Læså Formation
The Læså Formation is a lower Cambrian unit exposed on the Baltic island Bornholm, comprising two members: the lower, the Broens Odde Member, colloquially and previously informally termed "green shales" (Grønne Skifre), a 100 m thick glauconitic silt-sandstone occasionally bearing extremely acritarch-rich phosphatic pebbles;[1] gradually transitioning upwards into the upper, the 3 m thick Rispebjerg Member, a sandstone.[2]
Læså running through the meadow in the bottom of Ekkodalen on the island of Bornholm, Denmark
| Læså Formation | |
|---|---|
Stratigraphic range: | |
| Type | Geological formation |
| Sub-units | Broens Odde Member, Rispebjerg Member |
| Overlies | Hardeberga Formation |
| Thickness | approx. 103 metres (340 ft) |
| Location | |
| Region | Bornholm |
| Country |  Denmark |
References
- Vidal G. 1981. Lower Cambrian acritarch stratigraphy in Scandinavia. GFF. 103:183–192.
- Clausen C.K., Vilhjálmsson M. 1986. Substrate control of lower Cambrian trace fossils from Bornholm, Denmark. Palaeogeogr. …Palaeoclimatology, Palaeoecol. 56:51–68.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.