Windgällen-Formation
Zurück zu Aar-MassivDarstellung und Status
- Index
- hWi
- Farbe CMYK
- (11%,0%,11%,29%)
- Farbe RGB
- R: 160 G: 180 B: 160
- Rang
- lithostratigraphische Formation
- Gebrauch
- Element ist in Gebrauch
- Status
- informeller Begriff
- Diskussion des Status
Nomenklatur
- Deutsch
- Windgällen-Formation
- Français
- Formation des Windgällen
- Italiano
- Formazione delle Windgällen
- English
- Windgällen Formation
- Herkunft des Namens
- Historische Varianten
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Windgällen-Formation (Schenker 1987), Windgällen Formation (Berger et al. 2017)
- Nomenklatorische Bemerkungen
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non Windgällen-Mb. Kugler 1987
Links
- Nich-Synonyme
Hierarchie und Abfolge
- Untergeordnete Einheiten
Alter
- Alter Top
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- Late Pennsylvanian
- Alter Basis
-
- Late Pennsylvanian
- Datierungsmethode
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299 +/-2 Ma (U/Pb Zirkon ; Schaltegger 1993)
Paläogeografie und Tektonik
- Paläogeografie
- Europäischer Kontinent
- Tektonische Einheit (bzw. Überbegriff)
Referenzen
- Neubearbeitung
-
2017) :
Geological Map of the Aar Massif, Tavetsch and Gotthard Nappes. Geological Special Map 1:100'000, Explanatory Notes 129
p.46: The Windgällen Formation is characterised by a large amount of rhyolitic, volcanic and volcaniclastic rocks and by a subvolcanic intrusive body (Figs.6, 7 a, FRANKS 1968 a). Locally, clastic metasedimentary rocks form the basis of the volcanic sequence. FRANKS (1968 a) stressed the similarity of these sedimentary rocks with those of the Bifertengrätli Formation, despite the lack of datable fossils. The rhyolites of the Windgällen Formation were dated at 299±2 Ma (U/Pb on zircon, SCHALTEGGER 1993) in agreement with the Late Carboniferous age of fossils in the Bifertengrätli Formation.
The particular tectonic position of the rocks of the Windgällen Formation was recognised early in the history of the Alpine geological studies (see FRANKS 1968 a and references therein). In fact, the Windgällen area is a huge Alpine recumbent fold with Late Carboniferous metasedimentary, volcanic and volcaniclastic rocks forming the core, and autochthonous Mesozoic sedimentary rocks the outer parts (Fig.7 a, HANTKE & BRÜCKNER 2011, FUNK et al.1983).
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