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.326–313 Ma PreꞒ Ꞓ O S D C P T J K Pg N
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

1. Gradstein, Felix M.; Ogg, James G.; Smith, Alan G., eds. (2004). A Geological Time Scale 2004 (3rd ed.). Cambridge University Press: Cambridge University Press. ISBN 978-0521786737.