VOL. XVII. (2) INFERIOR OOLITE^CHIPPING NORTON 221 



DiTCHLEY-RoAD QuARRY, Charlbury. — Tliis quarry (36) 

 has been considerably worked since Mr Walford published his 

 brief description of it (pages 23 and 24 of his paper). > The 

 Upper and Lower Placunopsis-Beds {i.e., beds 5 and 19-20 

 respectively) can be made out, but at the time of my visit, 

 there was only a 4-inch bed of black and brown clay parting 

 them. An Ostrea-Cldiy occurs above the Upper Placunopsis- 

 Bed, and is succeeded by Hmestone, which is several feet in 

 thickness. According to Mr Walford " black clays with [an] 

 oyster bed at [their] base " and i ft. 5 J ins, thick come above 

 this hmestone and are succeeded by the Rhynchonella-Bed of 

 the Great Oolite. 



Hawk-Stone Quarry, Dean. — This quarry (37) displays 

 some most interesting beds, full of large gastropods. As far 

 as can be seen they constitute a local modification of the top- 

 portion of the Chipping-Norton Limestone. 



hawk-stone quarry, dean 



Thickness in feet ins 



Nejeran i & ) Clay, dirty greenish and brown at the base, with 

 Beds I 20 / inclusions of " sooty " clay : Placunopsis socialis . . 



Upper Gastropod Limestone. Limestone very hard, 



white ; large gastropods (? Psendomelanim) : about I o 

 Limestone, hard, white, with numerous small specks 



of calcite which weather in relief : 6 ins. to I ft. . . o 9 



Marl, bhnsh-grey : 4 to 8 ins. . . . . • . 08 



Lime- ^ ^ Limestone, white 08 



stone g Lower Gastropod Limestone. Limestone, hard, 



brownish ; large gastropods . . . . • • 17 



1 Limestone, fairly massive : seen . . . . . . 80 



Chipping 

 Norton 



East-End Quarry, Chadlington. — The following is the 

 succession in this quarry (38) : 



east-end quarry, chadlington 



Thickness in feet ins. 



f Limestones 



+j u 2. Clay, dirty-yellow and greenish-grey ; Ostrea (com- 



SS - mon), [Rhyn. concinna not found in situ\ 



00 Cf.S.S. Limestone, hard, greyish brown, fissile in places; 



\ nether surface very level : about . . . . • - 48 



{Beds 3 to 18, inch, absent). 



