INFERIOR OOLITE : BANBURY AND CHIPPING NORTON. 15.9 
hazardous to speak with certainty of the correlation of such beds 
of sand, detailed mapping on the 6 -inch scale being needful to 
determine theiv stratigraphical relations. Similar sands occur at a 
higher horizon, as noted in a section west of Hook Norton Lodge 
(p. 156). 
Brown and white sands?, probably equivalent to those seen in the 
Epwell section, have been dug near Tadmarton Camp, and these 
beds have been again exposed beneath the Great Oolite Series 
on Constitution Hill, near Withycombe Farm, Banbury. 
Mr. Walford says " all that remains of the Inferior Oolite is from 
12 to 20 feet of white and fawn-coloured sands with occasional 
bands of stone." From these he obtained plant-remains, and 
some fossils, including Avicula braamburiensis, Corbicella 
bathonica, Gresdya abducta, Ostrea gregaria, Pecten articulatus, 
Trigonia angulata, T. v.-costata, an Alga, &c.* These beds 
probably belong to the lower division grouped with the North- 
ampton Beds. 
It has been noted that to the south of Chipping Norton there 
is a variable set of sandy and oolitic limestones, underlaid by more 
decidedly sandy rock, with hard concretionary nodules ; but these 
lower sandy beds are overlapped in the direction of Fawler. 
To the north-east of Chipping Norton, in pits near the Priory 
Farm, Heythrop Common, north of Showell Farm, near Pomfret 
Castle, and thence to Great Tew, and in the west of Swerford, we 
find evidence of the same general sequence. 
On top we find in places the irregular capping of clays and 
rubbly stone, belonging to the Great Oolite Series. At Ssverford 
these beds resemble those seen above the Inferior Oolite Series 
at Newboitle Spinney : the section is as follows : 
FT. IN. 
C7. Brown clay - - - - \ SO 
Great | 6. Grey and blue-black clay - - j" 
Oolite -^ 5. Bluish grey rubbly sandy and shelly 
limestone and clay, with Ostrea 
acuminata - - . . 20 
4. Calcareous sandy and shelly stone _ 10 
3. Clay seam ... 
2. Flaggy sandy, shelly, and (in places) 
Series. 
Inferior 
Oolite 
Series. 
slightly oolitic limestone 
Yellow sands with small concretionary 
nodules of calcareous sandstone ; 
piped where at the surface, and 
passing into harder stone 
>about 10 
The rubbly bed 5, appears to be in part decomposed or re- 
constructed portions of the bed below. It is termed the " Eift 
Bed " by Mr. Walford, for it sometimes fills rifts or crevices in the 
underlying strata. A fuller account of this section, differing 
somewhat in detail, is given by him.f Here there is evidently a 
break between the Great Oolite Series and underlying strata, for 
* Quart. Journ. Geol. Soc., vol. xxxix. p. 228 ; see also Beesley, Proc. Geol. 
A.SSOC., vol. v. p. 174. 
. f Quart. Journ. Geol. Soc., vol. zzziz. pp. 230, 232, 234. 
