| Computer Code: |
STE |
Preferred Map Code: |
STE |
| Status Code: |
Full |
| Age range: |
Chadian Substage (CI)
— Chadian Substage (CI) |
| Lithological Description: |
Can be divided informally into a lower unit of interbedded porcellanous limestones, argillaceous limestones, sandstones and mudstones c.25 metres thick and an upper unit of mostly porcellanous limestone with some flaggy dolomites c. 55 metres + thick. Overlying Coldbeck Limestone comprises dark grey, fine-grained limestones with interbedded mudstone and flaggy dolomite in which algal macrostructures are common. Underlying Shap Conglomerate comprises green/brown/red sandstones, siltstones mudstones and conglomerates. |
| Definition of Lower Boundary: |
At depth of 49.73 metres in Wyegarth Gill No.1 Borehole (NY 7201 0355). |
| Definition of Upper Boundary: |
Overlain by Coldbeck Limestone Formation. |
| Thickness: |
Estimated thickness in Ravenstonedale area (based on Wyegarth Gill No.1 Borehole and Stone Gill) is about 100m. It thins slightly westward to c.80m on NY60NW. |
| Geographical Limits: |
Not defined. |
| Parent Unit: |
Ravenstonedale Group (RVS)
|
| Previous Name(s): |
Stone Gill Limestone [Obsolete Name and Code: Use STE]
(-2454)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Pattison, J. 1990. Geology of the Orton and Sunbiggin Tarn districts. Geological notes and local details for 1:10,000 Sheets NY60NW and NY60NE and part of 1:50,000 Sheets 30 (Appleby), 31 (Brough), 39 (Kendal) and 40 (Kirkby Stephen). British Geological Survey Onshore Geology Series, Technical Report, WA/90/12. |
| Garwood, E J. 1907. Geology of Teignmouth Parish, ("History of Northumberland"). Museum Pamphlet, Northumberland, p.73. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E040
|
