British Geological Survey, St. Kilda, 1:25,000. Special sheet.
London :  British Geological Survey, 
1984.
Surveyed on the 1:10,000 and 1:2500 scales in 1979-80 by R.R. Harding, R.J. Merriman and P.H.A. Nancarrow.
With: St. Kilda, an illustrated account of the geology. (BGS report; vol. 16, no. 7).