Thickness in feet.
6. Surface-soil, with bleached Reading pebbles…bout2
5. Pebbly clay and other glacial deposits, varying from2 to 20
4. Stratified loamy sand5 to 6
3. Stratified coarse gravel17
2. Dark clay, with black-coated unworn flints and small well-rounded pebbles6 inches
1. Chalk.