mafic
adjective[not gradable]
us/ˈmæf·ɪk/earth science
describesrockscontainingmore dark-coloredsubstancesandironthan otherrocks
| 单词 | mafic |
| 释义 | mafic adjective[not gradable] us/ˈmæf·ɪk/earth science describesrockscontainingmore dark-coloredsubstancesandironthan otherrocks Examplesofmaficmafic During this stage, themaficminerals grow faster than plagioclase, exhausting the local melt inmaficcomponents. From theCambridge English Corpus Small amounts ofmaficand opaque minerals occur. From theCambridge English Corpus On the basis of our combined data, a more appealing model for themafic-ultramafic complexes is the emplacement of solitary intrusions. From theCambridge English Corpus This is in agreement with return to moremaficdetritus and the proposed increased upper continental crust contribution, together at the expense of felsic detritus. From theCambridge English Corpus In continental rift settings, the emplacement of such large volumes of felsic melts requires a huge amount ofmaficmagma derived from uprising asthenosphere. From theCambridge English Corpus In particular, the heat for the melting may have been supplied bymaficmantle-derived magmas. From theCambridge English Corpus In weakly deformed gneiss, themaficminerals (biotite, augite and hornblende) occur as irregular clusters, locally separated from plagioclase by coronas of garnet. From theCambridge English Corpus Themaficmagmas were probably derived from the upper mantle (spinel stability field) by 9 % partial melting. From theCambridge English Corpus Sampling was limited to the chromitite layers and laminae that occur in themafic-ultramafic cumulates of these complexes. From theCambridge English Corpus The thrust truncates a number of verticalmaficlayers in the footwall block. From theCambridge English Corpus It is obvious that the compositions ofmafic- ultramafic complexes like these have been greatly influenced by cumulate processes. From theCambridge English Corpus In general, eclogites are predominantlymaficand are preserved as boudins within felsic gneisses. From theCambridge English Corpus The formation is vertically zoned with the appearance of banded andmaficpumices approximately 8 cm above the base of the ignimbrite. From theCambridge English Corpus Themaficshells do not show up clearly due to weathering. From theCambridge English Corpus Amphiboles from the core, the inner and outermaficshells and the matrix were analysed. From theCambridge English Corpus These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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