Computer Code: |
BIML |
Preferred Map Code: |
BIML |
Status Code: |
Pending Upgrade |
Age range: |
Ludlow Epoch (SU)
— Ludlow Epoch (SU) |
Lithological Description: |
Grey interbedded mudstones and siltstones; thin siltstones show parallel lamination, thicker beds are calcareous and commonly show intense convolute lamination. |
Definition of Lower Boundary: |
Upward change in lithology from grey thickly bedded (blotchy) mudstone to grey interbedded siltstones and mudstones; thicker siltstones are calcareous and commonly show intense convolute lamination. |
Definition of Upper Boundary: |
Not seen in area of survey. |
Thickness: |
c. 125m. Lateral variations 0-400m. |
Geographical Limits: |
Not defined. |
Parent Unit: |
Not Entered (?)
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Section |
Sheet 165. |
Reference(s): |
Allender, R. 1959. On the stratigraphy and structure of an area of Ludlowian and Lower Downtonian near Bishops Castle, Shropshire. Unpublished Ph.D. Thesis, University of Wales. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
E152
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