Assertion: granite's rock | /r/HasProperty | formed
Facets:
value: from volcanic activity
type: CAUSE
value: originally
type: MANNER
Source sentences:
text: Igneous rocks are formed from volcanic activity where the molten rock crystallizes deep below the surface with pressure and heat over millions of years.
text: Igneous rocks are formed from volcanic activity where the molten rock crystallizes deep below the surface with pressure and heat over millions of years.
text: Igneous rocks are formed when magma is cooled underground creating a plutonic rock.
text: The molten rock is formed when the naturally occurring radioactive elements within the ground break down and decay.
text: Porphyritic rocks are formed when a column of rising magma is cooled in two stages.
text: that is, a rock that was originally formed when lava or magma cooled—and while its composition can vary widely, most versions have two primary minerals: quartz (20 to 60 percent) and feldspar (about 35 percent).