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



229 



No. 66. 



CHASTLETON-HILL QUARRY 



Thickness in feet 



( 12. 



•■'13 



14- 



19 



I. 

 C.N.L. 



Ostrea- and Rhynchonella-Bed. Greenish-grey clayey 

 marl with Ostrea, Terebratiila, Rhynchonella concinna 

 auctt. very common. Trapezium, Pholadomya, Neri- 

 ncea, etc. : about 



(Beds 3 to II, incl., absent). 

 Limestone, pale-yellow, rubbly, oolitic ; Ostrea, Tra- 

 pezium, etc., and Nerita pseudocostata d'Orb., at the 

 base 

 Clay, dark greenish-grey ; Ostrea 

 Limestone, hard, brownish, in two layers. Rather a 

 waterworn top . . 



[Beds 15 to 18, incl., absent). 

 ' a. Marl, pale-yellow : about . . 



b. Clay, tough 



c. Sand, brownish, with limy inclusions at the top. 

 In the other working, in the north-westerly face, the 

 clay-beds (6 and d) are seen enclosing a mass of marl 

 (with P. socialis) and conjointly measuring i ft. 6 ins 

 across (vertical). The sand is 6 ins. thick in places 

 and is occasionally replaced by chunks of hard 

 brown limestone : 2 to 1 8 ins. 



l d. Clay, tough, dark : o to 2 ins. 

 Limestones ; top-bed (? = Plant-Bed) very hard and 

 gritty : seen . . 



Freebench Quarry. — In this quarry (67) about 15 feet 

 of black-speckled Chipping-Norton Limestone is exposed, and 

 while some of the beds are close-grained and non-oolitic, others 

 are decidedly oolitic. 



Pointed-Heath Quarry. — The beds above the Chipping- 

 Norton Limestone in this quarry (68) are very much disturbed. 



No. 68. 



pointed-heath quarry 



Thickness in feet ins. 



C.N.L. 



Lower 'Nerinma-'Q&A. Limestone, pale pinkish- 

 brown, shelly, rather fissile and ofttimes sandy ; 

 Nerincea spp. common Gervillia ornata Lye. non 

 Moore : seen about . . 



Marl, pale-green ; Nerinaece not uncommon, Ostrea 

 acuminata Sow., Perna mytiloides . . 



Clay, very tough, dark-brown. . 



Limestone very hard, gritty, pinkish-brown and blu- 

 ish, shelly. On top of it, and separated therefrom 

 by a thin layer of clay, is a band of limestone, large- 

 ly composed of specimens of P. socialis (i inch) . . 



Sand, yellow 



Clay, tough, dark-brown 



Marl, greenish-grey mixed with white rubble 



Limestones, with black-specks and more definite plant- 

 remains : seen 



