5.
Hill and south of Maldon, depositing Maldon Till in
those areas. This ice melted temporarily and deposited
large quantities of sand and gravel, the Chelmsford
Gravels, in the Chelmsford, Danbury and Tiptree areas.
The ice then surged again and penetrated the valleys
cut in the Hanningfield Till, particularly south-east
of Chelmsford, but did not over- ride the hills made
up of the Till. The deposit of this third ice advance
is known as the Springfield Till, which now blankets
the county north of the A12 trunk road and occurs in
certain valleys south of that road.
A diagrammatic representation of the sequence of events
(fig. 1) and a time sequence (fig. 2) are given below:
3. Decay of ice, cutting 4. 3rd ice advance, glaciers
of ice into or through penetrating valleys,
the Hanningfield Till. depositing Springfield
Till.