Spiesen formation
In the history of the earth, the Spiesen Formation is a lithostratigraphic rock unit in the Upper Carboniferous of the Saar-Nahe basin . It stands at the base of the permo-carbonic rock sequence of the Saar-Nahe basin. It lies discordantly on the Lower Carboniferous and is overlaid by the Neunkirchen formation .
Naming and conceptual history
The rocks of the Spiesen Formation do not come to light in the Saar-Nahe Basin, but have only been detected in the Saar 1 research well. The Spiesen formation is named after the Spieser Höhe, the starting point of the Saar 1 research well. Their name comes from the place Spiesen (Gem. Spiesen-Elversberg ) in the district of Neunkirchen ( Saarland ). The term was first introduced into scientific literature in 1976 by Hans Wilhelm Weingardt as “Spies layers”.
Definition, age and storage space
The Spiesen Formation is a coarse-clastic bed which introduces the continental, permo-carbon filling of the Saar-Nahe basin. It lies discordantly on the marine lower Carboniferous ( Viséum ). The upper limit is the carbon-bearing upper carbon. It is 44 m thick in the Saar 1 borehole and consists of coarse conglomerates at the base. The components become finer and finer towards the higher part of the formation; it ends with a pelite horizon . Overall, the formation can be seen as a "fining-upward" cycle. The deposit probably took place in an alluvial fan . The material consists of rubble from the Saxothuringian and was delivered from the south. The Spiesen Formation is almost fossil-free and, due to its location below the coal-bearing strata of the Saar-Nahe basin, which are placed in Westfalium A due to their flora , is dated to the Namurian .
swell
literature
- 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
- Hans Wilhelm Weingardt: The upper carbon in the deep borehole Saar 1st Geological Yearbook, Series A, 27: 399-408, Hanover 1976
Web links
- German Stratigraphic Commission (Ed.): Stratigraphische Tisch von Deutschland 2002 . Potsdam 2002 ISBN 3-00-010197-7 - PDF (6.7 MB) (abbreviated STD2002)