Schlier (rock)

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Outcrop with pending streak of the Karpatian in Cerová Lieskové in the Slovak part of the Vienna Basin (length of the geologist's hammer : 28 cm)

Schlier is in the regional geology of southern Germany and Austria as used for different colored silty or fine sandy marl ( lime - clay -Sedimente) of the circum- Tertiary basin (IEL Molassebecken and Vienna Basin ). These deposits represent a marine , offshore deposit environment . The name was first introduced into literature in the variant "Schlierf" by the Austrian geographer Christian Keferstein in 1828 as part of a study of the molasses of the Vienna basin and the northern foothills of the Alps. According to Keferstein, this variant comes from the Hausruck area .

Similar to loam , Schlier combines the good drainage capacity of sands with the cation exchange capacity of clays due to its mineral composition and its grain size distribution and therefore mostly forms fertile soils .

The name still comes today u. a. in the names of some stratigraphic units. In the Lower Austrian part of the Molasse Basin, an older Schlier ( Egerium ) is differentiated from the Robulus Schlier ( Ottnangium ).

Furthermore, “Schlier” can be found as part of the name of localities in whose vicinity such sediments occur, u. a. from Schlierbach in Upper Austria and Schliersee in Bavaria.

In the south and west of Styria the Schlier is called Opok ; however, the term opok also includes younger marly rocks and softer soils.

See also

Individual evidence

  1. ↑ Schlier ( memento of March 11, 2013 in the Internet Archive ) in the glossary of the now deactivated Rocky Austria website of the Federal Geological Institute
  2. ^ A b Hans Murawski, Wilhelm Meyer: Geological dictionary. 12th edition, Spektrum, Heidelberg 2010, ISBN 978-3-8274-1810-4 , p. 146
  3. ↑ Christian Keferstein: Observations and views on the geognostic conditions of the northern limestone-alpine chain in Austria and Bavaria. Germany, represented geognostically and geologically and explained with charts and average drawings. Vol. 5, No. 3, 1828, pp. 425-570, urn : nbn: de: bvb: 12-bsb10806113-4 , p. 432 .
  4. ↑ Alois Matura: Geological Map of the Republic of Austria 1: 50,000 - Explanations on sheet 37 Mautern. Federal Geological Institute, Vienna 1989, ISBN 3-900-31266-4 ( online ).