The metamorphic grades of Minleh and Changma areas are prehnite-pumpellyite and prehnite-actinolite facies, respectively.
民乐与昌马地区变质火山岩，变质度分别为葡萄石-绿纤石相和葡萄石-阳起石相。
Metamorphic grade
英语例句库
Some different metamorphic grade coals surface character was changed through the hypothermia thermal transnature in order to influnce the rheidity of coal-oil-water ternary material.
对几种不同变质程度的煤采用低温热改质,使煤表面的性质发生变化,从而影响煤油水三元料浆的流变性。
英语百科
Metamorphism
（重定向自Metamorphic grade）
Metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). The change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. The chemical components and crystal structures of the minerals making up the rock may change even though the rock remains a solid. Changes at or just beneath Earth's surface due to weathering and/or diagenesis are not classified as metamorphism. Metamorphism typically occurs between diagenesis 200°C, and melting 850°C.
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