Hardau-Schotter

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Representation and status

Index
-
CMYK Color
-
RGB color
R: 190 G: 215 B: 180
Rank
lithostratigraphic Formation
Validity
Unit is in Use
Status
informal term
SCS note
-
SCS date
-
Comment
Die Zuordnung zur Habsburg-Vergletscherung ist unsicher. Neuere Datierungsarbeiten (e.g. Lowick et al. 2015) weisen auf eine Zugehörigkeit zu einer jüngeren Vergletscherung (Beringen-Eiszeit).

Nomenclature

German
Hardau-Schotter
French
Gravier de Hardau
Italian
-
English
Hardau Gravel
Origin of the Name

Hardau (SH), Schaffhausen

Historical Variants
Untere Klettgauschotter, Hardau-Schotter (Graf 2009, Preusser et al. 2011)
Nomenclatorial Remarks
-

Synonyms

Synonyms
Non-synonyms
Possible confusion

Description

Description
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Geomorphology
-
Thickness
Bis 150 m (Preusser et al. 2011).

Components

Lithological content
  • gravel : grains > 2 mm (visible to the naked eye ; rock = rudite: conglomerate or breccia)
Mineral content
-
Fossil content
-

Hierarchy and succession

Superordinate unit
Subordinate units
Units at roof
    -
Units at floor
Lateral equivalents
Upper boundary
-
Lower boundary
-
Stratigraphic discussion
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Age

Age at top
Middle Pleistocene
Note about top
-
Age at base
Middle Pleistocene
Note about base
-
Dating method
-

Geography

Geographical extent
-
Type area
-
Type locality
-
Type profile
-
Reference profiles
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Point of interest
-

Paleogeography and tectonic

Paleogeography
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Kind of protolith
  • sedimentary
Conditions of formation
Glazifluviatile Ablagerung
Sequence
-
Tectonic Unit (resp. main category)
Hochterrasse
Metamorphism
-
Metamorphic facies
-
Note on metamorphism
-

References

Definition
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Revision
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 channel of Oberklettgau, with a base at 340 m a.s.l., contains a complex sedimentary fill (Fig. 10). The sequence starts with glaciofluvial sediments (‘Hardau-Schotter’) that reach a thickness of up to 150 m. The gravel originates from the Lake Constance-Rhine Glacier, although the presence of ice in Klettgau is not documented for the time of gravel formation (Graf 2009a). An erosional trough was later incised into the gravel down to a level of 410 m a.s.l. In addition to the erosion along the valley axis, another channel originating from the south incised at the same time. This trough was later filled by glaciofluvial gravel (‘Geisslingen-Schotter’) ...
Important publications
  • (2000): Zur Eiszeitgeologie des oberen Klettgau (Kanton Schaffhausen, Schweiz).
  • Graf Hansruedi (2009): Stratigraphie von Mittel- und Spätpleistozän in der Nordschweiz. , Beitr. Geol. Karte Schweiz (N.F.) 168, 198 S.

Material and varia

Applications
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