| Computer Code: |
JNF |
Preferred Map Code: |
notEntered |
| Status Code: |
Index Level |
| Age range: |
Early Devonian Epoch (DL)
— Early Devonian Epoch (DL) |
| Lithological Description: |
none recorded or not applicable
|
| Definition of Lower Boundary: |
The top of the uppermost lava flow of the Crawton Volcanic Formation. |
| Definition of Upper Boundary: |
Diachronous with the base of Montrose Volcanic Formation in the Johnshaven area. Further to the south-west, it passes upwards and laterally into the Dundee Formation (cf Cameron and Stephenson, 1985, fig.11). |
| Thickness: |
none recorded or not applicable
|
| Geographical Limits: |
The coastal area between Johnshaven and Stonehaven, on the south-east limb of the Strathmore Syncline, on Sheets 57E, 57W, 66E and 67. |
| Parent Unit: |
none recorded or not applicable
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Carroll, S. 1994. Geology of the Inverbervie and Catterline district, 1:10 000 sheets NO87NW, NO87NE and NO87SW. British Geological Survey, Technical Report, WA/94/20. |
| Armstrong, M, and Paterson, I B. 1970. The Lower Old Red Sandstone of the Strathmore Region. Report of the Institute of Geological Sciences No. 70/12 |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
