Glacial Lake Humber
During the last ice age, a glacier extended across this area almost to where Doncaster now is. The main glacial front was at Escrick where the Escrick moraine marks its furthest extension. This formed the northern limit of an extensive lake which was impounded by the blocking of the Humber gap by another ice front. The lake bottom was gradually filled with clay sediments, which are up to 20 metres thick in some places. These clay sediments are locally overlain by peat deposits forming raised mires. At the base of the peat layers can be found the remains of a buried forest.
Read more about this topic: Humberhead Levels
Famous quotes containing the word lake:
“A lake is the landscape’s most beautiful and expressive feature. It is earth’s eye; looking into which the beholder measures the depth of his own nature. The fluviatile trees next the shore are the slender eyelashes which fringe it, and the wooded hills and cliffs around are its overhanging brows.”
—Henry David Thoreau (1817–1862)