Burdigalian Explained

Burdigalian
Color:Burdigalian
Time Start:20.44
Time End:15.97
Timeline:Neogene
Formerly Part Of:Tertiary Period/System
Name Formality:Formal
Celestial Body:earth
Usage:Global (ICS)
Timescales Used:ICS Time Scale
Chrono Unit:Age
Strat Unit:Stage
Timespan Formality:Formal
Lower Boundary Def:Not formally defined
Lower Def Candidates:
Lower Gssp Candidates:Astronomically tuned ODP-core
Upper Boundary Def:Not formally defined
Upper Def Candidates:
  • Near top of magnetic polarity chronozone C5Cn.1n
  • Near FAD of the Planktonic Foraminiferan Praeorbulina glomerosa
Upper Gssp Candidates:

The Burdigalian is, in the geologic timescale, an age or stage in the early Miocene. It spans the time between 20.43 ± 0.05 Ma and 15.97 ± 0.05 Ma (million years ago). Preceded by the Aquitanian, the Burdigalian was the first and longest warming period of the Miocene[1] and is succeeded by the Langhian.

Stratigraphic definition

The name Burdigalian comes from Burdigala, the Latin name for the city of Bordeaux, France. The Burdigalian Stage was introduced in scientific literature by Charles Depéret in 1892.

The base of the Burdigalian is at the first appearance of foram species Globigerinoides altiaperturus and the top of magnetic chronozone C6An., an official GSSP for the Burdigalian had not yet been assigned.

The top of the Burdigalian (the base of the Langhian) is defined by the first appearance of foram species Praeorbulina glomerosa and is also coeval with the top of magnetic chronozone C5Cn.1n.

Paleontology

Famous Burdigalian palaeontologic localities include the Turritellenplatte of Ermingen in Germany and the Dominican amber deposits of Hispaniola.

Possible human evolutionary ancestors such as Victoriapithecus evolved during this time interval.

References

Literature

1892: Note sur la classification et le parallélisme du Système miocène, Bulletin de la Société Géologique de France 3(20), p. CXLV-CLVI.
2004: A Geologic Time Scale 2004, Cambridge University Press.

External links

Notes and References

  1. Edward Petuch, Ph.D. Florida Atlantic University, Department of Geosciences.Web site: FAU Department of Geosciences . 2010-05-01 . dead . https://web.archive.org/web/20100620072033/http://www.geology.fau.edu/people/petuch.html . 2010-06-20 .