566 MESSES. JUKES-EE0WXE AND W. HILL ON" THE LOWEE PAET 



two exposures is remarkable, although they are ten miles apart. 

 We may fairly assume that this red band and its associated strata 

 are continuous across the intervening space ; and though we saw no 

 traces of it further to the north, it is very likely to extend as far as 

 Methwold, and might be discovered by a careful search over the 

 fields west of that village. 



At Methwold itself (south-east of the church) there is a large 

 quarry nearly 40 feet deep and exposing the hard rocky chalk of the 

 Rhynclionella-Cuvieri zone, overlain on the western side by about 12 

 feet of stratified sand and gravel. At the north end there is less 



gravel, and the section is as follows : — 



feet. 



Soil, gravel and disturbed chalk 4 



Hard lumpy chalk with two thin bands of greyish 



marl at the base 8 



Hard, yellowish, nodular chalk with B hynch. Cuvieri 



and other fossils 25 



37 



At the base a hole cleared of talus showed very hard, nodular, 

 yellowish rock with fragments of Inoceramus mytiloides, which greatly 

 resembled the upper part of the Melbourn Eock of Cambridge and 

 Hertfordshire. 



From this exposure it is evident that the outcrop of the Melbourn 

 Pock runs not far to the westward of Metkwold, and must sweep 

 round into the valley which lies to the north of the village. Thence 

 it runs north-westward towards AYhittington, forming a well-marked 

 ridge which crosses the main road about a mile south-east of Whit- 

 tington ; a little beyond this point and by the roadside is a quarry 

 in hard, yellowish, nodular chalk like that seen at Methwold, and 

 containing most of the same fossils. 



To the north of Whittington is another quarry, which exposes the 

 base of the Melbourn Hock and its junction with the underlying 

 beds ; the section is therefore of much importance, inasmuch as it 

 is the first quarry in Norfolk exposing this horizon, and its distance 

 from the last exposure of the zone of Bel. plena is not less than 20 

 miles. The beds exposed here are : — 



feet. 



Gravelly soil and rubble 3 to 4 



Hard, whitish, rough and rocky chalk, weathering 



into nodular lumps (Melbourn Rock) 7 



Band of buff-coloured marl enclosing loose lumps or 



nodules of hard chalk 1^ 



Very hard, white, lumpy chalk, breaking with vertical 



joints (about 3 feet), passing down into hard 



blocky white chalk 15 



about 27 



The lowest beds have a greyish tinge, probably from moisture, but 

 would doubtless dry white ; these white blocky beds are comparable 

 to the upper part of the Lower Chalk seen at Swaffham Prior and 



