Aalenian (174.1 +/-1.0 Ma)

Representation and status

Index
aal
Color CMYK
40 / 0 / 5 / 0
Color RGB
R: 154 G: 217 B: 221
Rank
chronostratigraphic Stage
Validity
Unit is in Use
Status
valid formal name
Status discussion

Nomenclature

Deutsch
Aalénien (CH) (DE/AT: Aalenium)
Français
Aalénien
Italiano
Aaleniano
English
Aalenian (174.1 +/-1.0 Ma)
Origin of the Name

Named after the town of Aalen (Germany), Baden-Württemberg

Historical Variants

Aalenium (Mayer-Eymar 1864, Mayer-Eymar 1874), Aalenien (Studer 1872), Aalénien (Mayer-Eymar 1888, Mouterde et al. 1956)

Hierarchy and sequence

Lower boundary

Base defined by the first appearance of the ammonite species Leioceras opalinum (Reinecke 1818).

Age

Age at top
  • Aalenian
Age at base
  • Aalenian

Geography

Type area
Schwäbische Alb (Baden-Württemberg, S Germany)

References

Definition
Mayer-Eymar Ch. (1864) : Tableau de synchronisation des terrains jurassiques.
Definition
Mouterde R., ... (1956) : Lias. Lexique stratigraphique international, vol. 1 Europe, Fasc. 4a IV
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