| Computer Code: |
BBDY |
Preferred Map Code: |
BBDy |
| Status Code: |
Full |
| Age range: |
Bolsovian Substage (CC)
— Bolsovian Substage (CC) |
| Lithological Description: |
Ophitic olivine microgabbro (dolerite) with augite, labradorite-andesine and minor magnetite. |
| Definition of Lower Boundary: |
Sharp sub-vertical boundary with sandstone of the Downton Castle Sandstone Formation. Locally, microgabbro (dolerite) intrudes as thin sills in the flaggy lower beds of the sandstone. |
| Definition of Upper Boundary: |
none recorded or not applicable
|
| Thickness: |
At least 3 m. |
| Geographical Limits: |
1.8 km long outcrop, trends northwest-southeast [SO 9349 8778–9364 8770], southwest of Netherton. |
| Parent Unit: |
Dudley Basaltic Sill-and-vent-swarm (DUDB)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Dudley Canal Cutting. Southeast margin of intrusion has sharp contact with Downton Castle Sandstone Formation. Interpreted as intrusion along an existing fault plane. Described by Whitehead and Pocock (1947). |
| Reference(s): |
| Whitehead, T H and Pocock, R W. 1947. Geology of the country around Dudley and Bridgnorth. Memoir of the British Geological Survey, Sheet 167. (England and Wales). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E167
|
