Jochstock-Konglomerat

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Representation and status

Index
eJ
Color CMYK
(0%,12%,52%,2%)
Color RGB
R: 250 G: 220 B: 120
Rank
lithostratigraphic Bed
Validity
Unit is in Use
Status
local name (informal)

Nomenclature

Deutsch
Jochstock-Konglomerat
Français
Conglomérat du Jochstock
Italiano
Conglomerato del Jochstock
English
Jochstock Conglomerate
Origin of the Name

Jochstock (OW)/(NW)/(BE), Urner Alps, 5 km S Engelberg

Historical Variants

Jochstock Conglomerate (Menkveld-Gfeller et al. 2016)

Description

Description

Vorwiegend Komponenten von schwach gelblich anwitterndem, biogenem Kalk (Betlis-Kalk) in dunkler, mergeliger, z.T. sandig-kalkiger Matrix ("Globigerinen-Schiefer").

Age

Age at top
  • late Eocene
Age at base
  • late Eocene

Geography

Geographical extent
Jochpass-Gebiet bei Engelberg (OW).
Type area
Axen-Decke in den Urner Alpen

Palaenography and tectonic

  • Paleogene of the Helvetics
Paleogeography
European continental plate
Tectonic unit (resp. main category)
Kind of protolith
  • sedimentary
Metamorphism
non metamorphic

References

Definition
Menkveld-Gfeller Ursula, Kempf Oliver, Funk Hanspeter (2016) : Lithostratigraphic units of the Helvetic Palaeogene: review, new definition, new classification. Swiss J. Geosc. 109/2, 171-199

p.187: Conglomerate or breccia with partly coarse-grained sandy matrix composed of marlstone (Stad Formation). Pebbles of the Cretaceous (predominantly Betlis Limestone, occasionally Helvetischer Kieselkalk) and Middle Eocene strata (Klimsenhorn Formation) originate from the Axen nappe of the Jochpass region near Engelberg (Canton Obwalden) (Schumacher 1948).

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