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Berriasian
Sign in to saveIn the geological timescale, the Berriasian is an age or stage of the Early Cretaceous. It is the oldest subdivision in the entire Cretaceous. It has been estimated to span the time between 143.1 ± 0.6 and 137.05 ± 0.2 Ma (million years ago). The Berriasian succeeds the Tithonian (part of the Jurassic) and precedes the Valanginian.
Key facts
- Geologic timespan.name
- Berriasian
- Geologic timespan.color
- Berriasian
- Geologic timespan.time_start
- 143.1
- Geologic timespan.time_start_uncertainty
- 0.6
- Geologic timespan.time_end
- 137.05
- Geologic timespan.time_end_uncertainty
- 0.2
- Geologic timespan.timeline
- Cretaceous
- 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
- Undefined
- Geologic timespan.lower_def_candidates
- Magnetic—base of Chron M18r Base of Calpionellid zone B FAD of Ammonite Berriasella jacobi
- Geologic timespan.upper_boundary_def
- FAD of Thurmanniceras pertransiens (Ammonite)
- Geologic timespan.upper_gssp_location
- Montbrun-les-Bains, Drôme, France
via Wikipedia infobox
Article
8 sectionsContents
- Stratigraphic definition
- Climate
- Slivnitsa carbonate platform
- Index fossils
- References
- Notes
- Literature
- External links
In the geological timescale, the Berriasian is an age or stage of the Early Cretaceous. It is the oldest subdivision in the entire Cretaceous. It has been estimated to span the time between 143.1 ± 0.6 and 137.05 ± 0.2 Ma (million years ago). The Berriasian succeeds the Tithonian (part of the Jurassic) and precedes the Valanginian.
==Stratigraphic definition== The Berriasian Stage was introduced in scientific literature by Henri Coquand in 1869. It is named after the village of Berrias in the Ardèche department of France. The largely non-marine English Purbeck Formation is in part of Berriasian age. The first rocks to be described of this age were the beds of the English Purbeck Formation, named as the Purbeckian by Alexandre Brongniart in 1829 following description by Henry De la Beche, William Buckland, Thomas Webster and William Henry Fitton.