Saluver-Gruppe
Back to Allgäu-FormationRepresentation and status
- Color CMYK
- (0%,20%,55%,14%)
- Color RGB
- R: 220 G: 175 B: 100
- Rank
- lithostratigraphic Group
- Validity
- Unit is in Use
- Status
- unknown status
- Status discussion
Nomenclature
- Deutsch
- Saluver-Gruppe
- Français
- Groupe du (Val) Saluver
- Italiano
- Gruppo della (Val) Saluver
- English
- Saluver Group
- Origin of the Name
-
Piz Nair im oberen Val Saluver (GR)
- Historical Variants
-
Saluvergesteine (Studer & Escher 1853/1869), Saluverschichten = Saluverserie = Saluverschiefer + Saluversandstein + Saluverbreccie (Cornelius 1923, Cornelius 1932), Saluvergesteine = Saluverschichten (Roesli 1945), Saluver Group (Furrer et al. 1985), Syn-rift sediments = Saluver Group (Manatschal & Nievergelt 1997)
- Nomenclatorial Remarks
-
Doggerkalke und -breccien + Oxford-Argovien (Staub 1946)
Hierarchy and sequence
- Subordinate units
- Units at roof
- Units at floor
- Lower boundary
-
Agnelli-Fm. (conformity) oder ältere sedimentäre bis kristalline Einheiten (unconformity) (Finger 1978, Manatschal & Nievergelt 1997)
Age
- Age at top
-
- Callovian
- Note about top
-
Einzelne Bänke ziehen noch bis im Blais-Radiolarit hin. Oder sogar jünger (Manatschal & Nivergelt 1997).
- Age at base
-
- Toarcian
- Dating Method
-
Kreide (Cornelius 1932) ; --- (Roesli 1944)
Geography
- Geographical extent
- Oberengadin
Palaenography and tectonic
-
- Dogger des Ostalpins
- Paleogeography
-
Piemont Basin
,
Adriatic continental margin
:
southern, passive continental margin / platform
- Tectonic unit (resp. main category)
- Kind of protolith
-
- sedimentary
- Conditions of formation
-
Syn-rift sediments (Manatschal & Nievergelt 1997).
References
- Definition
-
1997) :
A continent-ocean transition recorded in the Err and Platta nappes (Eastern Switzerland). Eclogae geol. Helv. 90/1, 3-27
(
p.8: Syn-rift sediments
Sedimentary breccias with a variable amount of matrix and intercalated hemipelagic background sediments, sandy limestones and shales conformably overlie the top of the Agnelli Formation or unconformably overlie the older sediments or metamorphic basement rocks (Finger 1978). The very local distribution and the strong variability in composition and texture, typical for syn-rift sediments, have led to different local names for these sediments, such as Saluver Formation (Finger 1978), Bardella Formation (Finger 1978), Salteras Series (Stöcklin 1949) and Salamun Breccia (Stöcklin 1949). In this study, the name "Saluver Group" (Furrer et al. 1985) is used for these sedimentary breccias and sandstones which are often particularly rich in crystalline basement clasts. Characteristic for the sedimentary breccias of the Saluver Group are a general up-section change from pure carbonate to carbonate/crystalline breccias (Stöcklin 1949) and the occurrence of one or more thinning- and fining-upward cycles (Finger 1978). The age of most of the breccias in the Lower Austroalpine units is badly constrained but the observation that these breccias stratigraphically overlie a hardground of Early Pliensbachien age (pers. com. Heinz Furrer) and are themselves overlain by radiolarian cherts of the upper Middle to Upper Jurassic Radiolarite Formation (Baumgartner 1987) makes a Middle Jurassic age for them most likely. The fact that in some places younger strata, sometimes even Lower Cretaceous Argille a Palombini, onlap the breccias and appear to interfinger with them (e.g. Fuorcla Mulix. see below) suggests that some of the breccias might also be younger.
-
Saluver-Formation
- Name Origin
-
Piz Nair im oberen Val Saluver (GR)
- Rank
- lithostratigraphic Formation
- Status
- unknown status
- In short
-
Polymikte Brekzien mit vorwiegend kristallinen Komponenten, rote Sandsteine, sowie dunkle und rote Tonschiefer.
- Age
- Mittlerer Jura
-
Oberes Member (Saluver-Fm.)
- Rank
- lithostratigraphic Member (Subformation)
- Status
- informal term
- In short
-
Schwarze Tonschiefer mit feinklastischen, sandigen Lagen.
- Age
- Mittlerer Jura
-
Mittleres Member (Saluver-Fm.)
- Rank
- lithostratigraphic Member (Subformation)
- Status
- informal term
- In short
-
Gradierte, matrixarme Brekzien und Sandsteinen in dünnbankigen, kalkfreien, roten Tonsteinen.
- Age
- Mittlerer Jura
-
Unteres Member (Saluver-Fm.)
- Rank
- lithostratigraphic Member (Subformation)
- Status
- informal term
- In short
-
Grobe, komponentengestützte, poly- und monomikte Brekzien, dickbankig und chaotisch.
- Age
- Mittlerer Jura
-
Bardella-Formation
- Name Origin
-
Piz Bardella (GR), Samedan
- Rank
- lithostratigraphic Formation
- Status
- informal term
- In short
-
Wechsellagerung von grauen bis braunen, kalkhaltigen Tonsteinen und feinkörnigen, sandigen Kalken mit Einschaltungen aus dickbankigen Brekzien mit karbonatischen und kristallinen Komponenten. Die Obergrenze der Bardella-Formation ist fehlend. Die Schichtreihe ist gegen oben tektonisch begrenzt.
- Age
- Mittlerer Jura
-
Salteras-Formation
- Name Origin
-
Piz Salteras (GR), Bergün/Tinizong-Rona
- Rank
- lithostratigraphic Formation
- Status
- informal term
- In short
- Wechsellagerung von dunklen, leicht kalkigen Tonsteinen, glimmerreichen Sandsteinen und polymikten Brekzien mit sandiger Matrix und karbonatischen sowie kristallinen Komponenten.
- Age
- Mittlerer Jura
-
Salamùn-Brekzie
- Name Origin
-
Murtèl Salamùn (GR), Bergün/Bravuogn
- Rank
- lithostratigraphic Formation
- Status
- informal term
- In short
-
Matrixarme, bräunliche Brekzie mit karbonatischen und kristallinen Komponenten («Albula-Granit» und Glimmerschiefer). An der Basis dominieren Brekzien mit dolomitischen Klasten.
- Age
- Mittlerer Jura
-
Err-Brekzie
- Name Origin
-
W- bis N-Flanke des Piz d'Err (GR), Tinizong-Rona
- Rank
- lithostratigraphic Formation
- Status
- local name (informal)
- In short
-
Im unteren Bereich dickbankige und grobe Karbonat-Brekzien mit einigen kristallinen Komponenten und karbonatischer Matrix. Im oberen Bereich feinkörnigere Brekzien und Einschaltungen von Kalkbänken.
- Age
- Mittlerer Jura