| Site Type: | Various |
| Site Status: | |
| Grid Reference: | |
| Google maps: | , |
| Rocks |
|---|
| Rock Age: | Jurassic (Aalenian, Bajocian, Bathonian, Callovian, Hettangian, Kimmeridgian, Lower Jurassic, Middle Jurassic, Oxfordian, Pliensbachian, Portlandian, Sinemurian, Toarcian, Upper Jurassic) |
| Rock Name: | Tircrevan Sandstone Member, Waterloo Mudstone Formation |
| Rock Type: | Limestone, Mudstone |
| Interest |
|---|
| Fossil Groups: | Ammonite, Brachiopod, Crustacea, Gastropod, Microfossil, Microfossils |
| Other interest: | Marine sediments, alluvial plain, shelf |
The Jurassic System is named from the development of rocks of this age in the Jura Mountains of France and Switzerland. Here rocks previously called `Calcaires de Jura' were first recognised as a limestone formation separate from the German Muschelkalk by Alexander von Humboldt in 1795. In Britain the term Jurassic was in use as synonymous with the Oolite Series but excluded the Lias. The stages in the Jurassic are shown in the following table:
TABLE TO BE ADDED
