| Computer Code: |
SHSI |
Preferred Map Code: |
SS |
| Status Code: |
Full |
| Age range: |
Bolsovian Substage (CC)
— Bolsovian Substage (CC) |
| Lithological Description: |
Olivine basalt. |
| Definition of Lower Boundary: |
Sharp boundary with chilled margin and some baking of bedding ranging from the middle part of the Pennine Coal Measures Group in Eymore Wood in the south [782 797] to the lower part of the Etruria Formation near Witnells End in the north [795 815]. Locally vesicular at base. |
| Definition of Upper Boundary: |
Upper contact demonstrates complex interfingering of the basalt and the country-rock, partly altered, ranging from the middle part of the Pennine Coal Measures Group in Eymore Wood in the south [782 797] to the lower part of the Etruria Formation near Witnells End in the north [795 815]. Locally vesicular at top. |
| Thickness: |
About 15 m at type area. A minimum thickness of 8.6 m is present at the bottom of the Shatterford Deep Sinking (SO78SE/15) [SO 7901 8103]. |
| Geographical Limits: |
Extends 3.6 km from Eymore Wood [SO 781 797] to Arley Wood [SO 801 828], near Shatterford. |
| Parent Unit: |
Clee Hill Microgabbro Sill-swarm (CLEE)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Series of disused quarries [7984 8216-7968 8175]. Base and top not seen. Up to 15 m of fine basalt, spheroidally weathered. 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
|
