Back Valanginium Afrikaans الفالانجيني Arabic Valanxinianu AST Valanginij BS Valanginià Catalan Valangin Czech Valanginium German Βαλανζίνιο Greek Valanginio Esperanto Valanginiense Spanish
| Valanginian | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chronology | |||||||||
| |||||||||
| Etymology | |||||||||
| Name formality | Formal | ||||||||
| Usage information | |||||||||
| Celestial body | Earth | ||||||||
| Regional usage | Global (ICS) | ||||||||
| Time scale(s) used | ICS Time Scale | ||||||||
| Definition | |||||||||
| Chronological unit | Age | ||||||||
| Stratigraphic unit | Stage | ||||||||
| Time span formality | Formal | ||||||||
| Lower boundary definition | Not formally defined | ||||||||
| Lower boundary definition candidates | FAD of the Calpionellid Calpionellites darderi | ||||||||
| Lower boundary GSSP candidate section(s) | |||||||||
| Upper boundary definition | FAD of the Ammonite genus Acanthodiscus | ||||||||
| Upper boundary GSSP | La Charce, Drôme, France 44°28′10″N 5°26′37″E / 44.4694°N 5.4437°E | ||||||||
| Upper GSSP ratified | December 2019[2] | ||||||||
In the geologic timescale, the Valanginian is an age or stage of the Early or Lower Cretaceous. It spans between 139.8 ± 3.0 Ma and 132.6 ± 2.0 Ma (million years ago). The Valanginian Stage succeeds the Berriasian Stage of the Lower Cretaceous and precedes the Hauterivian Stage of the Lower Cretaceous.[3]
- ^ International Commission on Stratigraphy. "ICS - Chart/Time Scale". www.stratigraphy.org.
- ^ Mutterlose, Jörg; Rawson, Peter; Reboulet, Stéphane; Baudin, François; Bulot, Luc; Emmanuel, Laurent; Gardin, Silvia; Martinez, Mathieu; Renard, Maurice (September 2020). "The Global Boundary Stratotype Section and Point (GSSP) for the base of the Hauterivian Stage (Lower Cretaceous), La Charce, southeast France". Episodes. 44 (2): 129–150. doi:10.18814/epiiugs/2020/020072. Retrieved 24 December 2020.
- ^ See Gradstein et al. (2004) for a detailed geologic timescale
© MMXXIII Rich X Search. We shall prevail. All rights reserved. Rich X Search