Mid-Carboniferous unconformity
The Mid-Carboniferous unconformity is an unconformity located in many countries, such as England (Namurian Series), Thailand, The United States and more. It has been dated to the Namurian, Middle Carboniferous (c.326-313 Ma) and the formation is often noted as being similar to the mid-Carboniferous eustatic event.[1]
| Mid-Carboniferous unconformity | |
|---|---|
| Stratigraphic range: Namurian, Carboniferous, c. | |
 Crags below Knaresborough Castle. There is an unconformity between mid-Carboniferous sandstones at the road level and late Permian grits and limestones above. | |
| Type | Geological formation |
| Underlies | Mississippian-aged rocks |
| Overlies | Pennsylvanian-aged rocks |
| Lithology | |
| Primary | Sandstone |
| Other | Conglomerate |
References
- Gradstein, Felix M.; Ogg, James G.; Smith, Alan G. (eds.). A Geological Time Scale 2004 (3rd ed.). Cambridge University Press. ISBN 978-0521786737.
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