黑云母一般是镁铁质及超镁铁质岩石中的次要成分。
Biotite is a subordinate constituent of the mafic and ultramafic rocks generally.
前人对该地区二叠纪镁铁质—超镁铁质岩石的研究程度较低。
The studying degree of the predecessor is low to the Permian mafic-ultramafic rock.
近年来，应用地球动力学研究镁铁质-超镁铁质岩石演化取得了一些重要进展。
Recently, several important progresses have been made in the geodynamics concerning the evolution of mafic and ultramafic rocks.
近年来，应用地球动力学研究镁铁质-超镁铁质岩石演化取得了一些重要进展。
Recently, several important progresses have been made in the geodynamics concerning the evolution of mafic and ultramafic rocks.
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