When magma hardens in a volcano's pipe
Volcanic necks Dikes Sills
Volcanic necks Dikes Sills
dikes sills and volcanic necks all have something to do with volcanoes
lava formed the volcanic mountains
A volcanic mountain.
Almost all tropical islands such as Hawaii
They were formed by the volcanic eruption
It was formed from a volcanic eruption
Volcanic islands are formed by volcanoes and are therefore composed of volcanic rock.
Volcanic Neck The surrounding rock weathers more easily than the magma in the pipe. The resultant structure will first appear as a low flat protrusion which is slightly elevated from its surroundings. With additional weathering of the surrounding rock, the hardened magma may appear as a tower with possible basaltic columnar structure known as a volcanic plug or volcanic neck.
Lava
A volcano.