XV111 GEOLOGICAL FEATURES 



always correspond. Nearer the Wansdyke this flint- drift 

 is covered by a lighter-coloured clay containing few flints. 

 In a pit about 14 feet deep, immediately to the north of 

 Ivy's Farm, there is a peak of chalk whose top is about 12 

 feet below the surface, and which is surrounded by a dark- 

 stained clay with flints, which is again covered by a mottled 

 red clay with few pieces of flint. 



Following the course of the railway towards the south- 

 east, in a slight depression of the surface the beds are 

 Flint-gravel (broken fragments) ...... 3 feet. 



Mottled red clay with few pieces of flint 4 

 Dark-stained clay with flints, and also 

 containing boulders of sandstone at 

 least 12 feet from the surface 10 



The top of a chalk peak with large flint-nodules occurs 

 in one corner at the bottom of the pit. 



Further towards the south-east the gravel disappears, 

 and the clay without flints becomes thicker ; so that at a 

 distance of 300 yards further, in a pit 12 feet deep, the 

 beds are 



Bed clay without flints 3 feet. 



A greyer clay, also without flints 9 



In a cutting half a mile further towards the south-east, 

 the same red clay with few broken pieces of flint and small 

 flint-pebbles is met with ; and about a mile further, a sandy 

 clay with few flints passing into a greenish-yellow sand. 



The drift-clay extends towards the south-east probably 

 as far as Savernake Forest : at present there are few sec- 

 tions, but it wilf soon be exposed by the railway-cuttings 

 through it. 



In a chalk-pit near Manton Coppice, on the brow of the 

 hill overlooking Clatford Bottom, under a covering of about 

 2 feet of clay there occurs a dome of chalk, whose top is 

 about 12 feet above the bottom of the pit. The dome, 

 which has been hollowed out for the purpose of lightening 



