Note 194 — Chapter XIII · THE ERUPTIONS OF LLANDEILO AND BALA AGE
Reading edition
"The Felsitic Lavas of England and Wales," Mem. Geol. Survey (1885), pp. 16, 18.
[195] British Petrography, pp. 224, 284, 336.
Reading edition
"The Felsitic Lavas of England and Wales," Mem. Geol. Survey (1885), pp. 16, 18.
[195] British Petrography, pp. 224, 284, 336.