Tristel Formation
| Tristel Formation Stratigraphic range: Barremian | |
|---|---|
 Tristel Formation near type locality. Looking at Naafkopf from SW. | |
| Type | Geological formation |
| Unit of | Rhenodanubic Group, Bündnerschiefer |
| Thickness | 150 to 250 m.[1] |
| Location | |
| Coordinates | 47°03′39″N 9°36′25″E / 47.060767°N 9.607067°ECoordinates: 47°03′39″N 9°36′25″E / 47.060767°N 9.607067°E |
| Region | Allgäu, Oberbayern, Tirol, Vorarlberg |
| Country | Austria, Germany, Liechtenstein, Switzerland |
| Type section | |
| Named for | Mountain next to the Naafkopf |
| Named by | Schwizer, B. |
| Year defined | 1984 |
The Tristel Formation is a stratigraphic formation deposited between the upper Barremian and the lower Aptian (Lower Cretaceous). It consists of thickly banked limestones, marls and shales.[1] It is the lowest formation of the Bündnerschiefer and belongs to the Rhenodanubic Group.[2]
Outcrops can be found in the Engadin window, the Tauern window, the Rechnitz window, and many localities of the Penninic realm of the eastern and western Alps.[3]
The type locality is the area around the Naafkopf (47°03′39″N 9°36′25″E / 47.060767°N 9.607067°E) in the border region of Austria, Liechtenstein and Switzerland.[1]
The Tristel Formation can be correlated with the Klus Formation in Graubünden and the Couches de l’Aroley Formation in Savoie (France) and Valais (Switzerland).[4][5]
References
- 1 2 3 "Tristel-Formation". Lithostratigraphische Einheiten Deutschlands.
- ↑ Tricart, Pierre-Charles de Graciansky, David G. Roberts, Pierre (2010). The Western Alps, from rift to passive margin to orogenic belt : an integrated geoscience overview (1st ed.). Amsterdam: Elsevier. p. 158. ISBN 978-0444537249.
- ↑ "http://palstrat.uni-graz.at/Stratigraphische_Tabelle_von_Oesterreich_2004.pdf" (PDF). Retrieved 25 February 2013. External link in
|title=(help) - ↑ Loprieno, Andrea (2011). "The Valais units in Savoy (France): a key area for understanding the palaeogeography and the tectonic evolution of the Western Alps".
- ↑ Tricart, Pierre-Charles de Graciansky, David G. Roberts, Pierre (2010). The Western Alps, from rift to passive margin to orogenic belt : an integrated geoscience overview (1st ed.). Amsterdam: Elsevier. p. 153. ISBN 978-0444537249.