Diechtergletscher–Tscharren-Zone
Back to Aar MassifRepresentation 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
- Diechtergletscher–Tscharren-Zone
- Français
- zone du Diechtergletscher–Tscharren
- Italiano
- zona del Diechtergletscher–Tscharren
- English
- Diechtergletscher–Tscharren zone
- Historical Variants
-
Diechtergletscher-Tscharren Zone (Berger et al. 2017)
Hierarchy and sequence
- Subordinate units
Age
- Age at top
-
- Late Carboniferous (= Pennsylvanian)
- Age at base
-
- Late Carboniferous (= Pennsylvanian)
Geography
- Geographical extent
- Ofenhoren - Gwächtenhoren - Triftstöckli - Maasplanggjoch.
Palaenography and tectonic
- Paleogeography
- European continental plate
- Tectonic unit (resp. main category)
References
- Definition
-
(2017) :
Geological Map of the Aar Massif, Tavetsch and Gotthard Nappes. Geological Special Map 1:100'000, Explanatory Notes 129
p.42: For tectonic reasons, the Diechtergletscher-Tscharren Zone was separated from the Lötschental-Maderanertal Zone, despite the lithological similarity and the close age relationships. This separation is based on the precise chronological relationship of the Diechtergletscher-Tscharren Zone with respect to the intrusion of the Central Aar Granite. The latter intruded 297±2 Ma ago into the metasedimentary, volcanic and volcaniclastic rocks of the Diechtergletscher-Tscharren Zone, dated at 303±4 Ma, at depths of 8–10 km (Figs. 6, 9 b, SCHALTEGGER & CORFU 1995). This observation (FRANKS 1968 a, SCHENKER 1986) implies that the Late Carboniferous land surface became buried to a depth of at least 8 km within a few million years (see also p. 51f.). The Diechtergletscher-Tscharren Zone is divided into two formations: the Diechtergletscher Formation and the Tscharren Formation.
-
Diechtergletscher-Formation
- Name Origin
-
Diechtergletscher (BE), Guttannen
- Rank
- lithostratigraphic Formation
- Status
- informal term
- In short
-
Dunkle, plattige Tonschiefer mit dünnen, meist weisslichen, vulkanogenen Lagen (Pyroklastite) der Diechtergletscher-Tscharren-Zone.
- Age
- Late Pennsylvanian
-
Maasplanggstock-Metaandesit
- Name Origin
- Rank
- lithostratigraphic unit
- Status
- local name (informal)
- In short
-
Vulkanischer bis subvulkanischer Andesitkörper der im Diechtergletscher-Formation eingelagert ist.
- Age
- Late Pennsylvanian
-
Garwiidi-Diorit
- Rank
- lithostratigraphic unit
- Status
- local name (informal)
- In short
-
Spät- bis postvariszischer (295,2 +/-1.7 Ma), subvulkanischer, Biotit führender Hornblende-Quarzdiorit in der Dieschtergletscher-Formation.
- Age
- Asselian
-
Tscharren-Formation
- Name Origin
- Rank
- lithostratigraphic Formation
- Status
- informal term
- In short
-
Sedimentäre und vulkanogene Bildungen der Diechtergletscher-Tscharren-Zone v.a. schwarze Tonschiefer mit Anthrazitflözen, Konglomerate, Ignimbrite, helle und dunkle Tuffe, z.T. Lapilliführend.
- Age
- Late Pennsylvanian