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

qx8:-P6Q46VTX-B
  skos:prefLabel "Paleo-proterozoic"@en, "Paléo-protérozoïque"@fr ;
  a skos:Concept ;
  skos:narrower qx8:-L63LG5HQ-D .

qx8: a skos:ConceptScheme .
qx8:-L63LG5HQ-D
  skos:definition "Sur l'échelle des temps géologiques, le Rhyacien est un système géologique intermédiaire de l'ère du Paléoprotérozoïque, qui s'étend de -2 300 à -2 050 Ma. Rivière [de lave], du grec, rhyax (« ruisseau, rivière »). Le complexe du Bushveld et d'autres roches plutoniques similaires se sont formées à cette période. Par ailleurs, la glaciation huronienne qui a débuté pendant le Sidérien se poursuit pendant la plus grande partie du Rhyacien, jusqu'en -2 100 Ma. Apparition des eucaryotes (Eukaryota). Les plus anciens fossiles d'eucaryotes multicellulaires connus ont été mis au jour dans des sédiments du Rhyacien. Ils forment le Groupe fossile de Franceville, vieux de 2 100 Ma. (Adapté de : <a href=\"https://fr.wikipedia.org/wiki/Rhyacien\">https://fr.wikipedia.org/wiki/Rhyacien</a>)"@fr, "The Rhyacian Period (Ancient Greek: romanized: rhýax, meaning \"stream of lava\") is the second geologic period in the Paleoproterozoic Era and lasted from 2300 Mya to 2050 Mya (million years ago). Instead of being based on stratigraphy, these dates are defined chronometrically. The Bushveld Igneous Complex and some other similar intrusions[specify] formed during this period. The Huronian (Makganyene) global glaciation began at the start of the Rhyacian and lasted 100 million years. It lasted about 80% of this period. For the time interval from 2250 Ma to 2060 Ma, an alternative period based on stratigraphy rather than chronometry, named either the Jatulian or the Eukaryian, was suggested in the geological timescale review 2012 but as of March 2020, this has not yet been officially adopted by the IUGS. The term Jatulian is, however, used in the regional stratigraphy of the Paleoproterozoic rocks of Fennoscandia. This is when the eukaryotes are thought to have originated from the symbiosis between asgardarchaea and alphaproteobacteria, as well as the sexual reproduction found within the eukaryotes only, thus the alternative name Eukaryian. (Adapted from: <a href=\"https://en.wikipedia.org/wiki/Rhyacian\">https://en.wikipedia.org/wiki/Rhyacian</a>)"@en ;
  a skos:Concept ;
  skos:inScheme qx8: ;
  skos:broader qx8:-P6Q46VTX-B ;
  skos:prefLabel "Rhyacian"@en, "Rhyacien"@fr ;
  skos:exactMatch <https://fr.wikipedia.org/wiki/Rhyacien>, <https://en.wikipedia.org/wiki/Rhyacian> .