Note 469 — Chapter XXVII · GEOLOGICAL STRUCTURE OF THE CARBONIFEROUS PUYS OF SCOTLAND
Reading edition
This rock has been described by Mr. J. Henderson and Mr. Goodchild, Trans. Geol. Soc. Edin. vi. (1893) pp. 297, 301, and by Mr. H. W. Monckton, Quart. Journ. Geol. Soc. l. (1894) p. 39. Mr. Goodchild recognized the occurrence of picrite, and Mr. Monckton has described the succession of rocks, and given a diagram of them.