| Computer Code: |
MORDS |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Chadian Substage (CI)
— Holkerian Substage (CQ) |
| Lithological Description: |
Medium-grained, upward fining sandstone. |
| Definition of Lower Boundary: |
Contact of sandstone with underlying mudstone and siltstone of the Fell Sandstone Formation (undifferentiated). |
| Definition of Upper Boundary: |
Contact of sandstone with overlying mudstone and siltstone of the Fell Sandstone Formation (undifferentiated). |
| Thickness: |
0 to 15m |
| Geographical Limits: |
In the area southwest of Berwick-upon-Tweed the Fell Sandstone Formation consists of several sandstone members separated by variable thicknesses of mudstone and siltstone. The Middle Ord Sandstone Member is the lower of three members and is found in the region of Newburn Farm, north Northumberland. |
| Parent Unit: |
Fell Sandstone Formation (FELL)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Reference Section |
The unit is known from the Royalty Observation borehole (NT94NW7) between 13 and 26m depth. Turner et al., 1993. |
| Reference Section |
Former quarry near the Salutation Inn, now infilled with no exposure. Described by Fowler (1929). Identified by Turner et al (1993) as part of the Peel Knowe Sandstone, but now assigned to the Middle Ord Sandstone Member. |
| Reference(s): |
| Fowler, A. 1926. The geology of Berwick-upon-Tweed. Norham and Scremerston. Memoir of the Geological Survey of Great Britain. (London: HMSO.) |
| Turner, B R, Younger, P L and Fordham, C E. 1993. Fell Sandstone Group lithostratigraphy south-west of Berwick-upon-Tweed: implications for the regional development of the Fell Sandstone. Proceedings of the Yorkshire Geological Society. Vol.49, Part 4, 269-281. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
