294 
LOWER OOLITIC ROCKS OF ENGLAND : 
FT. IN. 
Stone Bfield Beds 
(12). 
with pot-lid structure, slightly oolitic 
in places, and with here and there 
lenticular masses of soft sand 2 to 3 
Irregular bed of grey sand - 3 
Yellow and white micaceous sandy 
shales, and fissile sandy beds - 3 
Shelly and oolitic limestone, with Ostrea 
acuminata ; passing down into fissile 
micaceous and calcareous sandstone 
with Gervillia, Ostrea acuminata, O. 
Sowerbyi, Placunopsis socialis, Pleu- 
romya, Trigonia impressa (= Slaty 
beds of Sevenhampton, &c.) - 3 
I ochreous layers near top. 
Again towards Aylworth, in the second cutting (H.) east of Notgrove 
Station, and in the eastern end of the first cutting (G.), there were sections 
showing the lower beds of Great Oolite and Stonesfield Beds, and at one 
point the whole of the Fuller's Earth (about 25 or 30 feet) down to the 
Inferior Oolite. Still further east other sections were to be seen, the most 
important being that south-east of Roundhill Farm (N.), where the whole 
of the Fuller's Earth was again shown. 
Stonesfield Slate has been extensively worked on Sevenhampton 
Common, north-west of Sevenhampton, principally to the east of 
Puckham Woods. The beds exposed in 1 887, were as follows : 
FT. IN. 
Rubble and soil - 
f Brown clay 
Rubbly oolitic marl, the surface of which 
is piped : Ostrea acuminata - 
Compact pinkish concretionary lime- 
rock (see p. 290) 
Fissile and false-bedded shelly oolite ; a 
variable series of stone-beds, more or 
less oolitic, much coated in places with 
carbonate of lime derived from the 
rubbly marl above. [Ragstone] about 
Upper 
Division. 
Lower 
Division. 
1 
1 3 
3 6 
1 
14 
The te Slates " were formerly worked below these beds, and 
are not now exposed, the workings having been given up about 
40 years ago on account of the thickness of overlying material 
the " slates " readily obtained having been exhausted. 
Some details of the old quarries were published by Murchison, 
J. Buckman, and Strickland. Their records agree generally with 
the above account, and further note the occurrence of the Stones- 
field Slate (4 feet thick) immediately beneath the Ragstone ; 
while at the bottom of all, yellow clay (Fuller's Earth) was 
proved.* Lima cardiiformis, fecten, and Ammonites were noted 
in the Ragstone by these authorities : the last-named form (rare 
indeed in this series) was however obtained by myself at Bisley. 
Plant-remains have also been recorded.f 
* Murchison, Geol. Cheltenham, ed. 2, 1845, p. 18 ; see also Lonsdale, Proc. 
Geol. Soc. vol. i. p. 413 ; and Hull, Explan. Hor. Sec. Sheet 59, p. 4. 
t See Brodie and Buckman, Quart. Journ. Geol. Soc., vol. i. p. 223 ; Hull, Geol. 
Cheltenham, p. 54 ; Phillips, Geol. Oxford, p. 168. 
