VOL. XX. (3) THE SILURIAN ROCKS OF MAY HILL 
203 
very evident gap in the ridge. This gap owes its origin to the 
Rock Farm Fault, which has displaced the beds on the southern 
side of it slightly to the west. 
The quarries near the Rock Farm, which are constantly 
mentioned in older writings as being such a famous locality for 
fossils, are now largely overgrown, but the beds can be seen to 
dip here at 45 0 south-south- west. 
To the south of the high road is another old quarry, and the 
ridge known as Hobbs has been quarried extensively as far as 
the road leading from Longhope to Gloucester The dips vary 
from 37 0 to 44 0 , and are steadily in a west-south-west direction. 
Farther to the south the limestone forms Blaisdon Edge, 
along the crest of which are constant exposures till one gets to 
an old quarry to the west of Blaisdon, where the dip is 50° 
west, and close by is another, now being worked, just above 
the road to Blaisdon Hall ; and still a third by the side of 
the Blaisdon road, where the dip is west-south-west, and then 
comes the gap through which the Longhope brook runs. 
In the railway cutting close by and just above it are good 
exposures of the limestone, and the Trias is seen dipping 50° 
south-east in the railway cutting close to the Wenlock Lime- 
stone, though the actual fault line between the two is now 
overgrown. Here the dip has come to be south-south-west, so 
that the strike of the Silurian beds is somewhat sharply bent 
round near the great marginal fault. 
Still farther to the south there is another stretch of Wenlock 
Limestone, which runs through the Flaxley Deer Park. Here 
it is the Ludlow beds which form the actual summit of the 
ridge, and the Wenlock Limestone runs at a slightly lower level 
to the east of them. The interesting point about this line of 
exposures is that though at its northern end the limestone dips 
first north-west and then north-north-west, at its southern end 
the dip is to the north-east. Hence when one approaches the 
marginal fault in the Flaxley region the beds are so much 
affected that they have been turned over, and the Ludlow beds 
are dipping beneath the Wenlock Limestone. 1 ( Vide Section E, 
p. 208.) 
1 Vide Groom, Quart. Journ. Geol. Soc. vol. lvi. (1900), p. 180. 
