature)
A MappedFeature is part of a geological interpretation. It provides a link between a notional feature (description package) and one spatial representation of it, or part of it. (Exposures, Surface Traces and Intercepts, etc) * the specific bounded occurrence, such as an outcrop or map polygon * the Mapped Feature carries a geometry or shape - the association with a Geologic Feature (legend item) provides specification of all the other descriptors - the association with a Sampling Feature provides the context and dimensionality A Mapped Feature is always associated with some sampling feature - e.g. a mapping surface, a section, a Borehole (see BoreHolesAndObservation) etc. As noted on the diagram, if the associated sampling feature is a Borehole, then the shape associated with the MappedFeature will usually be either a point or an interval. This reconciles the 2-D ("map", section) and 1-D (borehole, traverse) viewpoints in a common abstraction.
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