Iller breakthrough in Oberkottern
The Iller breakthrough in Upper Kottern is a geological site in the conservation area "Iller" in Kempten (Allgäu) . In a narrowing of the valley cross-section of the Iller z. T. strongly solidified feldspathic sandstones and conglomerates in alternation with ocher marl stones of the Lower Freshwater on.
Over a length of 80 meters and a width of 35 meters, the more weather-resistant rocks form a massive rock rib in the border area of the folded molasses and the unfolded foreland molasses in the area of the Allgäu molasse foothills. In the border area between the Allgäu and Upper Swabia , these strongly consolidated, hard rocks are also known as so-called "granitic molasses".
The sandstones and conglomerates poured into the sedimentary basin north of the Alps by rivers are genetically derived from the Swiss crystalline areas. The sediments were deposited in the Oligocene to Miocene .
The rocks are on the embankment and in the river bed , where they were partially built over by a dam wall of a hydropower plant .
In 2007 the outcrop was designated as a locally significant geotope (geotope no. 763A002) and protected as a biotope (biotope no. X8327-383) by the Bavarian State Office for the Environment .
See also
Individual evidence
- ↑ a b Walter Freudenberger and Klaus Schwerd: Explanations of the Geological Map of Bavaria 1: 500,000 ., 4th edition, Munich 1996, 329 pp.
- ↑ Geotope data sheet of the Bavarian State Office for the Environment: Geotope no. 763A002 Iller breakthrough at Oberkottern , accessed on July 21, 2014
Web links
- Geotope data sheet of the Bavarian State Office for the Environment: Geotope no. 763A002 Iller breakthrough at Oberkottern , accessed on July 21, 2014
Coordinates: 47 ° 41 ′ 52.9 ″ N , 10 ° 19 ′ 3.3 ″ E