| The contact between Cretaceous Chalk and Palaeogene siliciclastic sediments is a megasequence boundary within the fill of the Wessex Basin. |
| Chalk was important to yard operations for without it switching freight cars in marshalling yards would have been slower and much more difficult. |
| Chalk Richard Lewis up as another statistic on the list of people who have ruined their lives through illegal drug use. |
| Chalk downland has several butterflies found nowhere else, and the chalkhill blue is one of these. |
| Similar stratal geometries have been described from comparable levels in the Chalk of the North Sea, and in outcrop in Britain and France. |
| The Grey Chalk contains common intercalations of thin, marly layers, with omnipresent bioturbation. |
