Does asthenosphere contain magma chambers?

Thanks for the A2A - The word 'chambers' makes it sound like some kind of prepared space ready and waiting to be filled with magma might exist within the asthenosphere. read more

The word ‘chambers’ makes it sound like some kind of prepared space ready and waiting to be filled with magma might exist within the asthenosphere. That’s not the case - what happens is that, in small local spots, conditions reach a point (heat and pressure combined) where the hot but solid rock of the asthenosphere begins melting to a fluid. read more

How magma chambers form The decrease in pressure allows rocks in this part of the Earth to melt and collect in magma chambers where they erupt as pillow basalt on the ocean floors. Boundaries of the lithosphere The boundary with the lithosphere lies between 100 and 200 kilometers deep. read more