+------
| Irregular made ground
|
5 | Clayey
|
| Alluvium
5 +------
|
4 | Peat
|
9 +------
|
|
|
|
|
10-12 | Sand and Gravel
|
|
|
|
|
21 +------
2 |
+------ Gravel
2 |
25 +------
|
4'6" | Running Sand
|
29' 6" +------ Gault
|
_Scale_ 8' to 1"
[Illustration: Fig. 2. Section seen in digging foundations of Tennis
Courts on Midsummer Common, Cambridge.]
Lower down the river near Ely a most important and interesting section
has recently been exposed. A new bridge was built over the Ouse near
the railway station and to obtain material for easing the gradient up
to the bridge a pit was sunk close to it on the east side of the river,
and was carried down to the Kimmeridge Clay thus giving a clear section
through the whole of the alluvium (Fig. 4, p. 11).