Err-Deckenkomplex
Back to Err Nappe ComplexRepresentation and status
- Color CMYK
- N/A
- Color RGB
- R: 241 G: 239 B: 237
- Rank
- nappe
- Validity
- Unit is in Use
- Status
- valid
- Status discussion
Nomenclature
- Deutsch
- Err-Deckenkomplex
- Français
- Complexe de nappes d'Err
- Italiano
- Complesso di falde di Err
- English
- Err Nappe Complex
- Origin of the Name
- Historical Variants
-
Errdecke (Zyndel 1912, Ott 1922, Staub 1934, Stöcklin 1949), Err-Julier-Gruppe (Cornelius 1935), nappe de l'Err (Trümpy 1970), Err-Decke = cuverta dal Err (Manatschal 1995), Err system (Manatschal & Nivergelt 1997), Err-Deckenkomplex (Furrer et al. 2015), Err Nappe Complex (TK500 / Gouffon et al. 2024)
Description
- Description
-
Tieferer tektonischer Teil des Unterostalpins. Stratigraphisch charakterisiert durch spät- bis postvariszische kalk-alkalische Intrusiva (Typ «Albula-Granit») und Extrusiva (Nair-Porphyroid), sowie eine geringmächtige Mesozoische Sedimentbedeckung mit frühjurassiche kieselreiche Kalke (Agnelli-Fm.) und mitteljurassische, syn-rift, kristallin-führende Brekzie (Saluver-Gr.).
Bestehend aus Err-Decke, Samedan-Zone p.p. und Murtiröl-Val-Vaüglia-Schuppen. Vor allem granitische Gesteine: eher orthoklasarm, hornblendearm, grüne Granite bis Granodiorite.
Hierarchy and sequence
- Subordinate units
- Upper boundary
-
Samedan-Zone bzw. Julier-Decke
Age
- Age at top
-
- Early Cretaceous
- Age at base
-
- Paleozoic
Geography
- Geographical extent
- Zwischen Oberhalbstein und Oberengadin (NW der Engadin-Störung).
- Point of interest
-
-
Piz Jenatsch (GR)
Site accessibility- Grat
- (2774700 / 1157120)
- Stöcklin 1949: vollständigste Triaskappe über Kristallin
-
Piz Jenatsch (GR)
References
- Definition
-
(2024) :
Tectonic Map of Switzerland 1:500000, Explanatory notes. Federal Office of Topography swisstopo, Wabern
p.85: The Err Nappe Complex embraces a number of tectonic subunits that, from a paleogeographical point of view, are derived from the most distal Adriatic passive margin which was linked to the adjacent oceanic realm of the Platta Nappe (Epin et al. 2017).
The Err Nappe (s. str.) is confined to an area northwest of the Engadine Fault (see § 10.5) between Albulapass and Julierpass where it overlies the Carungas Slice (Stöcklin 1949), both traditionally being referred to as “Err-Carungas Nappe”. The Bardella-Roccabella Slices are also located northwest of the Engadine Fault. It is convenient to group the equivalents of similar slices southeast of the Engadine Fault (Corvatsch, Chastelets and Murtiröl slices) together into the Err Nappe Complex. The latter slices are substantially displaced in respect to the “Err-Carungas Nappe” and the Bardella-Roccabella Slices by a sinistral strike-slip motion along the Engadine Fault, combined with relative uplift of the southeastern block (Schmid & Froitzheim 1993).
- Important Publications
-
(1949) : Zur Geologie der nördlichen Errgruppe zwischen Val d'Err und Weissenstein (Graubünden). Inauguraldiss. Univ. Zürich
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Oberer Err-Einheit
- Rank
- tectonic unit
- Status
- incorrect name (though informally used)
-
Mittlerer Err-Einheit
- Rank
- tectonic unit
- Status
- incorrect name (though informally used)
- Nomenclatorial Remarks
- <p>Err-Decke s.s. (Cornelius 1932 und 1935, Dietrich 1969), Err-Grevasalvas (Trümpy 1975, Finger 1978), Err-Kristallin + Vairana (Handy et al. 1993), Middle Err unit (Manatschal & Nivergelt 1997)</p>
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Err-Decke
- Name Origin
- Rank
- nappe
- Status
- valid
- In short
-
The Err Nappe is a Lower Austroalpine tectonic unit confined to an area northwest of the Engadine Fault between Albulapass and Julierpass where it overlies the Carungas Slice. Towards the south it is separated from the Julier Nappe (Bernina Nappe Complex) by a multiply deformed synclinorium, the so-called “Samedan Zone”.
-
Grevasalvas-Einheit
- Name Origin
- Rank
- tectonic unit
- Status
- local name (informal)
- Valid term
- Corvatsch-Schuppe
- In short
-
Äquivalent der Corvatsch-Schuppe nordwestlisch der Engadiner Linie.
-
Corvatsch-Schuppe
- Name Origin
- Rank
- tectonic slice
- Status
- informal term
- In short
-
The Corvatsch Slice, located southeast of the Engadine Fault, can be seen as the equivalent of the Err Nappe. It is predominantly made up of intensely deformed pre-Mesozoic basement. Its Mesozoic cover is only rarely preserved just below the overlying Bernina Nappe (e.g., at Fuorcla Surlej).
-
Fuorcla-Surlej-Sedimente
- Rank
- tectonically bounded lithostratigraphic unit
- Status
- informal term
- In short
- Geringmächtige normalliegende Sedimentbedeckung des Corvatsch-Kristallins und Deckentrenner mit der hangende Bernina-Decke s.s.
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Corvatsch-Granitkomplex
- Name Origin
- Rank
- lithostratigraphic Superformation
- Status
- informal term
- In short
-
Porphyrischer bis gleichkörniger, grobkörniger (Hornblende)-Biotit-Granodiorit.
- Age
- Carboniferous
-
Corvatsch-Granodiorit
- Name Origin
- Rank
- lithostratigraphic unit
- Status
- incorrect name (though informally used)
- In short
-
Schwach hellgrünlich-grauer, biotitarmer Granit.
-
Ota-Porphyr
- Name Origin
-
Alp Ota (GR) am Piz Corvatsch (Oberengadin)
- Rank
- lithostratigraphic unit
- Status
- local name (informal)
- In short
-
Porphyrige Varietät des Corvatsch-Granodiorites.
- Age
- Carboniferous
-
Crap-Margun-Granit
- Name Origin
-
Crap Margun (GR), NW-Grat des Piz Mortèl
- Rank
- lithostratigraphic unit
- Status
- local name (informal)
- In short
-
Hellgrauer porphyroklastischer Granit.
-
Ota-Porphyr
- Name Origin
-
Alp Ota (GR) am Piz Corvatsch (Oberengadin)
- Rank
- lithostratigraphic unit
- Status
- local name (informal)
- In short
-
Porphyrige Varietät des Corvatsch-Granodiorites.
- Age
- Carboniferous
-
Chastelets-Granit
- Name Origin
- Rank
- lithostratigraphic unit
- Status
- local name (informal)
- Valid term
- Corvatsch-Granodiorit
- In short
-
Porphyrartiger Granit.
-
Crap-Alp-Ota-Granit
- Rank
- lithostratigraphic unit
- Status
- local name (informal)
- In short
-
Graugrüner feinkörniger Granit.
-
Unterer Err-Einheit
- Rank
- tectonic unit
- Status
- incorrect name (though informally used)
- In short
-
Unterer Teil des Err-Deckenkomplexes (d.h. unterhalb der Err-Decke s.s.), der ursprünlgich am nähesten zum Kontinent-Ozean-Übergang lag.
-
Carungas-Schuppe
- Name Origin
- Rank
- tectonic slice
- Status
- local name (informal)
- In short
-
The Lower Austroalpine Carungas Slice, consisting of a band of predominantly overturned Mesozoic sediments and its associated crystalline basement, forms the hangingwall of the Platta Nappe and the footwall of the Err Nappe. This slice extends from east of Savognin all the way to the Julierpass road above Bivio, along the western margin of the Err Nappe (Manatschal & Nievergelt 1997, their “lower Err Nappe”). The small portion of crystalline rock wedged between the two branches of the Engadine Fault near Sils Maria is also related to the Carungas Slice. This slice is derived from the most distal part of the former Adriatic continental margin.
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Roccabella-Schiefer
- Name Origin
- Rank
- lithostratigraphic unit
- Status
- junior synonym (disused)
- Valid term
- Emmat-Formation
- In short
- Grauer Kalk und schwarzer Tonschiefer mit kalkarenitischen Einschaltungen.
- Age
- Aptian
-
Roccabella-Schuppe
- Name Origin
- Rank
- tectonic slice
- Status
- local name (informal)
- Valid term
- Chastelets-Schuppe
- In short
-
The Roccabella Slice, located northwest of the Engadine Fault, is found in the immediate footwall of a klippe of the Err Nappe and is in direct contact with the Platta Nappe in the area east of Septimerpass.
-
Roccabella-Schiefer
- Name Origin
- Rank
- lithostratigraphic unit
- Status
- junior synonym (disused)
- Valid term
- Emmat-Formation
- In short
- Grauer Kalk und schwarzer Tonschiefer mit kalkarenitischen Einschaltungen.
- Age
- Aptian
-
Roccabella-Granit
- Name Origin
-
Nordhang der Roccabella (GR)
- Rank
- lithostratigraphic Formation
- Status
- informal term
- In short
- Turmalin führender, feinkörniger Granit.
- Age
- Late Carboniferous (= Pennsylvanian)
-
Chastelets-Schuppe
- Name Origin
- Rank
- tectonic slice
- Status
- informal term
- In short
-
The Chastelets Slice, located southeast of the Engadine Fault, is a small slice of basement and cover in the footwall of the Corvatsch Slice. It directly overlies the Platta Nappe and hence occupies a similar position to that of the Roccabella Slice northwest of the Engadine Fault.
-
Murtiröl-Schuppe
- Name Origin
- Rank
- tectonic slice
- Status
- informal term
- In short
-
The Murtiröl Slice, consisting of basement and cover, forms a dome-like feature in the footwall of an important extensional detachment. This detachment fault and the adjacent Engadine Fault separate the Murtiröl Slice from all the surrounding units belonging to either the Bernina Nappe Complex (in the northwest and southwest) or to the Upper Austroalpine Languard and Ortler nappes (in the east and northeast).