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Item talk:Q161378: Difference between revisions
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= Geologic Time Interval = | |||
The GeoKB representation of geologic time generally conforms with the Geoscience Ontology's representation but incorporates only select details from that formal ontology and focuses some attention on ensuring that the GeoKB accurately represents the [https://pubs.usgs.gov/fs/2018/3054/fs20183054.pdf divisions of geologic time] as accepted by the USGS and required for USGS authors. The schema includes a number of conventions: | The GeoKB representation of geologic time generally conforms with the Geoscience Ontology's representation but incorporates only select details from that formal ontology and focuses some attention on ensuring that the GeoKB accurately represents the [https://pubs.usgs.gov/fs/2018/3054/fs20183054.pdf divisions of geologic time] as accepted by the USGS and required for USGS authors. The schema includes a number of conventions: | ||
* Entities are instances of one of the divisions of geologic time (see below) that are classified according to the higher level common core ontologies approach used in the Geoscience Ontology | * Entities are instances of one of the divisions of geologic time (see below) that are classified according to the higher level common core ontologies approach used in the Geoscience Ontology | ||
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* The GeoKB deliberately excludes content on age estimates and the differentiating characteristics of time interval boundaries as the domain of underlying vocabularies and scientific sources. We may elect to incorporate some of this information along with useful comments and original source information into item discussion pages at some point if it proves useful as a local reference. | * The GeoKB deliberately excludes content on age estimates and the differentiating characteristics of time interval boundaries as the domain of underlying vocabularies and scientific sources. We may elect to incorporate some of this information along with useful comments and original source information into item discussion pages at some point if it proves useful as a local reference. | ||
= USGS Divisions of Geologic Time = | == USGS Divisions of Geologic Time == | ||
USGS-authored publications are generally required to only use and refer to divisions of geologic time described in the latest publication describing the geologic time chart according to the USGS Geologic Names Committee. In order to account for this need, the GeoKB incorporates a "knowledge source" reference statement on the instantiation (type classification) claims of time interval entities that trace to the latest publication. The following query can be used to return these entities along with their labels, descriptions, and classification but without other details introduced by either the Geoscience Ontology or the International Chronostratigraphic Chart. | USGS-authored publications are generally required to only use and refer to divisions of geologic time described in the latest publication describing the geologic time chart according to the USGS Geologic Names Committee. In order to account for this need, the GeoKB incorporates a "knowledge source" reference statement on the instantiation (type classification) claims of time interval entities that trace to the latest publication. The following query can be used to return these entities along with their labels, descriptions, and classification but without other details introduced by either the Geoscience Ontology or the International Chronostratigraphic Chart. | ||
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</sparql> | </sparql> | ||
= | == Type Classification for Geologic Time == | ||
<sparql tryit="1"> | <sparql tryit="1"> | ||
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</sparql> | </sparql> | ||
= Full Geologic Time Graph = | == Full Geologic Time Graph == | ||
The following query pulls all geologic time intervals regardless of source but includes the reference items on the instantiation claims for use in filtering. It includes the next and previous interval claims along with the time contains claims pulled from the Geoscience Ontology. No grouping is done in the claim in order for the graph connecting all entities to be functional. | The following query pulls all geologic time intervals regardless of source but includes the reference items on the instantiation claims for use in filtering. It includes the next and previous interval claims along with the time contains claims pulled from the Geoscience Ontology. No grouping is done in the claim in order for the graph connecting all entities to be functional. | ||
