Llanvirn Series
type: Concept
rank: Series
maximum age in millions of years before present: 4.68e+02
minimum age in millions of years before present: 4.582e+02
Source: Geochronology Division
Status: stable
broader: Ordovician Period
definition: Llanvirn Series is the third of five series in the British regional Ordovician stratigraphic scheme. It is preceded by the Arenig Series and succeeded by the Caradoc Series (Geologic Time Scale 2020, fig. 20.12).
is in scheme: Geochronology Division
narrower: Abereiddian Stage
narrower: Llandeilian Stage
notation: OE
link: /v/vocab/gchrnlgy:Division/Division:OE

Geochronology Rank
definition: Dictionary to constrain ranks of geochronological intervals used in Geochronology/Division (source table DIC_GEOCHRON). E.g. Eon; Era; Period; Epoch; Age.

rank

maximum age in millions of years before present

minimum age in millions of years before present

Description
description: Description may include but is not limited to: an abstract, a table of contents, a graphical representation, or a free-text account of the resource.

Identifier
description: Recommended practice is to identify the resource by means of a string conforming to an identification system. Examples include International Standard Book Number (ISBN), Digital Object Identifier (DOI), and Uniform Resource Name (URN). Persistent identifiers should be provided as HTTP URIs.

Source
description: This property is intended to be used with non-literal values. The described resource may be derived from the related resource in whole or in part. Best practice is to identify the related resource by means of a URI or a string conforming to a formal identification system.

Status

Type

label

seeAlso

has broader
definition: Relates a concept to a concept that is more general in meaning.

definition
definition: A statement or formal explanation of the meaning of a concept.

is in scheme
definition: Relates a resource (for example a concept) to a concept scheme in which it is included.

has narrower
definition: Relates a concept to a concept that is more specific in meaning.

notation
definition: A notation, also known as classification code, is a string of characters such as "T58.5" or "303.4833" used to uniquely identify a concept within the scope of a given concept scheme.

preferred label
definition: The preferred lexical label for a resource, in a given language.

Registry Status Vocabulary
definition: This vocabulary is a re-published and only marginally changed version of the Registry Ontology's (http://epimorphics.com/public/vocabulary/Registry.html) *Status* vocabulary (online in RDF: http://purl.org/linked-data/registry). The only real change to content has been the addition of the term `unstable`. This re-publication has been performed to allow the IRIs of each vocab term (skos:Concept) to resolve to both human-readable and machine-readable forms of content (HTML and RDF), using HTTP content negotiation. Note that just like the original form of this vocabulary, while it is a SKOS vocabulary implemented as a single skos:ConceptScheme, it is also an OWL Ontology and that each *Status* is both a skos:Concept and a reg:Status individual.

link

color

Ordovician Period
Status: stable
definition: Ordovician Period is the second of the six periods of the Paleozoic Era. It is preceded by the Cambrian Period and succeeded by the Silurian Period (Geologic Time Scale 2020, figs. 2.1, 20.1; https://timescalefoundation.org/).
link: /v/vocab/gchrnlgy:Division/Division:O
color: #009270

Abereiddian Stage
Status: stable
definition: Abereiddian Stage is a stage in the British regional Ordovician stratigraphic scheme. It is the first of two stages of the Llanvirn Series. It is preceded by the Fennian Stage (Arenig Series) and succeeded by the Llandeilian Stage (Geologic Time Scale 2020, fig. 20.12).
link: /v/vocab/gchrnlgy:Division/Division:O2

Llandeilian Stage
Status: stable
definition: Llandeilian Stage is a stage in the British regional Ordovician stratigraphic scheme. It is the second of two stages of the Llanvirn Series. It is preceded by the Abereiddian Stage and succeeded by the Aurelucian Stage (Caradoc Series) (Geologic Time Scale 2020, fig. 20.12).
link: /v/vocab/gchrnlgy:Division/Division:O3

Series
Status: stable
definition: Series is the chronostratigraphical equivalent to Epoch.
link: /v/vocab/gchrnlgy:Rank/Rank:SERIES

Geochronology Division
Status: stable
definition: Divisions of geological time from source table DIC_GEOCHRON. The BGS Geochronology Dataset is based on The Geologic Time Scale 2012 by F M Gradstein, J G Ogg, M Schmitz and G Ogg (2012), with additions. The result is a composite geological time scale that will be updated as improved timescales become available.
link: /v/vocab/gchrnlgy:Division

Concept
definition: An idea or notion; a unit of thought.

stable
definition: An entry that is seen as having a reasonable measure of stability, may be used to mark the full adoption of a previously 'experimental' entry.
link: /v/vocab/defn:reg-statuses/rstatus:stable
color: #2e8c09