Küssaburg-Member

Rappresentazione e statuto

Colore CMYK

cf. Villigen-Formation

Colore RGB

R: 180 G: 190 B: 210

Rango

Membro litostratigrafico (Sotto-formazione)

Uso

Unità in uso.

Status

termine formale valido

Discussione del statuto

Nomenclatura

Deutsch

Küssaburg-Member

Français

Membre de la Küssaburg

Italiano

Membro della Küssaburg

English

Küssaburg Member

Origine del nome

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

Varianti storiche

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

Nota sul nome

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.

Descrizione

Descrizione

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

Potenza

32,5 m im Typusprofil (Gygi 2000c)

Componenti

• echinodermi

Gerarchia e successione

Unità di rango superiore

• Villigen-Formation

Unità sovrastante

• Wangental-Member
• «Knollen-Bank»

Unità sottostante

• Hornbuck-Member

Limite superiore

Wangental-Mb.

Limite inferiore

Hornbuck-Mb.

Età

Geomorfologia

• Oxfordiano

Osservazioni sul tetto

Bimammatum-Zone, Hauffianum-Subzone

Età alla base

• Oxfordiano

Osservazioni sulla base

Bimammatum-Z., Hauffianum-Sz.

Metodo di datazione

Biostratigraphie: Ammoniten (Gygi & Persoz 1986)

Geografia

Estensione geografica

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

Regione-tipo

unteres Klettgau-Tal, Süddeutschland

Località-tipo

• Ruine Küssaburg (Deutschland)
  Caratteristiche del sito
  • historische Fundstelle
  Agibilità del sito
  • Grat
  Coordinate
  • (2668810 / 1272760)
  Nota
  • SE Bechtersbohl, unteres Klettgau-Tal

Sezione-tipo

• Steiggraben (Deutschland)
  Caratteristiche del sito
  • typische Fazies
  Agibilità del sito
  • Bachprofil
  Coordinate
  • (2670550 / 1273020)
  Nota
  • 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.

Paleogeografia e tettonica

• Malm (Jura)

Paleogeografia

Swabian Basin

Termini generici

• Jura :
  Juragebirge

Tipo di origine

• sedimentaria

Metamorfismo

non metamorfo

Referenze

Definizione

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

S.30

Revisione

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.

Pubblicazioni importanti

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