THE STEUCTUEE OF THE GULLY, DUEDHAM DOWNS. 67 
contour of course not being visible ; and on top is a grass - 
covered surface, wbich is part of tbe little depression pre- 
viously mentioned, so that the Oolite immediately behind 
the shaley series is lower than that on either side of it. 
The stratification of the beds in this little section is worthy 
of careful study, 
The cream-coloured shales, (1), are at the top for the most 
part horizontal, but rise at an angle to the right, and abut 
against the oolite, which is here massive and unaltered. 
They make an angle of about 30° with the surface of oolite 
on which they rest, and are exactly similar close to and far 
from the junction, there being no conglomerate, no zone of 
fragments, and no crush-rock, but well-developed shale resting 
against well-developed limestone. 
A little lower down, these same shales present a strong 
anticline. To the right, however, they turn up in a little 
syncline, and are here parallel to the oolite. Again they are 
unaltered at the junction. 
Next comes the vertical series of thick limestones scarcely 
altered, and colour-banded sandstones lying parallel to the 
stratification of the limestones. Although these vertical 
beds lie in the centre of an anticline like a door under an 
arched lintel^ yet there is no eroded surface, and no unconform- 
ability. The fact is, that the anticlinal banding is super- 
induced on the vertical, and blocks may readily be obtained 
showing cleavage and colour-banding vertically, and hori- 
zontal (or diagonal, according to position in the arch) 
cleavage also. 
Below the vertical series is another of dark shales and 
- sandstones arranged in an arch. But although this lies 
below the vertical series, it is nearer the exposed front face 
of the section, and has been more exposed than that series to 
the weather. In fact the vertical series has been the most 
sheltered part of all, and has only lately been displayed. 
