Scarlett Volcanics

The end of limestone deposition in the Isle of Man was marked by the explosive eruption of a volcano which formed the basaltic rocks now exposed between Scarlett and Poyllvaaish.
Vents and fissures along which magma flowed to surface can be seen in the area around Scarlett Point.

Basalt lava and ash are
erupted from a volcano
which form the Scarlett
volcanics at Castletown
Lava erupted under water
can form pillow-shaped structures,
rather like toothpaste being
squeezed out of a tube
Dykes are fissures in which magma solidifies
before reaching the surface

This photograph shows volcanic rocks at Poyllvaaish