Page:Quarterly Journal of the Geological Society of London, vol. 27.djvu/616

 rises at the base of the cliff, and is overlain by 3 feet of laminated clays with imperfect impressions of plants and traces of shells.

The crag may be traced more or less well at the base of the cliff thence to Sherringham. Here it assumes larger proportions. On one occasion (in 1856) I found several undeterminable bones in the iron pan (crag) lying on the chalk, but no shells ; forty yards further west the crag becomes more sandy, and contains shells. The following is a section taken at the base of this cliff : —

Fig. 30. — Lower part of Cliff west of Sherringham.

6. Boulder-clay (base of). feet.

5. White sand and flint-shingle, with a subordinate bed of laminated clay (x) and a few shells in lower bed (xx) 12 to 14

3. Grey clay, with fragments of wood (Chillesford Clay) 3 to 4

2'. Iron sandstone (pan) with a few shells, overlain at x' by 6 inches of sand with numerous shells, including Tellina balthica 1 to 1-1/2

The pebbly sands (5) continue more or less shelly all the way to Weybourne ; and in places near Weybourne the surface of the chalk under the crag has been pierced by Annelids and by the Pholas crispata, whilst pebbles of chalk bored by Saxicava rugosa are met with in the overlying craggy beds. These lower beds, which Mr. Jeffreys has examined with me, contain the following shells collected on the occasion of several visits : —

Cardium edule. Pholas crispata.

— groenlandicum? Saxicava rugosa.

Cyprina islandica. Venus fasciata.

Astarte compressa.

— borealis. Buccinum undatum.

Mya arenaria. Helix hispida.

Leda lanceolata. Littorina rudis.

Mactra subtruncata. — Littoria.

Nucula Cobboldiae. Natica helicoides.

Tellina balthica. Purpura lapillus.

— lata. Balanus crenatus.

— obliqua. Bones and vertebrae of fish.

Above these shelly sands the bed of clay (3), which I would refer to the Chillesford Clay, can be traced with few interruptions. It is not fossiliferous. Sometimes (as just west of Sherringham) the sand and shingle (5) have worn down and denuded this clay, and then in its place we often find a reconstructed bed, consisting of a base