Geisheck Formation
In geological history, the Geisheck Formation is a lithostratigraphic rock unit in the Upper Carboniferous of the Saar-Nahe basin . It follows the Sulzbach Formation and is overlaid by the Luisenthal Formation . It is dated to the Westfalium D ( Upper Carboniferous or Pennsylvanian ).
Naming and conceptual history
The Geisheck formation is named after the Geisheck shaft near Heinitz (Neunkirchen). The name was originally introduced as Geisheck Strata and was later formally changed lithostratigraphically to Geisheck Formation.
Definition, Correlation and Age
The lower limit forms the basis of seam 1 Stolberg, the upper limit the claystone horizon 2. The formation consists of alternating coarse-sand to fine-gravel beds with pelitic intermediate layers. The layers were deposited by ramified rivers or weakly meandering rivers. The Geisheck strata are dated to Westfalium D by Schäfer, whereas the Stratigraphic Table of Germany places them in the higher part of Westfalium C ( Bolsovium ).
structure
The Geisheck Formation, together with the Luisenthal Formation and the Heiligenwald Formation, form the Upper Saarbrücken Group. It is formally lithostratigraphically not further subdivided into subformations.
Fossils
The Geisheck Formation is known for the remains of insects from dragonflies. It also contains numerous plant fossils.
swell
literature
- Manfred Menning, Reinhard Benek, Jürgen Boy, Bodo-Carlo Ehling, Frank Fischer, Birgit Gaitzsch, Reinhard Gast, Gotthard Kowalczyk, Harald Lützner, Wolfgang Reichel and Jörg W. Schneider: Das Rotliegend in the Stratigraphic Table of Germany 2002 - "Paternoster- Stratigraphy "on the decline. Newsletters on Stratigraphy, 41 (1-3): 91-122, Stuttgart 2005 ISSN 0078-0421
- Andreas Schäfer: Sedimentologically-numerically based stratigraphic standard for the permo-carbon of the Saar-Nahe basin. Courier Forschungsinstitut Senckenberg (Stratigraphie von Deutschland V - Das Oberkarbon (Pennsylvanium) in Germany), 254: 369-394, Frankfurt 2005 ISBN 3-510-61380-5
Individual evidence
- ↑ Stratigraphic table from Germany 2002
- ^ Paul Guthörl: On the arthropod fauna of the Carboniferous and Permian 16. Frankenholzia culmanni ngn sp. (Ins., Palaeodict.) From the Westphalian D of the Frankenholz-Saar mine. Paläontologische Zeitschrift, 36 (3/4): 226-231, Stuttgart 1962
Web links
- German Stratigraphic Commission (Ed.): Stratigraphische Tisch von Deutschland 2002 . Potsdam 2002, ISBN 3-00-010197-7 - PDF; 6.57 MB (large) (abbreviated STD2002)