342 ME. W. HILL ON THE LOWER BEDS OP THE UPPER 



at Leavening. A small spring, which may be taken as indicating the 

 outcrop of the underlying clay, is about 30 feet below this bed, a 

 measurement which corresponds fairly with its position with regard 

 to the Ked Chalk at Leavening ; but I believe this exposure to be in 

 a large slip, and much reliance cannot be placed upon it. 



The coloured band was proved by digging to be 4 feet thick, and 

 its position is singular if the beds are in place. At the exposure 

 about J mile south-west of Wharram Grange and at the west end of 

 Earthquake plantation, the dirty yeUow-coloui-ed chalk, representing 

 the Hunstanton Limestone, seems to be overlain by very rough and 

 gritty chalk like that exposed above the Red Chalk at Leavening. 

 Holaster suhglobosus and Discoidea cylindrica occurred in this ma- 

 terial ; but from the broken condition of the chalk nothing certain 

 was made out. 



On Scragglethorpe Brow are two or three exposures of the basal 

 part of the Lower Chalk. In a pit on Mr. Eichardson's farm where 

 the Hunstanton Limestone is exposed, no very clear evidence of the 

 sequence of the beds above it can be obtained, the chalk being much 

 broken. Yery rough nodular chalk, the nodules separated by 

 greenish-grey marl, seemed to be overlain by smoother and whiter 

 material. There was no indication of a second red band above the 

 Hunstanton Limestone. 



At the base of the hill in the corner of the Knapton Wood is an 

 old pit ; talus and rubbish hide much of the face ; the chalk shown 

 near the top is hard, whitish, and rough. There was no indication 

 of the Hunstanton Limestone at its base, which appears to rest on 

 clay ; but at the top of the pit and on the talus slope I found frag- 

 ments of pink chalk which I do not think belonged to the basement- 

 bed. I saw no sign of the " Grrey Bed," although at least 30 feet 

 of chalk must have been exposed. 



At the Glebe Parm, east-south-east of West Heslerton, a pit shows 

 hard, greyish, nodular chalk. Ostrea vesicidaris and Terehratula semi- 

 glohosa were common in a marked marly band, se|)arating one of the 

 lower courses of the chalk ; the upper part was rubbly and broken 

 up. No exposure of the Lower Chalk occurs between this last and 

 Ganton. 



In the fine coombe which extends back into the hills west of 

 Ganton Hall the Grey Chalk can be fairly seen. I made out the 

 following section:' — 



ft. 



Chalk with flints — 



Hard, rough, creamy-yellow chalk with Lioceramus mytiloides 



about 8-10 

 Thin-bedded, platy chalk, much covered by debris, seen only 



at intervals to the base of the above about 38 



Pinkish-red chalk, rather soft and marly 4 



Rough chalk witli marly bands, weathering into thin laminae... 6-8 

 Hard lumpy chalk, darker grey in colour than the above ; this 



and the preceding appeared to have shpped, and the section 



was somewhat obscure 2 



Rough greyish-white chalk, weathering into platy pieces, no 



trustworthy guide to its thickness -f-20 



