Assertion: volcano's magma | /r/HasProperty | brought to the surface
Facets:
Source sentences:
text: A tuff cone, sometimes called an ash cone, is a small monogenetic volcanic cone produced by phreatic (hydrovolcanic) explosions directly associated with magma brought to the surface through a conduit from a deep-seated magma reservoir.
text: A cryptodome occurs when magma is brought very near the surface but does not breach to the surface.
text: A tuff ring is a related type of small monogenetic volcano that is also produced by phreatic (hydrovolcanic) explosions directly associated with magma brought to the surface through a conduit from a deep-seated magma reservoir.