Assertion: magma's temperature | /r/CapableOf | increase with depth
Facets:
value: steadily
type: MANNER
value: because of the geothermal gradient
type: CAUSE
value: in earth
type: LOCATION
Source sentences:
text: The crystals that settle might either form an olivine-rich layer near the bottom of the magma chamber, or they might remelt because the lower part is likely to be hotter than the upper part (remember, from Chapter 1, that temperatures increase steadily with depth in Earth because of the geothermal gradient).