Irchel-Schotter (s.s.)

Rappresentazione e statuto

Colore CMYK

(0%,16%,12%,16%)

Colore RGB

R: 215 G: 180 B: 190

Rango

Formazione litostratigrafica

Uso

Unità in uso.

Status

termine informale

Nomenclatura

Deutsch

Irchel-Schotter (s.s.)

Français

Gravier de l'Irchel (s.s.)

Italiano

Ghiaia dell'Irchel (s.s.)

English

Irchel Gravel (s.s.)

Origine del nome

Hügel Irchel nordöstlich Bülach (ZH)

Varianti storiche

Mittlere Irchelschotter (Graf 1993), Irchel-Schotter (Preuss et al. 2011)

Descrizione

Potenza

Rund 40 m.

Gerarchia e successione

Unità sovrastante

• Hasli-Formation
• Steig-Dolomitschotter

Limite superiore

Hasli-Formation, lokal Steig-Schotter.

Età

Geomorfologia

• Primo Pleistocene

Età alla base

• Primo Pleistocene

Geografia

Estensione geografica

Hügel Irchel (ZH).

Paleogeografia e tettonica

• Höhere Deckenschotter

Termini generici

• Höhere Deckenschotter

Tipo di origine

• sedimentaria

Condizioni di formazione

Schüttung in NW Richtung.

Referenze

Revisione

Preusser Frank, Graf Hans Rudolf, Keller Oskar, Krayss Edgar, Schlüchter Christian (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’).