Gisement de la Fontaine-aux-Ammonites

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Representation and status

Index
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CMYK Color
-
RGB color
R: 175 G: 135 B: 195
Rank
lithostratigraphic Bed
Validity
Unit is in Use
Status
local name (informal)
SCS note
-
SCS date
-
Comment
-

Nomenclature

German
Fontaine-aux-Ammonites-Fossilhorizont
French
Gisement de la Fontaine-aux-Ammonites
Italian
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English
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Origin of the Name
Fontaine aux Ammonites, Le Môle (France)
Historical Variants
gisement de la Fontaine aux Ammonites (Peterhans 1926, Verniory 1954, Lombard & Wernli 1977, Zaninetti 1977, Dommergues 1982, Dommergues & Meister 1989, Borel 1997), unterer Kondensationshorizont = Ober-Sinemurien (Thury 1973)
Nomenclatorial Remarks
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Synonyms

Synonyms
Non-synonyms
Possible confusion

Description

Description
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Geomorphology
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Thickness
0-0,5 m (Thury 1973)

Components

Lithological content
-
Mineral content
-
Fossil content
-

Hierarchy and succession

Superordinate unit
Formation de la Grande Bonavau
Subordinate units
Units at roof
Units at floor
Lateral equivalents
Upper boundary
-
Lower boundary
-
Stratigraphic discussion
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Age

Age at top
late Sinemurian
Note about top
Raricostatum-Z.
Age at base
late Sinemurian
Note about base
Raricostatum-Z.
Dating method
Ammonites: Dommergues & Meister 1987, 1989, 1990 et 1991, Dommergues et al. 1990.

Geography

Geographical extent
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Type area
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Type locality
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Type profile
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Reference profiles
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Point of interest
  • Langenegggrat (BE)
    Site particularities
    • fossil site
    Site accessibility
    • mountain ridge
    Coordinates
    • (2603700 / 1174890)
    Note
    • Donovan 1958, Thury 1973, Schlatter 1987

Paleogeography and tectonic

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

References

Definition
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Revision
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Important publications
  • Dommergues Jean-Louis, Meister Christian (1987): Succession des faunes d'ammonites au Langenegggrat (Préalpes médianes, région de Thoune, Suisse): une série de référence dans le Sinémurien supérieur. , Géobios 20/3, 313-335
  • Thury Marc F. (1973): Der Lias der östlichen Préalpes Médianes zwischen Boltigen und Spiez. , Inauguraldissertation Univ. Bern, 45 Seiten
  • (1977)
  • Dommergues, Meister Christian (1989): -
  • Peterhans E. (1926): Étude du Lias et des géanticlinaux de la nappe des «Préalpes médianes» entre la vallée du Rhône et le Lac d'Annecy. , Mém. soc. Helv. Sci. nat. 62/2
  • Zaninetti Louisetta (1977): -
  • Dommergues (1982): -
  • Donovan D. T. (1958): The Lower Liassic Ammonite Fauna from the Fossil Bed at Langeneckgrat, near Thun (Median Prealps). , Schweiz. paläont. Abh. 74/2, 58 Seiten
  • Schlatter Rudolf (1987): Beiträge zu den Arietitinae (Ammonidea) aus dem Lotharingien vom Langeneckgrat (Thuner Alpen, Préalpes médianes). , Eclogae Geol. Helv. 80/3, 1119-1127

Material and varia

Applications
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