| Computer Code: |
JMB |
Preferred Map Code: |
JM |
| Status Code: |
Full |
| Age range: |
Comley Series (EC)
— Comley Series (EC) |
| Lithological Description: |
Sandstone, red to maroon fine-grained, feldspathic and glauconitic, in gently-tapering beds with bimodal tabular-planar and trough cross-bedding. Interbedded with red and green colour-variegated siltstone and mudstone. |
| Definition of Lower Boundary: |
Gradational into Tuttle Hill Member. Base taken at lowest bed to show variegation and increased proportions of variegated silty and muddy partings. |
| Definition of Upper Boundary: |
Sharp, erosive contact with grey basal conglomerate or maroon calcareous sandstone of Home Farm Member. |
| Thickness: |
5.5m |
| Geographical Limits: |
From Nuneaton town centre, extending north-west for 5.2km to Worthington Farm, Mancetter (SP 3533 9199 - SP 3192 9572). |
| Parent Unit: |
Hartshill Sandstone Formation (CQ)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
South-east face of Hartshill Quarry, 750m west-south-west of Hill Farm (SP 3425 9360). |
| Reference(s): |
| Brasier, M D, Hewitt, R A, and Brasier, C J. 1978. On the late Precambrian - Early Cambrian Hartshill Formation of Warwickshire. Geological Magazine, Vol. 115/1, 21-36. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
