Serravallian (13.82 Ma)

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Representation and status

Color CMYK
0/0/65/0
Color RGB
R: 255 G: 255 B: 89
Rank
chronostratigraphic Stage
Validity
Unit is in Use
Status
valid formal name

Nomenclature

Deutsch
Serravallien
Français
Serravallien
Italiano
Serravalliano
English
Serravallian (13.82 Ma)
Origin of the Name

Named after the town of Serravalle Scrivia (Italia), Piemonte.

Historical Variants

Serravallien (Pareto 1865, Mayer-Eymar 1868), --- (Pareto 1865), Serravalliano (dal Piaz & Trevisan 1956), Serravallium

Hierarchy and sequence

Units at roof
Upper boundary

last common appearance of Discoaster kugleri (calcareous nannoplancton) and Globigerinoides subquadratus (planctonic Foraminifera), short normal-polarized magnetic chronozone C5r.2n

Lower boundary

FAD Sphenolithus heteromorphus (calcareous nannoplancton), Mi3b oxygen isotope excursion marking the onset of the Middle Miocene Cooling step

Age

Age at top
  • middle Miocene
Age at base
  • middle Miocene

References

Definition
Pareto L. (1865) : Note sur les subdivisions que l'on pourrait établir dans les terrains de l'Apennin septentrional. Bull. Soc. géol. France (2) 22
Definition
dal Piaz G., Trevisan L. (1956) : Italia. Lexique stratigraphique international, vol. 1 Europe, Fasc. 11
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