A PDF of this report is available from the NORA, the NERC archive Barron, H F, Gillespie, M R and Merritt, J W 2011. Geodiversity of the Cairngorms National Park. British Geological Survey Open Report, OR/10/019

Site no.: B18

Site name: Bridge of Brown

Grid reference: [NJ 12236 20835]

Locality: WNW of Tomintoul

GCR Status: Proposed

GCR No.: 0

Type: Natural section

Description: The site encompasses Dalradian strata exposed around Burn of Brown where it flows through a narrow incised gorge in the area where the original (General Wade) road crossed the burn. The GCR volume 'Dalradian rocks of Scotland' (Stephenson et al., 2010) contains a full description of the site.

Justification: The site presents a geological section through an important part of the Dalradian stratigraphy. It is one of the few coherent sections through the Grampian Group - Appin Group boundary, and demonstrates the transitional nature of the boundary in this part of the Grampians. The Bridge of Brown site is complementary to the nearby Bridge of Avon GCR site in that it extends the stratigraphical section down through the lower part of the Appin Group and into the Grampian Group. It also continues the structural cross-section to a lower level.

References