Note 320 — Chapter XLII · THE BASIC SILLS OF THE BASALT-PLATEAUX
Reading edition
This locality has been described by Professor Judd (Quart. Jour. Geol. Soc. xxx. (1874), p. 261; and xlvi. (1890), p. 373).
[321] As amygdaloidal structure is occasionally to be found among both dykes and sills its presence in the Ben Hiant rocks would not be inconsistent with their intrusive origin.