«Alveolinenkalk»

Rappresentazione e statuto

Colore CMYK

(0%,0%,0%,100%)

Rango

facies petrografica

Uso

Unità in uso.

Status

termine informale

Nomenclatura

Deutsch

«Alveolinenkalk»

Français

«Calcaire à Alvéolines»

Italiano

«Calcare a Alveolina»

English

«Alveolina Limestone»

Varianti storiche

Alveolinen-Kalk, Alveolina Limestone (Lihou 1995)

Gerarchia e successione

Unità di rango superiore

• Einsiedeln-Member

Età

Geomorfologia

• Eocene medio

Età alla base

• primo Eocene

Geografia

Estensione geografica

Sibetsegg (Lihou 1995).

Paleogeografia e tettonica

Paleogeografia

Distal NHS (S-Helv.)

Termini generici

• Blattengrat

Tipo di origine

• sedimentaria

Referenze

Revisione

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.