224 



MESSES. W. HILL AND A. J. JUKES-BEOWIfE ON 



ft. 



Soil 1 



Broken rubbly chalk with Inoceramus mytiloides 



and Ehyncho7iella Cuvieri 5 



,, 1, ( Very hard yellowish chalk containing a few 



Melbourn j whitish nodules 6 



°^ ' [ Hard, creamy white, rocky, nodular chalk 3 



f Buff-coloured shaly marl 1 



Zone of J Hard white chalk with smooth fracture 1 



Bel. plena. 1 Grey marly chalk, passing into 1 



[^Whiter rather tough chalk 3 



Our last section is at Chalkshire, a hamlet nearly two miles W. of 

 Wendover. Here the following beds are seen : — 



Pig. 3. — Diagram showing the order of succession of the Beds of the 

 Melhourn BocJc and the Zone o/Belemnitella plena at ChaJJcshire. 

 (Scale y\5 in. to 1 ft.) 



Zone oi Mhynchonella Cuvieri... 



Melbourn Eock 



Zone oi Belenuiitella plena 



Lower chalk-zone of Holaster 

 subglohosus 





Eubbly chalk and top soil. 



Hard yellowish rocky chalk, 

 with nodules ; marly partings. 



Hard whitish rocky nodular 

 chalk. 



Hard smooth white rock, en- 

 closed in marly beds. 



\ Marbled marl ; at this exposure 

 -' exceptionally hard and rocky. 



) White chalk, rather hard. 



I Grey-coloured chalk. 



Gritty bed, with green-coated 



odules. 



> Grey-coloured lower chalk. 



