«Subfurcatum-Bank»
Representation and status
- Color CMYK
- (0%,17%,34%,31%)
- Color RGB
- R: 175 G: 145 B: 115
- Rank
- lithostratigraphic Bed
- Validity
- Unit is in Use
- Status
- incorrect name (though informally used)
- Status discussion
Nomenclature
- Deutsch
- «Subfurcatum-Bank»
- Français
- «Banc à Subfurcatum»
- Italiano
- «Strato di Subfurcatum»
- English
- «Subfurcatum Bed»
- Origin of the Name
-
Namengebendes Fossil: Ammonitenart Garantiana (Pseudogarantiana) subfurcata (Zieten 1830) [früher Strenoceras].
- Historical Variants
-
Subfurcatenschichten (Schalch 1897, Schalch 1916, Tobler 1905 Tab.6b), Subfurcaten-Schichten (Frank 1939, Schmassmann 1945), Obere Blagdenischichten = couches à Strenoceras subfurcatum = calcaires de Minversheim (Théobald 1948), Subfurcaten Beds = Subfurcaten Schichten = Couches à subfurcatum (Gonzalez & Wetzel 1996)
Description
- Description
-
Knauerige Schillkalklage mit Pseudomonotis echinata Sowerby an der Basis zwischen Klingnau und Zurzach/Achenberg (Tafeljura).
- Thickness
- Wenige cm bis dm mächtig (Gonzalez & Wetzel 1996).
Components
- ammonites
Hierarchy and sequence
- Superordinate unit
- Units at roof
- Units at floor
- Upper boundary
-
Untere Parkinsoni-Schichten
- Lower boundary
-
Blagdeni-Schichten
Age
- Age at top
-
- late Bajocian
- Age at base
-
- late Bajocian
- Dating Method
-
Biostratigraphie: Ammoniten der Niortense/Subfurcatum-Zone (Gonzalez & Wetzel 1996)
Geography
- Geographical extent
- Westgrenze: Linie Gansingen-Schinznach, Ostgrenze: nicht definiert (Landesgrenze?).
- Type profile
-
-
Eschenhau b. Schleitheim (SH)
Coordinates- (2681600 / 1289650)
- Schalch 1897 und 1916, Schmassmann 1945, Gonzalez 1933 (anstatt Tuniberg in Mühlberg 1900).
-
Eschenhau b. Schleitheim (SH)
- Reference profiles
-
-
Tuniberg (zwischen Niederrimsingen und Tiengen), Baden-Württemberg
Note- Als Typlokalität bei Mühlberg 1900 betrachtet.
-
Tuniberg (zwischen Niederrimsingen und Tiengen), Baden-Württemberg
Palaenography and tectonic
-
- Dogger of the Jura Mountains
- Paleogeography
- Swabian Basin
- Tectonic unit (resp. main category)
-
-
Jura
:
Juragebirge
-
Jura
:
- Kind of protolith
-
- sedimentary
- Metamorphism
- non metamorphic
References
- Definition
- (1897) : Der braune Jura (Dogger) des Donau-Rheinzuges. Mitt. Grossh. Badischen Geol. Landesanstalt, III/3, 528-773
- Definition
-
(1996) :
Stratigraphy and paleogeography of the Hauptrogenstein and Klingnau Formations (middle Bajocian to late Bathonian), northern Switzerland Eclogae geol. Helv. 89/2, 695-720
p.704: Three lithologically similar horizons can be discriminated within the Klingnau Formation. They are all a few centimeters to decimeters thick and consist of bioturbated bioclastic beds often containing ammonites: the Subfurcaten Beds at the top of the lower third of the succession (Niortense/Subfurcatum Zone), and the Lower and Upper "Parkinsonien Bank" (...) The occurrence of these horizons is somewhat patchy, but they serve as excellent correlation horizons where they occur.