Great Oolite Forest Marble 
50 
PROCEEDINGS COTTESWOLD CLUB 
1915 
The field in which the bore-hole is situated has for its sub- 
soil heavy clay. 
DESCRIPTION OF THE ROCKS PASSED THROUGH BY THE 
BORE-HOLE AT SHIPTON MOYNE. 
Top of Well — 315 ft. above ordnance-datum. 
Well. — 47 ft. 2 ins. deep. 
Percussion Boring — 53 ft. 4 ins., and 
Rotary Boring — 186 ft. : total depth — 286 ft. 6 ins. 
f I. Surface soil and sub-soil (heavy clay) 
2. Greyish marly clay, with thin layers of very 
fine-grained .sandy limestone covered with 
1 “ tracks ” 
, 3. Greyish rocks with thin layers of greenish- 
' grey clay . . 
4 — 1 5. Limestones, some of typical (blue, shelly) 
Forest-Marble facies, frequently with 
“ clay galls,” others sandy, separated b}" 
layers of sandy marl and clay — the sandy 
matter predominating in the middle por- 
tion of the series 
16. Limestone, hard, bluish, shelly — typical 
Forest Marble — but without ” clay galls ” 
17. Sandy clay 
18. Limestone, similar to 16 
19. Limestones, sandy, in very thin layers with 
fragments of wood 
20. A variable series of deposits, including thin 
layers of greenish-grey marl and sandy 
matter alternating ; bluish-grey lime- 
stones (like typical Forest Marble) and 
some sandy 
21. Sandy clay 
22. Hard, greenish-grey marl with sandy layers 
23 — 24. Typical Forest Marble in two beds 
25. Typical Forest Marble with occasional seams 
of greenish-grey clay 
26 — 32. Grey shaly clay with occasional beds of 
sandy limestone, which arc frequently 
covered with ” tracks ” . . 
33. Light brown oolitic limestone with calcite in 
fissures 
. 34. “ Yellow marl or clay ” 
35. ‘‘ Gritty rock ” . . 
36. ‘‘ Buff marl and hard gritty rock ” . . 
37. “ Very light-grey rock ” 
38. ” Cream-coloured and bluish-grey oolitic 
' limestone, very hard to bore through ” 
39. ” Limestone ” 
40. ‘‘ Marl or clay ” 
41. Great Oolite Limestones. Yellowish oolitic 
limestones. (The foreman stated that 
the ‘‘ Bath Stone ” commenced at 78 ft. 
i 8 ins. down ; rotary boring at 100 ft. 
L 6 ins.) 
Thickness 
of rocks Depth 
Ft. Ins. Ft. Ins. 
I 
6 
I 
6 
3 
6 
.5 
0 
7 
7 
12 
7 
H 
5 
27 
n 
3 
6 
0 
8 
3 
4 
34 
6 
0 
6 
35 
0 
5 
3 
40 
3 
0 
6 
40 
9 
3 
9 
44 
6 
2 
6 
47 
0 
TO 
0 
57 
0 
10 
6 
^>7 
6 
3 
6 
I 
0 
2 
0 
I 
6 
0 
6 
1 
0 
I 
2 
0 
6 
78 
8 
73 6 152 2 
