The BGS Lexicon of Named Rock Units — Result Details

Lintrathen Tuff Member

Computer Code: LNP Preferred Map Code: LNP
Status Code: Full
Age range: Pridoli Epoch (SO) — Lochkovian Age (DO)
Lithological Description: A quartz-feldspar-biotite-bearing, vitric tuff of dacitic composition, locally partially welded.
Definition of Lower Boundary: The unconformable base of the quartz-feldspar-biotite-bearing vitric tuff of dacitic composition, or at the incoming of similar rocks towards the top of the Crawton Volcanic Formation.
Definition of Upper Boundary: The top of the quartz-feldspar-biotite-bearing vitric tuff of dacitic composition in the Crawton Volcanic Formation, overlain by strata or lavas of the Arbuthnott-Garvock Group.
Thickness: Up to 150m thick.
Geographical Limits: Dunkeld to Glenbervie.
Parent Unit: Crawton Volcanic Formation (CVF)
Previous Name(s): Glenbervie Porphyry (-2911)
Lintrathen Porphyry (-2912)
Quartz Porphyry Of Lintrathen (-2913)
Lintrathen Ignimbrite (-3538)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Partial Type Section  Stream exposures at Glenbervie. 
Type Section  Section in River Isla, not known in detail. 
Reference(s):
Paterson, I B and Harris, A L. 1969. Lower Old Red Sandstone ignimbrites from Dunkeld, Perthshire. Report of the Institute of Geological Sciences, No. 69/7. 
Browne, M A E, Smith, R A and Aitken, A M. 2001. A lithostratigraphical framework for the Devonian (Old Red Sandstone) rocks of Scotland south of a line from Fort William to Aberdeen. Version 3. British Geological Survey Research Report RR/01/04. 
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:
S056 S056 S066 S066 S057 S057