Exeter and Its Region
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... Channel nor in the English Channel is there any evidence for accumulation of marine sediment of Miocene , Pliocene or Pleistocene age . At the present time large areas of the sea - floor in both channels are free of sediment ; and where ...
... Channel as far west as south of Plymouth ; and in the Bristol Channel besides Lias , Oxford Clay and Kimmeridge Clay have been proved ( Lloyd , 1963 ) . There is however nothing to suggest that the two channels existed as continuing ...
... Channel . Winter temperatures in the eastern Channel are much lower than in the west , and a number of cold - water species show a decline towards the western end of the Channel . Among these are the whelk ( Buccinum undatum ) , which ...