Klerf Formation
Klerf Formation Stratigraphic range: Emsian ~ | |
---|---|
Type | Geological formation |
Sub-units | Reifferscheid Mb. Altenberg Mb. Unterpreth Mb. |
Underlies | |
Overlies | |
Thickness | 1,300 m (4,300 ft) |
Lithology | |
Primary | Siltstone, shale |
Other | Sandstone |
Location | |
Location | Eifel |
Coordinates | 50°14′48″N 06°27′21″W / 50.24667°N 6.45583°WCoordinates: 50°14′48″N 06°27′21″W / 50.24667°N 6.45583°W |
Region | Rhineland-Palatinate |
Country | ![]() |
Type section | |
Named by | Richter |
Location | near Prüm |
Year defined | 1919 |
Coordinates | 50°14′48″N 06°27′21″W / 50.24667°N 6.45583°W |
Approximate paleocoordinates | 27°06′S 9°42′E / 27.1°S 09.7°E |
Region | Eifel |
Country | ![]() |
![]() Avalonia with the Proto-Tethys Ocean (3) |
The Klerf Formation is an Early Devonian (Emsian) formation that includes a Lagerstätte in the Northern Eifel hills, at near Prüm, Rhineland-Palatinate, Germany. In it Jaekelopterus rhenaniae, a giant eurypterid was discovered. The Klerf Formation, comprising greenish and reddish shales, siltstones and sandstones, was first described in 1919 by Rudolf Richter (1881-1957) and reaches a maximum thickness of about 1,300 metres (4,300 ft).[1]
Depositional environment[]
The siltstone and sandstone formation was deposited in an estuarine to deltaic environment.[2] This was located on the edge of Avalonia bordering the Proto-Tethys Ocean.
Fossil content[]
![Jaekelopterus Size 2.svg](http://upload.wikimedia.org/wikipedia/commons/thumb/a/ab/Jaekelopterus_Size_2.svg/100px-Jaekelopterus_Size_2.svg.png)
Apart from the largest arthropod, Jaekelopterus (shown on the left), found in the formation, it also preserved the fish, bryozoa, brachiopod and ostracod remains,[1] the arachnids , ,[2] and and flora.[3]
See also[]
- List of fossiliferous stratigraphic units in Europe
- Geology of Germany
- Floresta Formation
- Old Port Formation
References[]
- Geologic formations of Germany
- Devonian Germany
- Devonian System of Europe
- Devonian southern paleotemperate deposits
- Emsian Stage
- Siltstone formations
- Shale formations
- Sandstone formations
- Deltaic deposits