Feeder, Dykes and Sills Flashcards Preview

Diamonds > Feeder, Dykes and Sills > Flashcards

Flashcards in Feeder, Dykes and Sills Deck (3):
1

What is a volcano feeder?

Long complex set of cracks through to the mantle and continental crusts which hot gas, corrosive magma travel through the surface.

2

Do most feeder reach the surface

No, most feeders do not reach the surface.

3

What happens after the magma passes through?

Usually, the feeder seals, the pressure is lower and the magma cools and forms a dyke and may inject itself into a horizontal gaps in rock layers to form flat sills.