Asselian
Sign in to saveAlso known as Asselian Stage, Asselian Age
In the geologic timescale, the Asselian is the earliest geochronologic age or lowermost chronostratigraphic stage of the Permian. It is a subdivision of the Cisuralian Epoch or Series. The Asselian lasted between and million years ago (Ma). It was preceded by the Gzhelian (the latest or uppermost subdivision in the Carboniferous) and followed by the Sakmarian.
Key facts
- Geologic timespan.name
- Asselian
- Geologic timespan.color
- Asselian
- Geologic timespan.time_start
- 298.9
- Geologic timespan.time_start_uncertainty
- 0.15
- Geologic timespan.time_end
- 293.52
- Geologic timespan.time_end_uncertainty
- 0.17
- Geologic timespan.image_map
- File:295Ma Mollweide.png
- Geologic timespan.caption_map
- Mollweide map of Earth 295 million years ago, with black outlines depicting countries in their locations
- Geologic timespan.timeline
- Permian
- Geologic timespan.name_formality
- Formal
- Geologic timespan.celestial_body
- earth
- Geologic timespan.usage
- Global (ICS)
- Geologic timespan.timescales_used
- ICS Time Scale
- Geologic timespan.chrono_unit
- Age
- Geologic timespan.strat_unit
- Stage
- Geologic timespan.timespan_formality
- Formal
- Geologic timespan.lower_boundary_def
- FAD of the Conodont Streptognathodus isolatus within the morphotype Streptognathodus wabaunsensis chronocline
- Geologic timespan.lower_gssp_location
- Aidaralash, Ural Mountains, Kazakhstan
via Wikipedia infobox
Wikidata facts
Show 3 more facts
- sRGB color hex triplet
- F0775F
- start time
- 298900000-
- end time
- 295000000-
Sources (3)
via Wikidata · CC0
~3 min read
Article
5 sectionsContents
- Stratigraphy
- Regional equivalents
- Notable formations
- References
- External links
In the geologic timescale, the Asselian is the earliest geochronologic age or lowermost chronostratigraphic stage of the Permian. It is a subdivision of the Cisuralian Epoch or Series. The Asselian lasted between and million years ago (Ma). It was preceded by the Gzhelian (the latest or uppermost subdivision in the Carboniferous) and followed by the Sakmarian.
== Stratigraphy == The Asselian Stage was introduced into scientific literature in 1954, when the Russian stratigrapher V.E. Ruzhenchev split it off from the Artinskian. At the time, the Artinskian still encompassed most of the lower Permian – its current definitions are more restricted. The Asselian is named after the Assel River in the southern Ural Mountains of Kazakhstan and Bashkortostan.
On the map
5 mapped locations