what type of sediments are the white cliffs of dover made of
White Cliffs of Dover The White Cliffs of Dover are cliffs that form part of the English coastline facing the Strait of Dover and France. The cliffs are part of the North Downs formation. The cliff face, which reaches up to 350 feet (110Â m), owes its striking appearance to its composition of chalk accented by streaks of black flint. The cliffs stretch along the coastline for eight miles (13 km), spreading east and west from the town of Dover in Kent, and part of them were purchased by the National Trust in 2016.[1] They are part of the Dover to Kingsdown Cliffs Site of Special Scientific Interest[2] and Special Area of Conservation[3]
Coal mining in the United Kingdom There is no mention of coal mining in the Domesday Book of 1086 although lead and iron mines are recorded.[11] In the 13th century there are records of coal digging in Durham[12] and Northumberland,[13] Nottinghamshire and Derbyshire, Staffordshire, Lancashire, the Forest of Dean and North[14] and South Wales. At this time coal was referred to as sea cole, a reference to coal washed ashore on the north east coast of England from either the cliffs or undersea outcrops. As the supply of coal on the surface became used up, settlers followed the seam inland by digging up the shore. Generally the seam continued underground, encouraging the settlers to dig to find coal, the precursor to modern operations.[9]