«Alveolinenkalk»

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Representation and status

Color CMYK
(0%,0%,0%,100%)
Rank
petrographic facies
Validity
Unit is in Use
Status
informal term

Nomenclature

Deutsch
«Alveolinenkalk»
Français
«Calcaire à Alvéolines»
Italiano
«Calcare a Alveolina»
English
«Alveolina Limestone»
Historical Variants

Alveolinen-Kalk, Alveolina Limestone (Lihou 1995)

Hierarchy and sequence

Superordinate unit

Age

Age at top
  • middle Eocene
Age at base
  • early Eocene

Geography

Geographical extent
Sibetsegg (Lihou 1995).

Palaenography and tectonic

Paleogeography
South Helvetic Domain
Tectonic unit (resp. main category)
Kind of protolith
  • sedimentary

References

Definition
Lihou Joanne C. (1995) : A new look at the Blattengrat unit of eastern Switzerland: Early Tertiary foreland basin sediments from the south Helvetic realm Eclogae geol. Helv. 88/1, 91-114

p.105: Within the Kaufmanni Limestone of the Lower Sibetsegg profile (GR 733.7/197.7) (Wegmann 1961), there is a local concentration of alveolinids overlain by a sterile marl; this foraminifera is usually found in protected lagoonal environments (Ghose 1977; Racey 1988). The Alveolina Limestone represents a lateral facies change within the Kaufmanni Limestone, and may correlate with the uppermost glauconitic limestone within the Merenegg profile (Fig. 4) which also contains alveolinids and the encrusting foraminifera Planorbulina sp.. The overlying marl at Lower Sibetsegg may correlate with the Globigerina-xich horizon within the Chalberboden profile (Fig. 4), which also contains (reworked) alveolinids.
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