Transactions of the Geological Society

Ammonites basalt beds beneath Blackdown bottom brown-coal Bucks calcareous carboniferous chalk chert Chine cliff coal coast colour concretions conglomerate contains Court-at-Street Cyclas Cypris deposits east elevation escarpment fault feet thick ferruginous Folkstone formation fossils fragments freshwater Gault Geol Geological greenish grey grit heights Hill I.of inches Isle of Portland Isle of Purbeck Isle of Wight Kent Kimmeridge clay lime limestone loess London Lower green-sand marl masses miles millstone grit mountain nearly north-west occur oolite Ostrea Oxford oolite Pecten pits Plate portion Portland sand Portland stone Pulborough quarries range red sandstone ridge river road rock sand-rock sandy shale shells shore side slate slaty species specimens strata stratum surface Suss Sussex thence thin trachyte tract tuff Upper green-sand Vale of Wardour valley Weald clay Wealden Weymouth