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Geology

Raised Beaches

There are many raised beaches around Jersey's coastline. These mark the level of past sea levels and are made up of pebbles, flints and sea bed chalk deposits.

Geology

Rozel Conglomerate

The Rozel Conglomerate Formation can be seen along the northeast of the Island and is made up of beds of pebbles which have been cemented together.

Geology

Jersey Granites

Jersey is famous for its granites, which have been favoured as a building material for thousands of years.

Geology

Jersey Shale Formation

The shales are the oldest rocks in the Island. You can see them in the west, across the centre and in the south of Jersey. They were formed by mud, silt and sand brought together on the sea floor about 600 million years ago. These sediments were transformed into rock by being pushed together, hardened and folded.

Geology

Minerals of Jersey

Minerals are made from elements like silicon, oxygen, aluminium, iron and other metals.