The rising heat from that nearly molten material then began shoving up the crust above it.

If molten material is included, the term phreato-magmatic may be used.

The measure helps to determine how easily the molten raw material will flow during processing.

The air jet is then used to blow away molten material.

Its aqueous solution conducts electricity as does the molten material.

The solidification rate of molten material can be tightly controlled.

Larger particles get molten radioactive materials deposited on their surface.

"I think it's an asteroid, or molten material which congealed by accident into that shape."

The molten material cooled and solidified before reaching the surface.

Extrusion of the remaining molten material to form the crust.