The BGS Lexicon of Named Rock Units — Result Details

Johnshaven Formation [Obsolete Name And Code: See CATC]

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: Arbuthnott Group [Obsolete Name And Code: See Arbuthnott-Garvock Group] (ATG)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
none recorded or not applicable
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 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable