Kalmarsund sandstone
The Kalmarsund sandstone or Kalmarsund quartzite comes from the Ediacarian (Eocambrian) Scandinavia (550 million years ago) from the east coast of Småland and Blekinge . It sits there on an old beach terrace that slopes flat into Kalmar Sound. Upcoming it occurs in a five to ten kilometer wide coastal strip on the Småland mainland and forms the subsoil of Kalmar Sound.
The red / beige banded fine-grain sandstone was deposited in shallow water, as indicated by the unrolled quartz grains, the binding agent hematite and the inclined stratifications that occur frequently . In addition to the normal stratification, the Kalmarsund sandstone shows a striking stripe that does not follow the stratification, but is due to the oxidation and precipitation of brown iron during the deposition. If these bands cross in diverging directions, one speaks of the Chiasma sandstone (from Greek χι ), which is only known from Kalmarsund.
The famous fossil Xenusion auerswaldae comes from the Kalmarsund sandstone .
The Kalmarsund sandstone occurs frequently in the northern debris ; it is a guide attachment .
literature
- Werner Schulz: Geological guide for the north German bed load collector . cw Verlagsgruppe, Schwerin 2003, ISBN 3-933781-31-0 , p. 197, 203 .
- Per Smed: Stones from the north: sediments as witnesses to the Ice Age in northern Germany . 1st edition. Borntraeger, Berlin / Stuttgart 1994, ISBN 978-3-443-01046-1 , pp. 162 (Danish: Sten i det danske landskab . Translated by Jürgen Ehlers).
- Frank Rudolph: Beach stones: Collecting and determining stones on the Baltic coast . 3rd, corrected and enlarged edition. Wachholz, 2005, ISBN 978-3-529-05409-9 , pp. 95 .
Web links
- Chiasma sandstone / Kalmarsund sandstone. Retrieved July 31, 2012 .
- Kalmarsund sandstone. Retrieved July 31, 2012 .