Irchel-Schotter (s.s.)
Back to Höhere DeckenschotterRepresentation and status
- Color CMYK
- (0%,16%,12%,16%)
- Color RGB
- R: 215 G: 180 B: 190
- Rank
- lithostratigraphic Formation
- Validity
- Unit is in Use
- Status
- informal term
Nomenclature
- Deutsch
- Irchel-Schotter (s.s.)
- Français
- Gravier de l'Irchel (s.s.)
- Italiano
- Ghiaia dell'Irchel (s.s.)
- English
- Irchel Gravel (s.s.)
- Origin of the Name
-
Hügel Irchel nordöstlich Bülach (ZH)
- Historical Variants
-
Mittlere Irchelschotter (Graf 1993), Irchel-Schotter (Preuss et al. 2011)
Description
- Thickness
- Rund 40 m.
Hierarchy and sequence
- Units at roof
- Upper boundary
-
Hasli-Formation, lokal Steig-Schotter.
Age
- Age at top
-
- Early Pleistocene
- Age at base
-
- Early Pleistocene
Geography
- Geographical extent
- Hügel Irchel (ZH).
Palaenography and tectonic
-
- Höhere Deckenschotter
- Tectonic unit (resp. main category)
- Kind of protolith
-
- sedimentary
- Conditions of formation
-
Schüttung in NW Richtung.
References
- Definition
-
(2011) :
Quaternary glaciation history of northern Switzerland. E&G Quaternary Science Journal 60/2-3, 282-305
p.285: The glaciofluvial gravel on top [of the Langacher-Schotter] (‘Irchel-Schotter’) is cut by a channel-like structure in the SE. This channel is filled by younger glaciofluvial gravel (‘Steig-Schotter’) showing a prominent difference in petrography compared to the two older units. This implies that erosion was not a local phenomenon but rather indicates reorganisation of the entire drainage network.
All over Irchel, the two previous units (‘Irchel-Schotter´, ´Steig-Schotter’) are covered by overbank and channel fill deposits of a meandering river system, with a thickness between 2 m and 7 m (‘Hasli-Formation’).