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Bathonian

In the geologic timescale the Bathonian is an age and stage of the Middle Jurassic. It lasted from approximately 168.2 ±1.2 Ma to around 165.3 ±1.1 Ma (million years ago). The Bathonian Age succeeds the Bajocian Age and precedes the Callovian Age.

Key facts

Geologic timespan.name: Bathonian
Geologic timespan.color: Bathonian
Geologic timespan.time_start: 168.2
Geologic timespan.time_start_uncertainty: 1.2
Geologic timespan.time_end: 165.3
Geologic timespan.time_end_uncertainty: 1.1
Geologic timespan.timeline: Jurassic
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 Ammonite Gonolkites convergen
Geologic timespan.lower_gssp_location: Ravin du Bès, Bas-Auran, Alpes-de-Haute-Provence, France
Geologic timespan.lower_gssp_accept_date: July 2008
Geologic timespan.upper_boundary_def: FAD of the Ammonite genus Kepplerites

via Wikipedia infobox

Article

5 sections

Contents

Stratigraphic definitions
References
Notes
Literature
External links

==Stratigraphic definitions== The Bathonian Stage takes its name from Bath, a spa town in England built on Jurassic limestone (the Latinized form of the town name is Bathonium). The name was introduced in scientific literature by Belgian geologist d'Omalius d'Halloy in 1843. The original type locality was located near Bath. The French palaeontologist Alcide d'Orbigny was in 1852 the first to define the exact length of the stage.