The youngest part of the London Clay, known as the Claygate Beds or Claygate Member forms a transition between the clay and the sandier Bagshot Beds above. This is shown separately on many geological maps, and often caps hills. It is up to 15 metres (49 ft) thick at Claygate, Surrey. It is now believed to be diachronous, with the formation at Claygate for example being the same age as the end of the fourth cycle of deposition further east.
Read more about this topic: London Clay
Famous quotes containing the word beds:
“Alice opened the door and found that it led into a small passage, not much larger than a rat hole: she knelt down and looked along the passage into the lovliest garden you ever saw. How she longed to get out of that dark hall, and wander about among those beds of bright flowers and those cool fountains, but she could not even get her head through the doorway.”
—Lewis Carroll [Charles Lutwidge Dodgson] (1832–1898)