VOL. XIX. (i) DEEP BORING AT SHIPTON MOYNE 53 
to the foreman the unmistakable yellowish Great Oolite lime- 
stones commenced at 78 feet 8 inches down. 
In the country in which are situated Great Sherston, 
fetbury, Kemble, and Cirencester, the Forest Marble beds 
have a wide extent. 
In the railway-cutting on the South-Wales Direct Line to 
the south of the village of Norton, some three and a half miles 
in a south-south-easterly direction from the Shipton Moyne 
bore-hole, Messrs. Reynolds and Vaughan found the Forest 
Marble beds to be from 80 to 87 feet thick, and to consist of ; — ' 
CORNBRASH. 
8 . 
Pores t 
Marble 
Depth at which the 
corresponding beds 
Thickness occur at Shipton 
in feet 
Moyne 
Shale . . 
20 
0 — 12' 7" 
'Hard, compact, sandy limestone, 
with doggers, alternating with ir- 
regular bands of loose sand, the 
sand predominating in the middle 
w of the series 
15 
12' 7" — 27 
27' to 
Shelly limestone 
5 
Compact, oolitic, shelly limestone, 
very variable 
I to 6 
34' 6" 
Shale . . 
25 
Hard, very shelly band (typical 
34' 6" to 
Forest Marble) 
3 
57' 
57'— 66' 
Shale 
10 
Limestone, sometimes sandy, some- 
times oolitic 
I to 3 
66'— 67' 6' 
From what these authors saw of the Forest Marble beds 
in the cuttings between a few yards of the eastern end of the 
Badminton Tunnel and Bradfield Farm to the south-east of 
the village of Norton, they were enabled to state : — 
“ The Forest Marble maintains throughout its typical character, as beds of 
variable shale, alternating with compact, shelly, oolitic limestone, or 
hard sandy limestone with doggers. It shows great lateral variability, 
the limestone-bands being all lenticular deposits, not traceable for any 
great distance.” 
The Shipton Moyne bore-hole is situated three-tenths of 
a mile away from the outcrop of the Cornbrash. As 67 feet 
6 inches of Forest Marble beds were proved, and as it is un- 
likely that more than 12 to 20 feet of beds occur between the 
highest deposit seen there and the base of the Cornbrash, it 
would appear that the Forest Marble beds are of about the 
same thickness as they are in the railway-cutting to the south 
of Norton. 
I Quart. Jouni. Geol. Soc. vol. viii. ( 1902 ) pp. 747*749 
