The massif is composed of crystalline basement (metamorphic and igneous rocks) with Proterozoic to early Paleozoic ages. It was See more

The period from which the island has exercised most economic influence on modern Europe was the Carboniferous. As the continent was drifting past the Equator, on the island's shores, there grew a rich tropical forest swamp. On the island's southern shore, it … See more

In the early Jurassic, the Rhaetic sea flooded much of the Permian plain. On the margin of the London–Brabant Island, the estuarine conditions … See more

It is now best viewed as a block of dense crust floating deeply sunk into the mantle and overlain with less dense superficial rocks. It depresses the boundary of the crust and the mantle ( See more

As the continent drifted northwards, away from the Equator, through the latitudes represented today by the Sahara desert, the erosion was … See more

By the Cretaceous the island had sunk much further in relation to the sea level. Before the end of the period, the British end was buried in Upper Cretaceous chalk. This … See more

• Geologic time scale
• Proterozoic See more