Küssaburg-Member

Representation and status

Color CMYK

cf. Villigen-Formation

Color RGB

R: 180 G: 190 B: 210

Rank

lithostratigraphic Member (Subformation)

Validity

Unit is in Use

Status

valid formal name

Status discussion

Nomenclature

Deutsch

Küssaburg-Member

Français

Membre de la Küssaburg

Italiano

Membro della Küssaburg

English

Küssaburg Member

Origin of the Name

Ruine Küssaburg / Küssaberg (Deutschland), SE Bechtersbohl (unteres Klettgau-Tal)

Historical Variants

Küssaburg-Schichten (Würtenberger & Würtenberger 1866), Küssaburgschichten (Hantke 1967), Küssaburg Member (Gygi 2000c)

Nomenclatorial Remarks

Gygi (1991, 2000b) schlägt Typus-Profil vor (2 km E der Küssaburg Ruine, 670.550/273.020), Widerspruch Text und Fig. 2 in Gygi (2000b) bezüglich stratigraphischer Position des Crenularis Members.

Description

Description

"fossilarme, feinkörnige Bankkalke. Der oberste Abschnitt des Küssaburg Members ist Echinodermen-haltig (30%)" (Gygi 1969: 88)

Thickness

32,5 m im Typusprofil (Gygi 2000c)

Components

• echinoderms

Hierarchy and sequence

Superordinate unit

• Villigen-Formation

Units at roof

• Wangental-Member
• «Knollen-Bank»

Units at floor

• Hornbuck-Member

Upper boundary

Wangental-Mb.

Lower boundary

Hornbuck-Mb.

Age

Age at top

• Oxfordian

Note about top

Bimammatum-Zone, Hauffianum-Subzone

Age at base

• Oxfordian

Note about base

Bimammatum-Z., Hauffianum-Sz.

Dating Method

Biostratigraphie: Ammoniten (Gygi & Persoz 1986)

Geography

Geographical extent

Klettgau bis zum Rhein (Übergang zum Wangen-Mb.).

Type area

unteres Klettgau-Tal, Süddeutschland

Type locality

• Ruine Küssaburg (Deutschland)
  Site particularities
  • historische Fundstelle
  Site accessibility
  • Grat
  Coordinates
  • (2668810 / 1272760)
  Note
  • SE Bechtersbohl, unteres Klettgau-Tal

Type profile

• Steiggraben (Deutschland)
  Site particularities
  • typische Fazies
  Site accessibility
  • Bachprofil
  Coordinates
  • (2670550 / 1273020)
  Note
  • 2 km E Küssaburg (Gygi 1991 Fig.4 Profil RG74, Gygi 2000c). Widerspruch Text und Fig. 2 in Gygi (2000b) bezüglich stratigraphischer Position des Crenularis Members.

Palaenography and tectonic

• Malm of the Jura Mountains

Paleogeography

Swabian Basin

Tectonic unit (resp. main category)

• Jura :
  Juragebirge

Kind of protolith

• sedimentary

Metamorphism

non metamorphic

References

Definition

Würtenberger F. J., Würtenberger L. (1866) : Der Weisse Jura im Klettgau und angrenzenden Randengebirg. Verh. natw. Vereins Karlsruhe 2, 11-68

S.30

Definition

Gygi R. A. (2000) : Annotated index of lithostratigraphic units currently used in the Upper Jurassic of northern Switzerland. Eclogae geol. Helv. 93/1, 125-146

p.134: Küssaburg Member (Würtenberger & Würtenberger 1866) ; Member of the Villigen Formation Würtenberger & Würtenberger (1866. p. 30) introduced the name Küssaburg Member (Küssaburg-Schichten) for a succession of bedded, micritic limestones between the Hornbuck Member below and the Wangental Member above. The name is derived from the ruin of Küssaburg southeast of the village of Bechtersbohl in the lower Klettgau valley (southern Germany). LK 1050 Zurzach. There are only insignificant outcrops of the member below the Küssaburg ruin, but a continuous section could be measured in 1962 in the gully called Steiggraben 2 km southwest ofthe village of Geisslingen in the German lower Klettgau valley. This is section RG 74 at coordinates 670.550/273.020 which is less than 2 km east of Küssaburg ruin. The section is represented in Gygi (1991. Fig. 4) and can serve as type section of the Küssaburg Member. The thickness of the Küssaburg Member in the Steiggraben gullv is 32.5 m. Below is the glauconitic Crenularis Member with a sponge bioherm at the base. The top of the Küssaburg Member in the type section RG 74 is marked by the glauconitic bed 46 that belongs to the Knollen Bed. Ammonites are rare in the Küssaburg Member. Gygi & Persoz (1986. table 3 and Pl. 1) mentioned Taramelliceras (Metahaploceras) litocerum (Oppel) ofthe Hauffianum Subchron. Gygi (1969, p. 98 and Fig. 5) claimed to have found fragments of Subnebrodites in the Küssaburg Member. This is based on an error. There is a transition between the Küssaburg Member and the coeval Wangen Member of Canton Aargau. The boundary in figure 1 is drawn arbitrarily along the Rhine river that is the boundary between Switzerland and Germany north of Mellikon in Canton Aargau.

Important Publications

Gygi R. A. (1969) : Geologische Beschreibung des Aargauer-Jura und der nördlichen Gebiete des Kantons Zürich.

Gygi R. A. (1969) : Zur Stratigraphie der Oxford-Stufe (oberes Jura-System) der Nordschweiz und des süddeutschen Grenzgebietes. Beitr. geol. Karte Schweiz N.F. 136, 143 Seiten