Buechbrunnen-Schotter

Torna a Glaciostratigrafia

Rappresentazione e statuto

Colore CMYK
(12%,0%,16%,16%)
Colore RGB
R: 190 G: 215 B: 180
Rango
Formazione litostratigrafica
Uso
Unità in uso.
Status
termine informale

Nomenclatura

Deutsch
Buechbrunnen-Schotter
Français
Gravier de Buechbrunnen
Italiano
Ghiaia di Buechbrunnen
English
Buechbrunnen Gravel
Origine del nome

Hardau (SH), Schaffhausen

Varianti storiche
Obere Klettgauschotter (Graf & Hofmann 2000), Buechbrunnen-Schotter (Graf 2009 S.67)

Descrizione

Potenza
ca. 10 m

Gerarchia e successione

Unità sovrastante

Età

Geomorfologia
  • Pleistocene medio
Età alla base
  • Pleistocene medio

Geografia

Regione-tipo
Klettgau (SH)

Paleogeografia e tettonica

  • Hochterrasse
Tipo di origine
  • sedimentaria
Condizioni di formazione
Glazifluviatile Ablagerung.
Metamorfismo
non metamorfo

Referenze

Definizione
Graf Hansruedi (2009) : Stratigraphie von Mittel- und Spätpleistozän in der Nordschweiz. Beitr. Geol. Karte Schweiz (N.F.) 168, 218 Seiten

S.67: Bei dessen Rückzug wurden die eben abgelagerten Sedimente zum Teil erodiert, und im Oberklettgau entstand der ca. 10 m mächtige Buechbrunnen-Schotter («Obere Klettgauschotter» nach GRAF & HOFMANN 2000), mit den charakteristischen Blockhorizonten, die in der Kiesgrube der GU AG (Fig. 17) im Gebiet Buechbrunnen besonders deutlich ausgebildet sind.
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

The following phase of sedimentation (Beringen Glacial) is characterised by the direct presence of glaciers in Oberklettgau. The presence of the two branches of Rhine glacier (Lake Constance, Walensee) in the region is evidenced by petrography of the gravel. The ice reached towards the present village of Löhningen and left tills in the marginal areas of Oberklettgau, fluvial sand and gravel down-valley, and fine-grained sediments in smaller side valleys (‘Buechbrunnen-Schotter’ and ‘Benzen-Formation’; Fig. 10). Sedimentary evidence reveals that the glaciation comprises two advances separated by a phase of ice retreat. First results of IRSL dating imply an age of ca. 150 ka for the first ice advance towards the Klettgau (Preusser & Graf 2002; Graf 2009a).
Pubblicazioni importanti
Lowick Sally E., Buechi Marius W., Gaar Dorian, Graf Hans R., Preusser Frank (2015) : Luminescence dating of Middle Pleistocene proglacial deposits from northern Switzerland: methodological aspects and stratigraphical conclusions. Boreas
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