Färnigen-Zone

Representation and status

Color CMYK

N/A

Color RGB

R: 241 G: 239 B: 237

Rank

tectonic zone

Validity

Unit is in Use

Status

valid

Nomenclature

Deutsch

Färnigen-Zone

Français

zone de Färnigen

Italiano

zona di Färnigen

English

Färnigen zone

Origin of the Name

Weiler Färnigen = Fernigen (UR), Meiental

Historical Variants

Juramulde im Aarmassiv bei Fernigen = Mulde von Fernigen (Heim & Heim 1916), Färnigen-Mulde auct., Färnigen-Keil auct., zone schisteuse de Lötschental-Fernigen (Gysin 1952), Fernigenzone = zone de Fernigen (Kammer 1989), Färnigen-Zone (Labhart et al. 2015), Lötschental-Fernigen-Schieferzone, Färnigen Zone (Berger et al. 2017)

Description

Thickness

Meist 10-50 m, bis lokal 150-500 m (Labhart et al. 2015)

Hierarchy and sequence

Subordinate units

• «Färnigen-Kalk»
• «Färnigen-Vulkanite»

Age

Age at top

• Mesozoic

Age at base

• Late Paleozoic

Geography

Geographical extent

Chalchberg, Chli Griessenhorn, Rot Bergli.

References

Definition

Berger Alfons, Mercolli Ivan, Herwegh Marco, Gnos Edwin (2017) : Geological Map of the Aar Massif, Tavetsch and Gotthard Nappes. Geological Special Map 1:100'000, Explanatory Notes 129

p.54: The Färnigen Zone represents a narrow (in general 50–150m, at Chli Griessenhorn up to 500m) band of 19 km length of Mesozoic sedimentary rocks wedged along a prominent Alpine fault zone into the polycyclic metamorphic basement separating the Erstfeld Zone in the northwest from the Sustenhorn Zone in the southeast. The Färnigen Zone can be followed from the Chalchtallücke in the southwest to the Intschialp in the northeast and mainly comprises strongly deformed Middle to Late Jurassic sedimentary rocks (ALB.HEIM & ARN.HEIM 1916, LABHART et al. 2015 b and references therein).