Note 450 — Chapter XXVI · THE CARBONIFEROUS PUYS OF SCOTLAND
Reading edition
Memoir on Sheet 32 Geol. Surv. Scotland (1861), p. 42. The stratigraphical position of these "Houston Marls," as they are locally called, is indicated in Fig. 155.
Reading edition
Memoir on Sheet 32 Geol. Surv. Scotland (1861), p. 42. The stratigraphical position of these "Houston Marls," as they are locally called, is indicated in Fig. 155.