Laufen-Member

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Representation and status

Index
-
CMYK Color
siehe Balsthal-Formation
RGB color
R: 170 G: 195 B: 215
Rank
lithostratigraphic Member
Validity
Unit is in Use
Status
valid formal name
SCS note
-
SCS date
-
Comment
-

Nomenclature

German
Laufen-Member
French
Membre de Laufon
Italian
Membro di Laufen
English
Laufen Member
Origin of the Name

Laufen (BL)

Historical Variants
Laufenerstein, Laufen-Schichten (Gygi 1995 S.13), Roche de Laufon = Laufner Kalk (Bollin 1996), Laufen-Member, Membre de Laufon
Nomenclatorial Remarks
-

Synonyms

Synonyms
Non-synonyms
Possible confusion

Description

Description
Das Laufen-Member besteht aus sehr variablen, geschichteten Kalksteinen der Balsthal-Formation: Mikrite, Oolithe, dolomitische Onkolithe bis zu koralligenen Kalken. Onkoide treten an der Basis vor («akzessorische Mumienbänke»). Häufige Fossilien: Bivalven und Brachiopoden, keine Ammoniten.
Geomorphology
-
Thickness
Ca. 16 m, bis 25 - 30 m auf Bl. Chasseral (Aufranc et al. 2017)

Components

Lithological content
  • oolithic limestone
  • limestone
  • micritic limestone
Mineral content
-
Fossil content
  • ostreids
  • brachiopods
  • echinoids
  • bivalves

Hierarchy and succession

Superordinate unit
Balsthal-Formation
Subordinate units
Units at roof
Units at floor
Steinibach-Member
Lateral equivalents
Upper boundary
-
Lower boundary
-
Stratigraphic discussion
-

Age

Age at top
late Oxfordian
Note about top
-
Age at base
late Oxfordian
Note about base
-
Dating method
Klastische Schüttungen und Sequenz-Stratigraphie

Geography

Geographical extent
Nordwestschweiz
Type area
Type locality
  • Laufen (BL)
    Site particularities
    • typical facies
    Coordinates
    • (2604950 / 1252150)
Type profile
Reference profiles
-
Point of interest
  • Gorges de Court
    Site particularities
    • upper boundary
    • lower boundary
    • typical facies
    Coordinates
    • (2594580 / 1238050)
    Note
    • Hug 2001, Wetzel & Strasser 2001

Paleogeography and tectonic

Paleogeography
Northern Tethyan Carbonate Platform :
Plateforme de Bourgogne, ... = Northern Tethyan Carbonate Platform (NTCP) ,
Kind of protolith
  • sedimentary
Conditions of formation
-
Sequence
-
Tectonic Unit (resp. main category)
Jura
  • Southern Germany
  • Black Forest
Metamorphism
non metamorphic
Metamorphic facies
-
Note on metamorphism
-

References

Definition
-
Revision
-
Important publications
-

Material and varia

Applications
-
  • «akzessorische Mumienbänke» Show details

    Origin of the Name
    -
    Rank
    lithostratigraphic Bed
    Status
    local name (informal)
    Valid name
    In Short
    Onkolithisches Horizont an der Basis des Laufen-Members, am Übergang vom Hautes-Roches-Korallenkalk.
    Age
    late Oxfordian - late Oxfordian
    Thickness
    -
    Geographical extent
    Anticlinaux de Vellerat, du Raimeux, du Moron et du Graitery.
    Type area
    -
    Comment
    -