LOWER CHALK—NORFOLK, 
211 
These are chiefly Inoceramus lotus, d’Orb, the common Chalk Marl 
species. Holaster subglobosus is also very abundant. The rough 
gritty feel of the rock is due to the quantity of comminuted shell, 
about 60 per cent, of its mass consisting of such fragments. 
Pf 
Li* 
Zone of Holaster subglobosus. 
Totternhoe Stone. — The outcrop of this bed has not yet been 
found in the extreme south of the county between the courses of 
the Little Ouse and the Wissey, but it is exposed in the large quarry 
at Stoke Ferry, the section of which is shown in Fig. 49, p. 208. 
The Totternhoe Stone is about 4 feet thick, and has the usual 
aspect of a tough grey sandydooking stone, coming away in large 
blocks. There is a layer of cream-coloured calcareo-phospliatic 
nodules at its base, some of them being greenish outside, but there 
is no marked plane of division below these as at Bur well. The 
grey shelly or gritty material of the stone is piped into the light- 
coloured chalk below for about 12 inches, thus forming a band of 
mottled chalk, which comes away with the overlying stone. Rhyn- 
ch on el to mantelliana is, as usual, a common fossil. Upward the 
stone passes rapidly into greyish-white bedded chalk. 
No exposure of Totternhoe Stone has yet been found near Were- 
ham or Marham, though it must run through the village of Mar- 
ham. It is, however, clearly seen in the chalk-pit at Uersingham, 
where the section is : — 
sd . . ft - 
fe-- Thin-bedded rather hard greyish-white chalk - - - - 16 
Hard, tough, and massive grey chalk, with a layer of green- 
coated nodules at bottom - -- -- -- 21- 
Hard creamy-white chalk ----- SC en for 8 
A similar succession is exposed in quarries at Snettisham and 
Heacham, and in the cliffs at Hunstanton (see Fig. 50). At 
Heacham and Hunstanton its thickness is onlv 2 feet, but it forms 
a conspicuous feature in the cliff-face. 
Exposures of the Higher Beds .—The only noteworthy ex¬ 
posure between Hockwold and Stoke Ferry is at Feltwell St. Mary, 
where in a dry pond by the roadside, a quarter of a mile north-east 
of the church, Mr. W. Hill and the writer found a small exposure 
of pink chalk, weathering yellow, like that of West Eow in Suffolk, 
and resting on a course of hard nodular rock, with soft whitish 
chalk below; the succession thus agreeing most remarkably with 
that ten miles away. 
The upper beds of the Lower Chalk are exposed in the quarry at 
Whittington, where the following succession was seen in 1886 : — 
ft. 
Lower 
Chalk. 
Melbourn Rock - ------ 
(Buff-coloured marl, enclosing lumps of hard whitish 
chalk ---------- 
'i Very hard white lumpy chalk - - - about 
' Hard blocky white chalk, becoming greyish-white below 
7 
1 * 
3 
12 
4219, 
V 
