Page:Geological Evidences of the Antiquity of Man.djvu/238

loose sand, loam, and pebbles, are so complicated that not only may we sometimes find portions of them which maintain

Fig. 29

Cliff 50 feet high between Bacton Gap and Mundesley.

their verticality to a height of ten or fifteen feet, but they have also been folded upon themselves in such a manner that continuous layers might be thrice pierced in one perpendicular boring.

At some points there is an apparent folding of the beds round a central nucleus, as at a, fig. 30, where the strata seem

Fig. 30 Folding of the strata between East and West Runton.

Fig. 31 Section of concentric beds west of Cromer. 1 Blue clay. 3 Yellow sand. 2 White sand. 4 Striped loam and clay. 5 Laminated blue clay.

bent round a small mass of chalk, or, as in fig. 31, where the blue clay, No. 1, is in the centre; and where the other strata, 2, 3, 4, 5, are coiled round it; the entire mass being twenty