| Computer Code: |
OWSH |
Preferred Map Code: |
OwSh |
| Status Code: |
Full |
| Age range: |
Merioneth Series (EM)
— Merioneth Series (EM) |
| Lithological Description: |
Interbedded grey burrowed, and dark-grey or greenish grey pyritic, mudstone. Beds of siltstone and sandstone increase in upper part. |
| Definition of Lower Boundary: |
Transitional passage, with decreasing proportion of bioturbated, erosionally-truncated beds in upper part. |
| Definition of Upper Boundary: |
Transitional passage into the Moor Wood Sandstone Formation by increase in silty and sandy beds and decrease in dark-grey, pyritic and carbonaceous material. |
| Thickness: |
300m in general: 87m minimum in Merevale No.1 borehole; 158m minimum in Merevale No.3 borehole. |
| Geographical Limits: |
Extends from eastern suburbs of Bedworth, northwest to just east of Merevale Hall. (SP 3688 8633-2986 9758) |
| Parent Unit: |
Stockingford Shale Group (SSH)
|
| Previous Name(s): |
Outwoods Shales [Obsolete Name and Code: Use OWSH]
(-2356)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Partial Type Section |
At Oldbury Quarry, 500m northwest of Oldbury. |
| Reference Section |
(Including lower boundary) Merevale No.3 Borehole (SP39NW/7) 0-518ft 3ins. |
| Reference Section |
(Including upper boundary) Merevale No.1 Borehole (SP29NE/16) 427'5" to 714"0" (base not penetrated) |
| Reference(s): |
| Baldock, J W. 1991. Geology of the Hartshill and Stockingford districts, Nuneaton. British Geological Survey Technical Report, WA/91/60. |
| Illing, V C, 1913. Recent discoveries in the Stockingford Shales near Nuneaton. Geological Magazine, Vol.10/5, p.452-453. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E169
E155
|
