Note 67 — Chapter VIII · PRE-CAMBRIAN VOLCANOES
Reading edition
Quart. Journ. Geol. Soc. vol. xxxiii. (1877) p. 449.
[68] Op. cit. vol. xxxv. (1879) p. 662; vol. xxxviii. (1882) p. 124.
Reading edition
Quart. Journ. Geol. Soc. vol. xxxiii. (1877) p. 449.
[68] Op. cit. vol. xxxv. (1879) p. 662; vol. xxxviii. (1882) p. 124.