Throughout much of the Quaternary period large expanses of the UK continental shelf was exposed as dry land (Fig.1). As the ice sheets advanced, the major rivers of southern England and northern France extended out onto this ever growing land expanse. However, when the ice sheets melted, the areas were drowned, except a chalk ridge stood between southern England and northern France such that the English Channel and North Sea were separate water bodies. We have used a variety of marine geophysical methods to explore these ancient landscapes, many of which are preserved on the floor of the present English Channel.
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