@prefix qx8: <http://data.loterre.fr/ark:/67375/QX8> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

qx8:-NWTP7BM6-Z
  skos:prefLabel "Crétacé inférieur"@fr, "Lower Cretaceous"@en ;
  a skos:Concept ;
  skos:narrower qx8:-R71L9V6M-Z .

qx8: a skos:ConceptScheme .
qx8:-R71L9V6M-Z
  skos:exactMatch <https://en.wikipedia.org/wiki/Aptian>, <https://fr.wikipedia.org/wiki/Aptien> ;
  skos:broader qx8:-NWTP7BM6-Z ;
  a skos:Concept ;
  skos:inScheme qx8: ;
  skos:prefLabel "Aptian"@en, "Aptien"@fr ;
  skos:definition "The Aptian is an age in the geologic timescale or a stage in the stratigraphic column. It is a subdivision of the Early or Lower Cretaceous Epoch or Series and encompasses the time from 121.4 ± 1.0 Ma to 113.0 ± 1.0 Ma (million years ago), approximately. The Aptian succeeds the Barremian and precedes the Albian, all part of the Lower/Early Cretaceous The Aptian partly overlaps the upper part of the Western European Urgonian Stage. The Selli Event, also known as OAE1a, was one of two oceanic anoxic events in the Cretaceous Period, which occurred around 120 Ma and lasted approximately 1 to 1.3 million years, being marked by enhanced silicate weathering, as well as ocean acidification. The Aptian extinction was a minor extinction event hypothesized to have occurred around 116 to 117 Ma. The Aptian was named after the small city of Apt in the Provence region of France. The original type locality is in the vicinity of Apt. The Aptian was introduced in scientific literature by French palaeontologist Alcide d'Orbigny in 1840. The base of the Aptian Stage is laid at magnetic anomaly M0r. A global reference profile for the base (a GSSP) had in 2009 not yet been appointed. The top of the Aptian (the base of the Albian) is at the first appearance of coccolithophore species Praediscosphaera columnata in the stratigraphic record. (Adapted from: <a href=\"https://en.wikipedia.org/wiki/Aptian\">https://en.wikipedia.org/wiki/Aptian</a>)"@en, "L'Aptien est l'avant-dernier étage stratigraphique du Crétacé inférieur. Il s'étend de ≃ -125,0 à ≃ −113,0 Ma, succédant au Barrémien et précédant l'Albien. L'Aptien a été créé par Alcide d'Orbigny en 1840. Il doit son nom à la ville d'Apt dans le Vaucluse. La région stratotypique de l'Aptien se situe dans le Sud-Est de la France. L'Aptien y est localement divisé en trois sous-étages appelés (du plus ancien au plus récent) : Bédoulien, Gargasien, Clansayésien. (Adapté de : <a href=\"https://fr.wikipedia.org/wiki/Aptien\">https://fr.wikipedia.org/wiki/Aptien</a>)"@fr ;
  skos:narrower qx8:-F0W86S71-T .

qx8:-F0W86S71-T
  skos:prefLabel "Gargasien"@fr, "Gargasian"@en ;
  a skos:Concept ;
  skos:broader qx8:-R71L9V6M-Z .