A. J. Jukes-Browne — Med Chalk in Suffolk. 



27 



we obtained but little evidence. E'orth of Mildenball tbere is either 

 a cross fault or a decided sinking of the beds in the direction of the 

 strike, so that near Lakenheath the whole of the Lower Chalk lies 

 below the surface of the Fens. The valley of the Little Ouse or 

 Brandon River appears, however, to coincide with a line of fault, for 

 the Lower Chalk comes to the surface again on the north side of the 

 valley by Hockwold and Feltwell in Norfolk, and rises to a height of 

 at least 60 feet above the level of the fen. 



Fig. 1. SuFroLK. Fig. 2. Lincolnshire. 



Grey shale and wMte 

 chalk. 



Blocky greyish-white 

 chalk. 



Eough nodular yellow- 1 



ish-grey chalk. \ 



Eed band of West Eow. 



Hard grey chalk -with 

 some softer bands. 



Tottemhoe Stone. 



Chalk Marl (upper por- 

 tion). 



I ) ) 







J 11 ll l 

 M_L>J_< 



II I I I I I r 





T7TT- 



111 _'ii 



iVAJMiii 



'>:> 



—51 (it I led marl. 

 WlutB chalk. 



Pink chalk. 



TTard whitish chalk. 

 Hard grey nodular chalk. 

 Red chalk. 



Hard grey chalk, with 

 bands of softer chalk 

 below. 



Hard grey chalk. 



Hard grey gritty chalk. 



Hard red rock with red 

 marl at the base. 



Scale — 32 feet to one inch. 



At Feltwell we were fortunate enough to find a small exposure of 

 reddish chalk in the bank of a dry pond by the roadside, a quarter of a 

 mile ]S".E. of St. Mary's Church ; as it overlies a band of very hard 

 nodular rock, below which a softer greyish white chalk is visible, there 

 can be little doubt that it is the same band of red chalk, and that the 

 section here is similar to that at West Row. 



Beyond this we did not meet with any indications of red chalk, but 

 it is quite possible for the band to extend some distance farther north 

 without being seen, for large areas are covered with glacial and post- 

 glacial deposits, and the pits near Stoke-Ferry are all either above or 

 below the horizon on which I have placed this particular band. 



At the same time it should be mentioned that the red bands in the 

 Lincolnshire chalk only extend over an area of 12 or 15 miles in length, 

 and are not found at the southern extremity of the Wolds. Whether 

 they are really absent over the intervening space, or whether the beds 

 themselves continue, but gradually lose their distinctive colour, and so 

 become indistinguishable from the rest of the grey chalk, is a difficult 

 point to decide, and one upon which I do not at present offer an opinion. 



