i84 PROCEEDINGS COTTESWOLD CLUB 19 13 



compacted into a limestone, contains irregularly-shaped little 

 bodies similar to those in its equivalent at Kemble, and has 

 for its matrix the ordinary Fullers '-Earth clay. 



The rock called " Stonesfield Slate " in the section (speci- 

 men ii.) reminds one of that constituting the bed between 

 60 and 70 feet down (specimen i) in the Kemble Boring. 

 It is, however, much more oolitic. 



A sample of the limestone from about 231 feet down has 

 been preserved, and is typical Great Oolite limestone. Un- 

 fortunately, it is not at all clear where the Great Oolite ends 

 and the Forest Marble begins. Even in open sections in the 

 neighbourhood, that is, quarries and cuttings, the question 

 as to where precisely the line of demarcation between these 

 two formations comes is not an easy one to settle : there are 

 certain beds that have been called " Kemble Beds " which 

 are " Passage Beds " between the two. Marker states that 

 in the 1890 bore-hole " the fine cream-coloured freestones of 

 the Great Oolite " were reached at a depth of 128-130 feet from 

 the surface. 



We hesitate to suggest the division-hne in the section 

 between the Forest Marble and Cornbrash,or between the latter 

 and the Kellaway's Rock. From a geological standpoint it is 

 very interesting to know that Kellaway's Rock and Oxford 

 Clay are really there. 



