Assertion: magma | /r/HasProperty | formed
Facets:
value: by melting the crust
type: MANNER
value: between 600°c
type: TEMPORAL
Source sentences:
text: Once magma has been formed, it is forced upward into and through the crust by pressure from below – traveling through cracks in the existing solid rock – and will often melt some of the rock it passes, creating more magma.
text: Most magmas are formed between 600°C and 1300°C (Figure 8.13).
text: When tectonic plates collide and rub against each other, magma is formed there.
text: we also know it had to be formed by melting the crust because isotopically, the impact melt is the same as what the crust is isotopically (rather than the mantle or the asteroid).
text: After it is formed, the magmatic deposit can keep still for long periods of time, and only with temperature rises or pressure reductions it moves towards the Earth’s surface.
text: At any rate, it is somewhat above this discontinuity that magma is formed.