222 PROCEEDINGS COTTESWOLD CLUB 191 1 



EAST-END QUARRY, CHADLlNGTO'S-coHtinHed. 



Thickness in feet ins. 

 f 19. Yellow sand with some " films " of greenish clay : 

 rttn oto.. .. .. .. .. .. .. 03 



j5 <L> i f Reddish-brown sand : o to 2 ins. . . . . . . 01 



^ f"' Black sooty clay : o to 2 ins. . . . . . . 01 



V 20. -| Lower Placunopsis-Bed. Reddish-brown or choco- 

 late-coloured marly clay, with occasional seams of 

 '^ sand ; P. socialis very abundant : o to 6 ins. . . 03 



(These Neceran Beds rest upon a very uneven surface of 

 the underlying limestones, and in places are absent, 

 the bed marked " Cf. S.S. [Compare Stonesfield 

 Slate'] " then resting directly upon the Chipping- 

 Norton Limestone). 



1. Upper Gastropod Limestone. Limestone, creamy- 

 white and brown, full of large gastropods as at the 

 Hawk-Stone Quarry. Very irregularly-deve- 

 loped : about . . . . . . . . . . 10 



{Beds b, c, d and e of the Hawk-Stone Quarry absent). 



Limestones, very much disturbed . . . . . . 80 





The Upper Gastropod Limestone may be on the horizon 

 of the Plant-Bed. 



The two quarries (39) and (40) near Barter's-Hill Farm 

 are in the Chipping-Norton Limestone. 



Barter's-Hill-Camp Quarry. — Here (41) about 15 feet 

 of hmestone is exposed. At the base are massive hmestones, 

 then comes the " Knotty-Bed " ( = " Old Man "), and this is 

 followed by less-massive limestones that have a shelly-bed 

 at 2 feet above the top of the Knotty-Bed. 



Lyneham-Barrow Quarry. — Beds similar to those seen 

 in the last quarry are exposed here (42). The limestones 

 below the Knotty-Bed are very massive, and have a tendency 

 to fissure vertically. Those above comprise false-bedded and 

 flaggy limestones, which may be on the horizon of the Gastropod 

 Limestones and associated deposits of the Hawk-Stone and 

 East-End Quarries, with a rather white limestone on top. 

 Upon this stratum rests all that represents the Neaeran Beds — 

 a layer of clay (bed 19) overlaying reddish-brown sand (bed 20), 

 which together measure 4 inches in thickness. Above these 

 deposits come 5 feet of Great-Oolite limestones, which contain 

 not infrequently fish-teeth, such as Mesodon, which are not un- 

 common in the true Stonesfield Slate at Stonesfield. 



