Buechbrunnen-Schotter
Back to GlaciostratigraphyRepresentation and status
- Color CMYK
- (12%,0%,16%,16%)
- Color RGB
- R: 190 G: 215 B: 180
- Rank
- lithostratigraphic Formation
- Validity
- Unit is in Use
- Status
- informal term
Nomenclature
- Deutsch
- Buechbrunnen-Schotter
- Français
- Gravier de Buechbrunnen
- Italiano
- Ghiaia di Buechbrunnen
- English
- Buechbrunnen Gravel
- Origin of the Name
-
Hardau (SH), Schaffhausen
- Historical Variants
- Obere Klettgauschotter (Graf & Hofmann 2000), Buechbrunnen-Schotter (Graf 2009 S.67)
Description
- Thickness
- ca. 10 m
Hierarchy and sequence
- Units at roof
Age
- Age at top
-
- Middle Pleistocene
- Age at base
-
- Middle Pleistocene
Geography
- Type area
- Klettgau (SH)
Palaenography and tectonic
-
- Hochterrasse
- Kind of protolith
-
- sedimentary
- Conditions of formation
- Glazifluviatile Ablagerung.
- Metamorphism
- non metamorphic
References
- Definition
-
(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.
- Definition
-
(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).
- Important Publications
-
(2015) : Luminescence dating of Middle Pleistocene proglacial deposits from northern Switzerland: methodological aspects and stratigraphical conclusions. Boreas