St. Ingbert formation

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Lithostratigraphic structure of the permocarbon of the Saar-Nahe basin, abbreviations: O. = Upper, M. = Middle, U. = Lower, Subgr. = Subgroup, Nierst.-F. = Nierstein formation

In the history of the earth, the St. Ingbert Formation is a lithostratigraphic rock unit in the Upper Carboniferous of the Saar-Nahe basin . It lies on the Neunkirchen formation and is followed by the Rothell formation . It is dated in the border area Westfalium A / B ( Oberkarbon or Pennsylvanium ).

Naming and conceptual history

The St. Ingbert formation is named after the town of St. Ingbert in the Saarpfalz district (Saarland). The name was already used in 1914 by Paul Kessler as "St. Ingberter Flözgruppe" in literature.

Definition, Correlation and Age

The St. Ingbert Formation begins with a clearly defined base conglomerate and ends at the base of Seam South 1. Overall, the St. Ingbert Formation contains coal seams No. 105 to 82 (of the total of 151 coal seams drilled in the Saar 1 research well) . In the Saar 1 research well, it is 280 m thick. The formation contains mostly fine sandstone with several "fining-upward" cycles, i.e. H. the grain sizes decrease upwards. After this sequence of sandstones, the deposition in an anastomosing river is most likely. According to the pile content, the formation is placed in the Westfalium C. In the STD2002, on the other hand, the St. Ingbert Formation is placed in the border area Westfalium A / B ( Langsettium / Duckmantium ).

The base conglomerate appears in the geophysical exploration of the Saar-Nahe basin as reflector S 'and plays an important role in the correlation of seismic profiles.

structure

The St. Ingbert formation is not further subdivided. Together with the Rothell and Sulzbach formation, it forms the Middle Saarbrücken Group.

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

  1. ^ Paul Kessler: Attempt to determine the time of the disturbance processes in the Saar-Nahe area. Geological-Palaeontological Treatises, New Series, 13: 125-220, Jena 1914 Online at archive.org
  2. ↑ Stratigraphic table from Germany 2002

Web links