| Computer Code: |
MOF |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Caradoc Series (O4)
— Caradoc Series (O4) |
| Lithological Description: |
Welded massive tuff and lapilli-tuff grading into polymict pyroclastic breccia. |
| Definition of Lower Boundary: |
Not seen. |
| Definition of Upper Boundary: |
Overlain by Broom Farm Formation - marked by change to volcaniclastic sandstone (bedded). |
| Thickness: |
114.5m minimum; base not proved (uncorrected for structural dip or borehole deviation). |
| Geographical Limits: |
Only seen in Sellafield BH No.2 (NY00SE/28) |
| Parent Unit: |
Borrowdale Volcanic Group (BVG)
|
| Previous Name(s): |
Moorside Farm Formation [Obsolete Name and Code: Use MOF]
(-3557)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Partial Type Section |
Nirex borehole No. 2, BGS Registered No. NY00SE/28, 1495.5m - 1520.2m below Rotary Table Elevation, 1430.3m - 1455.0m below OD. |
| Reference(s): |
| Millward, D, Beddoe-Stephens, B, Williamson, I T, Young, S R, and Petterson, M G. 1994. Lithostratigraphy of a concealed caldera-related ignimbrite sequence within the Borrowdale Volcanic Group of west Cumbria. Proceedings of the Yorkshire Geological Society, Vol.50, part 1, 25-36. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
