Urdorf-Bentonit

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Representation and status

Index
U
CMYK Color
N/A
RGB color
R: 255 G: 245 B: 255
Rank
lithostratigraphic Bed
Validity
Unit is in Use
Status
informal term
SCS note
-
SCS date
-
Comment
-

Nomenclature

German
Urdorf-Bentonit
French
Bentonite d'Urdorf
Italian
Bentonite d'Urdorf
English
Urdorf Bentonite
Origin of the Name

Urdorf (ZH)

Historical Variants
Urdorfer Bentonithorizont, Bentonit-Horizont von Urdorf-Uetikon (Pavoni & Schindler 1981), Urdorfer-Bentonit (Gubler 1987), Urdorfer Bentonit (Gubler 2009), Urdorf bentonite (Kälin & Kempf 2009)
Nomenclatorial Remarks
-

Synonyms

Synonyms
Non-synonyms
Possible confusion

Description

Description
Bentonit (Ca-Montmorillonit)
Geomorphology
-
Thickness
-

Components

Lithological content
  • bentonite
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
-

Age

Age at top
Langhian
Note about top
-
Age at base
Langhian
Note about base
-
Dating method

15.27 ± 0.12 Ma oder 15.31 ± 0.05 Ma ((U/Pb-Datierung mit Zirkonen ; Gubler et al. 1992 bzw. Codon et al. 2008 / Nagra 2008).

Geography

Geographical extent
Sihltal (Schüepenloch, Wüesttobel, Eschtürlibach), bei Horgen ZH im Aabach, bei Herrliberg ZH im Rossbachtobel.
Type area
Type locality
-
Type profile
Reference profiles
  • Wüesttobel ZH
    Site particularities
    • upper boundary
    • lower boundary
    • typical facies
    Site accessibility
    • river bed
    Coordinates
    • (2685175 / 1233675)
    Note
    • Datierung: 15.27 ± 0.12 Ma oder 15.31 ± 0.05 Ma ((U/PB auf Zirkone ; Gubler et al. 1992 bzw. Codon et al. 2008 / Nagra 2008).
Point of interest
  • Schüepenloch ZH
    Site particularities
    • upper boundary
    • lower boundary
    • typical facies
    Site accessibility
    • road cut
    Coordinates
    • (2685640 / 1234260)
    Note
    • Waldstrasse.
  • Eschtürlibach ZH
    Site particularities
    • upper boundary
    • lower boundary
    • typical facies
    Site accessibility
    • river bed
    Coordinates
    • (2686600 / 1232815)
  • Horgen (ZH)
    Site particularities
    • upper boundary
    • lower boundary
    • typical facies
    Site accessibility
    • river bed
    Coordinates
    • (2689758 / 1232219)
    Note
    • Im Aabach.
  • Herrliberg (ZH)
    Site particularities
    • upper boundary
    • lower boundary
    • typical facies
    Site accessibility
    • river bed
    Coordinates
    • (2689025 / 1237740)
    Note
    • Im Rossbachtobel.

Paleogeography and tectonic

Paleogeography
North Alpine Foreland Basin,
Kind of protolith
  • sedimentary
  • volcanic
Conditions of formation
-
Sequence
-
Tectonic Unit (resp. main category)
Plateau Molasse
Metamorphism
non metamorphic
Metamorphic facies
-
Note on metamorphism
-

References

Definition
-
Revision
-
Important publications
-

Material and varia

Applications
-