mafic
Speech parts
1. mafic - Noun
2. mafic - Adjective
Meaning
mafic (comparative more mafic, superlative most mafic)
(geology) Describing rocks, such as silicate minerals, magmas, and volcanic and intrusive igneous rocks, which contain relatively high concentrations of magnesium and iron.
Synonyms: ferromagnesic, basic
Antonyms: felsic, acidic
mafic (plural mafics)
A rock with such properties.
Phrases with the word
Examples
Mantle plume hypotheses may rely on identifying mafic and ultramafic intrusions and coeval basalt volcanism.
M-type or mantle derived granite was later proposed to cover those granites that were clearly sourced from crystallized mafic magmas, generally sourced from the mantle.
Rare feldspathoid -rich mafic rocks, akin to alkali basalts, may have Na 2 O + K 2 O contents of 12% or more.
They are (or were) the hottest lavas, and probably more fluid than common mafic lavas.
Chemically, mafic rocks are on the other side of the rock spectrum from the felsic rocks.
Felsic, intermediate and mafic igneous rocks Those rocks that contain the most silica, and on crystallizing yield free quartz, form a group generally designated the "felsic" rocks.