52 
PROCEEDINGS COTTESWOLD CLUB 
1915 
w 
- i 
75 
U 
'i'iuckness 
of rocks 
I'l. Ins. 
56/;. Marl, slialy, greenish-grey, velatively barren ; 
two sandy, i-inch layers near the top, and 
Ostrea acuminata Sow. common in the 
lowest 4 inches . . . . . . . • 3 
57. Hard, blue, shelly limestone (similar to 59^), 
with irregular intervening layers of shaly 
marl; Ostrea acuminata Sow. 'common . . i 6 
38. Marl, shaly, dark in the upper portion, 
greenish-grey in the lower. More sandy 
and indurated at the top : relatively 
barren . . . . . . . . . . 100 
39rf. Marl, dark at some horizons, greenish-grey 
and more marly at others, with occasional 
thin blue .shelly limestones in the upper 
part and full of specimens of a small form 
of Ostrea acuminata Sow. ; Chlamys 
Vagans (J. de C. Sow.) (spec, from 248 ft. 
3 ins. down) . . . . . . . . 3 5 
h. Hard, blue, shelly limestone . . . . . . 10 
c. Greenish-grey imlurated marl full of shells o 7 
d. Grey, shaly marl , relatively barren, only an oc- 
casional Ostrea acuminata Sow., Rhynch- 
onella of R .-concinna-gvowp . . . . i i 
e. Limestone, similar to . . . . . . 05 
/. Greenish-grey marl and clay, dark shaly marl, 
and greenish-grey indurated marl full of 
shell-fragments : Ostrea acuminata Sow. 
common in the soft portions . . . . 17 
60. Dark shaly marl, relatively barren, with an oc- 
casional fine-grained, grey, sandy layer 7 10 
Limestone, grey, with numerous small 
crinoid-ossicies . . . . . . . . 01 
Fullers’ E.\rth — G reyish marl, weather- 
ing into small shaly pieces of very uni- 
form texture, de\'oid of hard layers and 
unfossiliferous ; penetrated . . . . 21 6 
I leplli 
l-'t. Jus 
236 b 
238 o 
248 o 
251 5 
252 5 
253 o 
254 I 
254 
2 5f) I 
264 1 I 
263 o 
2S6 (> 
Forest Marble. — From the above record it will be ob- 
served that 67 feet 6 inches of rocks were penetrated before 
what is called the “ Great Oolite ” was reached. No cores 
were drawn from between 58 feet and 100 feet 6 inches down, 
and the information given is that which was supplied to me 
by the foreman. It may be that these beds correspond to 
those lettered D, E, and F by Prof. vS. H. Reynolds and Dr. A. 
Vaughan in their account of the rocks displayed to the east 
of the tunnel at Acton Turville," and designated by them the 
“ Upper Great Oolite.” For this reason I have associated 
them with the Great Oolite in the present paper. According 
I Quart, lourn. Gcol. Soc., vol. Iviii. (1902), p. 746. 
