CARBONIFEROUS LIMESTONE SERIES. 
193 
Camp. There are two possibilities with regard to these oolitic 
bands: — (i) That they are two distinct bands, (2) that they are 
repetitions of the same band. According to the former 
hypothesis the lower band would be in horizon 7 or the lower 
part of C 1, and a considerable increase in the thickness of the 
C-beds as compared with their development further E. would 
be implied. According to the second hypothesis the outcrop 
of the C-beds is widened either by a strike fault or by a roll in 
the strata, either of which might be hidden under the tongue of 
Trias alluded to above, which strikes north-eastwards from 
Tickenham to a point S. of Nash House. The latter hypothesis 
is the more probable, though definite fossil evidence is lacking. 
A fault passes through Cadbury Camp, and the Canini a-oolite 
is next seen on the slope to the S. of the camp. From this 
point westward it is not again met with till the western limit 
of the area under consideration is reached at Court Hill, 
Clevedon. Here, however, the Caninia-oolite is exposed at 
Court Farm. 
(4) Horizon A 1 (Bellerophon Bed). 
Horizon A, that of overlap between the C and S-beds, is so 
well marked as to merit a special description. Passing west- 
ward from the Avon Section, it is first seen in a new quarry just 
inside Leigh Woods and opposite the end of Beggar's Bush Lane. 
Here it is a massive partly dolomitised grey oolite weathering 
reddish and containing rounded pebbles of oolite, apparently due 
to pene-contemporaneous erosion. A fish-tooth (Psephodus) was 
the only fossil found at this spot. A band of white oolite runs 
parallel to Beggar's Bush Lane, and is exposed at many points 
along the northern margin of Ash ton Park. This band is on the 
strike of the oolite at Beggar's Bush Corner, and is doubtless 
the same band, though not quite identical lithologically. When 
the western limit of Ashton Park is reached the rock again has 
the character of a fairly coarse oolite tending to weather reddish. 
The long narrow wood, after which Longwood House is named, 
stands on this oolite, and it is fairly well exposed and crowded 
with gastropods at the eastern end of the wood. Further W. 
it is seen in the Bellerophon-quarries described by Vaughan, 2 
the eastern being on the border of Wraxall Piece and W. of the 
road to Failand Farm, the western to the S. of Failand Inn. The 
next point where the band is seen is miles to the W., by the 
side of the footpath leading from Sidelands Cottages to Parsonage 
Farm, Wraxall. The same band, shifted by a fault, is seen in 
an old quarry by the field path which runs parallel to Wraxall 
Hill and about 300 yards to the E. of it. Two-thirds of a mile 
further W. the band, retaining its character as a reddish oolite 
1 Vaughan 's original use of the term horizon is followed, not his 
later use (Q.J.G.S., Vol. LXXL, 1915, pp. 17-24. 
2 Bristol Paper, pp. 212-213. 
