152 
PROCEEDINGS COTTESWOLD CLUB 
1919 
The cores from this bore-hole thus supplied useful additional 
information concerning the lower part of the Forest Marble 
and the upper part of the Great Oolite, as well as most interesting 
particulars respecting the thickness of the Fullers’ Earth, the 
Inferior Oolite, and the relationship of Inferior Oolite to the 
Upper-Lias Sands in this district. 
Forest Marble. — The first 25 feet 6 inches were percussion 
bored — 20 feet with a io^-inch. chisel, 5 feet 6 inches with a 
gj-inch one. Mr. Henry Marten, A.M.I.C.E., very kindly 
supplied me with particulars of the rocks passed through. 
They are given between quotation marks on page 158. 
In 
beds 4-19, 1 limestone — in places sandy — predominated, 
in 20-22, shales and clays, 
in 23-25, limestone, and 
in 26-32, shales and clay again. 
The deposits numbered 26-32 occupy the stratigraphical 
position of the Bradford Clay. In the neighbourhood of 
Bradford-on-Avon the lowest portion of the Bradford Clay is 
the most fossiliferous part, and is known as the “ Fossil Bed ; ” 2 
but there was no trace of such a fossiliferous deposit here 
at Shipton Moyne. 
Great Oolite. — As already remarked, no cores were drawn 
from No. 1 Bore from between 58 feet and 100 feet 6 inches 
down. 
The cores from No. 3 Bore showed a sharp line of demarca- 
tion between the shaly clay (beds 26-32) of the Forest Marble 
and the underlying Great Oolite limestone. The top portion 
of this underlying limestone was a hard, bluish-grey, oolitic 
limestone ; but the main mass was a greyish-coloured, softer 
oolite. It was 21 feet thick, and — according to Air. Marten’s 
notes (for no samples were preserved in the core) — had seams 
of clay between some of the constituent limestone bands. This 
21 feet of rock occupies the stratigraphical position of beds 4-16 
(inclusive) proved in the Tetbury Bore, 3 and of beds [1] and 
1 The numbers from 1 to 60 used to distinguish the beds referred to in this paper correspond 
with those employed in Proceedings, xix., pp. 49-55. 
2 H. B. Woodward, The Ju/assic Rocks of Britain, etc., vol. iv. (1894), p. 354. 
3 Procs xix., p. 58. Compare Upper Great Oolite, Groups F to D, of Reynolds & Vaughan, 
Q.J G.S., vol. lviii. (1902), pp. 744-45- 
