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magmas  search
NTacidic magmas
 mafic magmas
RTigneous rocks
 country rocks
 crystal fractionation
 fractional crystallization
 crystal zoning
 hot spots
SNUsed for naturally occurring, mobile rock material, generated within the Earth and capable of intrusion and extrusion.
magmas and magmatic differentiation  search
SNNot a valid GeoRef index term after 1970. Was used in subfile N. See magmatic differentiation.