Note 113 — Chapter XXXII · PERMIAN VOLCANOES OF ENGLAND
Reading edition
See J. R. Wright, Trans. Geol. Soc. (2nd ser.) iii. (1832), p. 487. Titterstone Clee Hill is shown on Sheet 55 N.E. and N.W. of the Geological Survey, and in Horizontal Sections, Sheets 33 and 36, from which Fig. 232 is reduced. The microscopic structure of the dolerite has been described by Mr. Allport, Geol. Mag. 1870, p. 159; Quart. Journ. Geol. Soc. xxx. (1874), p. 550.