Assertion: erupted magma | /r/Desires | several distinct reservoirs
Facets:
value: within the mantle
type: LOCATION
value: chemically
type: MANNER
Source sentences:
text: The second major question is how the differing chemical compositions of erupted magmas, which, require several chemically distinct reservoirs within the mantle, can be reconciled with other observational and dynamical constraints favoring whole-mantle convection, which should mix chemical heterogeneities.