Schmerlet-Formation

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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
Engiwald-Vorstoss

Nomenclature

German
Schmerlet-Formation
French
Formation du Schmerlet
Italian
Formazione del Schmerlet
English
Schmerlet Formation
Origin of the Name

Schmerlet = Schmärlet (SH)

Historical Variants
Glazilakustrische Serie (Graf 1996, Keller & Krayss 2010), Schmerlet-Formation (Graf 2009), Schmerlat-Formation (Müller 2010)
Nomenclatorial Remarks
-

Synonyms

Synonyms
Non-synonyms
Possible confusion

Description

Description
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Geomorphology
-
Thickness
-

Components

Lithological content
  • silt : grains: 1/16 mm - 2 um (crushes under the teeth ; rock = siltstone)
  • sand : grains: 1/16 mm - 2 mm (granular feel under the hand ; rock = arenite : sandstone)
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
Unterer Klettgau und Rheintal.
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
-
Sequence
-
Tectonic Unit (resp. main category)
Hochterrasse
Metamorphism
-
Metamorphic facies
-
Note on metamorphism
-

References

Definition
Graf Hansruedi (2009): Stratigraphie von Mittel- und Spätpleistozän in der Nordschweiz. , Beitr. Geol. Karte Schweiz (N.F.) 168, 198 S.

[…] meist sandigen und tonig-siltigen Ablagerungen […].
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

Glaciers left complex sedimentary successions in the Rhine trough and the southerly channel, comprising till, lake deposits and gravel (‘Engiwald-Formation’ and ‘Schmerlet-Formation’), was not eroded during ice meltdown. Partial erosion in Oberklettgau was caused by meltwater flowing through a small valley (Engi). Later, meltwater discharge shifted to the south, causing initial incision of the present course of the River Rhine.
Important publications

Material and varia

Applications
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