Tristel Formation

Tristel Formation
Stratigraphic range: Barremian

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Tristel Formation; Stratigraphic range: Barremian PreЄ Є O S D C P T J K Pg N ↓
	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 / 47.060767; 9.607067) 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). Archived from the original (PDF) on 30 September 2007. 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.

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[bgr-Tristel-Formation-1] 1 2 3 "Tristel-Formation". Lithostratigraphische Einheiten Deutschlands.

[Tricart_2010-2] 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.

[stratchart-austria-3] "http://palstrat.uni-graz.at/Stratigraphische_Tabelle_von_Oesterreich_2004.pdf" (PDF). Archived from the original (PDF) on 30 September 2007. Retrieved 25 February 2013. External link in |title= (help)

[Loprieno_2011-4] 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_2010_2-5] 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.