| London Clay, 236 feet;— | Feet. | In. |
| Yellow Clay | 30 | 6 |
| Blue Clay, with septaria | 205 | 6 |
| Reading Beds, 611⁄2 feet:— | | |
| Red, Yellow, and Blue Mottled Clay | 37 | 6 |
| White Sand, with flint pebbles | 0 | 6 |
| Black Sand, passing into the bed below | 2 | 0 |
| Mottled Green and Red Clay | 1 | 0 |
| Clayey Sand | 3 | 0 |
| Dark Grey Sand, with layers of clay | 9 | 6 |
| Ash-coloured Quicksand | 6 | 6 |
| Flint Pebbles | 1 | 6 |
| Thanet Sand, 27 feet;— | | |
| Ash-coloured Sand | 10 | 0 |
| Clayey Sand | 4 | 0 |
| Dark Grey Clayey Sand | 11 | 0 |
| Angular Green-coated Flints | 2 | 0 |
| Chalk, with Flints (? Upper Chalk), 2441⁄2 feet;— | | |
| Chalk, with flints | 119 | 6 |
| Hard Chalk, without flints | 8 | 0 |
| Chalk, softer, with a few flints | 31 | 6 |
| Nodular Chalk, with three beds of tabular flints | 13 | 6 |
| Chalk, with layers of flint | 32 | 6 |
| Chalk, with a few flints and patches of sand | 9 | 6 |
| Very Light-grey Chalk, with a few flints | 30 | 0 |
| Chalk, without Flints (Lower Chalk), 341 feet;— | | |
| Light Grey Chalk, and a few thin beds of marl | 133 | 0 |
Grey Chalk Marl, with compact and marly beds
and occasional pyrites |
161 |
0 |
| Grey Marl | 20 | 0 |
Harder Grey Marl, rather sandy and with
occasional pyrites |
27 |
0 |
| Chalk Marl, 591⁄4 feet;— | | |
| Hard Rocky Marl (? Tottenhoe Stone) | 0 | 6 |
| Bluish Grey Marl, rather sandy, lower part more clayey | 58 | 9 |
| Upper Greensand;— | | |
| Dark Green Sand, mixed with grey clay | 13 | 9 |
| Gault, 1301⁄2 feet;— |
| Bluish Grey Micaceous Clay, slightly sandy | 39 | 0 |
| The same, with two layers of clayey greensand | 6 | 7 |
Micaceous Blue Clay; at base a layer full of
phosphatic nodules |
84 |
11 |
| Lower Greensand (?), 1881⁄2 feet;— | | |
| Red and Yellow Clayey Sand and Sandstone | 1 | 0 |
| Compact Red Clay, with patches of variegated sandstone | 4 | 0 |
| Dark Red Clay | 4 | 7 |
| Red Clay, Whitish Sand, and Mottled Sandstone | 3 | 0 |
Hard Red Conglomerate, with pebbles from the
size of a marble to that of a cannon-ball |
2 |
0 |
| Micaceous Red Clay, mottled in places | 26 | 0 |
| Layers of White Sandstone and Red Sand | 3 | 8 |
| Mottled Sandstone | 0 | 4 |
| Red Sand and Sandstone, with pebbles (a spring) | 2 | 0 |
| Layers of Red Sandstone and White Sand | 4 | 0 |
| Pebbly Red Sand and Sandstone | 1 | 0 |
| White and Red Sandstone | 5 | 0 |
| Fine Light Red Sand | 2 | 9 |
| Hard Sandstone | 0 | 3 |
| Very Fine Light Red Sand | 4 | 0 |
| Red Clay | 2 | 0 |
| Clayey Sand | 1 | 3 |
| Red Sandy Micaceous Clay, with sandstone | 2 | 5 |
| Compact Hard Greenish Sandstone | 10 | 0 |
| Very Micaceous Red Clay | 1 | 0 |
| Grey and Red Clayey Sand | 1 | 1 |
| Light-coloured Soft Sandstone | 2 | 1 |
| Red Sand and Sandstone | 6 | 2 |
| Greenish Sandstone | 4 | 0 |
| White and Grey Clayey Sand, with iron pyrites | 2 | 0 |
| Reddish Clayey Sand, with layers of sandstone | 3 | 8 |
| Micaceous Red Clay | 18 | 4 |
| Greenish Sandstone | 0 | 5 |
| Red Mottled Micaceous Clay, with patches of sand | 34 | 6 |
| Red Quartzose Micaceous Sandstone | 2 | 0 |
| Brownish-red Clayey Sand and Sandstone | 4 | 0 |
Very Hard Micaceous Sandstone, with pebbles of
white quartz |
4 |
0 |
| Light Red Clayey Sand | 10 | 0 |
| Red Micaceous Quartzose Sandstone | 8 | 0 |
| Light Red Clayey Sand, small fragments of chalk | 2 | 0 |
| Whitish and Greenish Hard Micaceous Sandstone | 6 | 0 |
| Total | 1302 | 0 |
