Keywords |
  • Volcanology

Protrusion

A geological protrusion forms during a volcanic eruption when the extreme viscosity of the lava causes it to rise slowly in the form of a cylindrical piston called a "volcanic spine".

Volcanic spine in the Cantal strato volcano (Credit: Laurent Sacco/Futura-Sciences).
Volcanic spine in the Cantal strato volcano (Credit: Laurent Sacco/Futura-Sciences).


Latest

Fill out my online form.