Tristle formation
The tristel formation is a Cretaceous stratigraphic formation which in Tauernfenster , Engadine window , Rechnitz window and many other destinations in the Eastern and Western Alps found. It is part of the Bündner slate or the Penninic units of the Alps.
The Tristel Formation was deposited from the Lower Aptium to the Upper Barremium . It consists of a series of limes , marls and clay stones . Due to the strong deformation, the thickness is difficult to estimate, but averages between 150 and 250 m. The deposition takes place in the form of turbidic beds.
The Tristle Formation occupies a low position within the units of the Valais Ocean. It can therefore be correlated with the Klus Formation and the Couches de l'Aroley Formation . All three formations mark the initial stage of the rift phase of the Valais Ocean and represent the lowest part of the Valais trilogy.
The Tristle Formation is part of the Rhenodanubian group .
Type profile
The type profile of the Tristel Formation is located near the Naafkopf in the Austria-Liechtenstein border area ( Naafkopf ). The profile is on the Liechtenstein side on a rocky ridge called Tristel, Jesfürggli. The first description of the profile was published in 1984 by Benno Schwizer. The formation is named after a rock ridge, the "Tristel" in the Jestal.
Web links
- The Tristel Formation: Comparative study in Graubünden, Liechtenstein, Vorarlberg and Bavaria (PDF; 19 kB): Table of contents of Benno Schwizer's dissertation.
Individual evidence
- ↑ a b Schwizer, B. (1984): Die Tristelschichten.- Dissertation: 185 p .; Univ. Bern.
- ↑ Stratigraphic table from Austria 2004 (PDF; 381 kB) Archived from the original on April 24, 2018. Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved February 25, 2013.
- ^ A b Pierre-Charles de Graciansky, David G. Roberts, Pierre Tricart: The Western Alps, from rift to passive margin to orogenic belt: an integrated geoscience overview . 1st ed.Elsevier, Amsterdam 2010, ISBN 978-0-444-53724-9 , pp. 158 .
- ↑ a b c [1]
- ^ Andrea Loprieno: The Valais units in Savoy (France): a key area for understanding the palaeogeography and the tectonic evolution of the Western Alps . 2011.
