Messel Formation
The Messel Formation is a geologic formation in Hesse, central Germany, dating back to the Eocene epoch (about 47 Ma). Its geographic range is restricted to the Messel pit. There it unconformably overlies crystalline Variscan basement and its Permian cover (Rotliegend) as well as Eocene volcanic breccias derived from the basement rocks. The formation mainly comprises lacustrine laminated bituminous shale (‘oil shale’) renowned for its content of fossils in exceptional preservation, particularly plants, arthropods and vertebrates (e.g. Darwinius masillae).
| Messel Formation | |
|---|---|
| Stratigraphic range: Eocene, ~ | |
Weathered bituminous shale of the Messel Formation | |
| Type | Formation |
| Underlies | Eocene volcanic breccias |
| Overlies | Rotliegend |
| Thickness | around 200 metres (660 ft) |
| Location | |
| Region | Hesse |
| Country | Germany |
| Type section | |
| Named for | Messel |
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