VOL. XVII. (2) INFERIOR OOLITE— CHIPPING NORTON 227 



The numbers in square brackets refer to Mr Walford's 

 record (pp. 15-17). Beds 2 to 6 = beds 14 and 15 of Beesley's 

 record ; bed 7, his bed 16 ; and beds 8 and 9, Beesley's bed 

 17, but the measurements and descriptions vary considerably. 

 Beesley thought that the red sand [9] passed horizontally into 

 the Viviparus-Mdirl [8] ; but I have little doubt that Mr 

 Walford's arrangement is right, as the beds then come into 

 line with similar deposits elsewhere. Hudleston's record agrees 

 generally with Mr Walford's ; but he would regard bed [2] 

 as more closely related to the overlying Great Oolite than to 

 what Mr Walford calls the Neseran Beds. Mr Walford regards 

 the Viviparus [Paludina] -Marl here as equivalent to the Vivi- 

 parus-M.a.r\ of Sharp's Hill, and therefore assigns beds [2] to 

 [7], inclusive, to a position between the Viviparus-M.a.rl and 

 Bituminous Clay at Sharp's Hill. 



The irregular thickness of the red sand at Langton Bridge 

 reminds one of the similar and yet more irregular deposit in 

 the quarry near Stow-on-the-Wold.' The Oxfordshire sections 

 might give the impression that the deposit was mainly derived 

 from the dissolution of the immediate subjacent sandy Chipping- 

 Norton Limestones ; but that near Stow shows that it was an 

 independent irregular accumulation, as it there rests directly 

 upon ordinary oolitic limestones. 



The quarry numbered 58 is in Chipping-Norton Limestone. 

 The upper beds are much shattered ; the lower are black-speckled 

 and somewhat iron-stained. Other quarries in this Limestone 

 are those numbered 59, 60, 61 and 62. 



Oakham Quarry. — In this quarry (63) the Chipping- 

 Norton Limestone is an oolitic, somewhat sandy limestone, 

 with occasional oysters and shell-fragments and pebbles. 

 Some very large blocks of stone can be obtained ; but the beds 

 are generally much fissured, and into these large openings clay 

 has been introduced from above. 



A greenish clay is the most noticeable bed in the quarry. 

 Below it are, here and there, masses of soft calcareous and 

 extremely shelly marl, crowded with specimens of Placunopsis 

 socialis M. & L. These deposits are best seen in a kind of 

 trough fault at the south-western corner of the quarry. Here, 



I Proc. Cotteswold Nat. F.C., vol. xvi., pt. i (1907), p. 25. 



