| Computer Code: |
SBT |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Famennian Age (DA)
— Tournaisian Age (CT) |
| Lithological Description: |
Black, sandy micaceous slates and pale greenish grey slates with nodular limestones. Some thick siltstone and fine-grained sandstone horizons. |
| Definition of Lower Boundary: |
Thrust bounded. |
| Definition of Upper Boundary: |
Passes upwards into the Lydford Formation. Lithology changes to shale with breccia. |
| Thickness: |
More than 32m. |
| Geographical Limits: |
Area around South Brentor, East Dartmoor, Devon. |
| Parent Unit: |
Transition Group (Devonian-Carboniferous) (TRG)
|
| Previous Name(s): |
South Brentor Beds [Obsolete Name and Code: Use SBT]
(-3660)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
South Brentor Quarry Isaac, 1983. |
| Reference(s): |
| Isaac, K P, 1983. The tectonic evolution of the eastern part of south-west England: Tectonothermal denudation and weathering histories. Unpublished PhD Thesis, University of Exeter. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E337
E338
|
