primary magma

The primary gold includes gold bearing quartz vein type, associated gold type, tectonic altered rock type, magma type and dissemination type.

原生金矿有含Au石英脉型、伴生金型、构造蚀变岩型、岩浆岩型及浸染型。

The isotopic ratios in the basalt are restricted not only by the characteristics of the mantle providing primary magma of basalt, but also by partial melting degree of the mantle.

玄武岩同位素的比值不仅受玄武岩浆地幔源区本身的特征制约，还可能受地幔岩部分熔融程度的制约。

Consequently, the greenschists in the central Fujian province are considered to be derived from the continental tholeiite formed in a continental rift tectonic setting. Its primary magma is high MgO tholeiite.

因此，绿片岩原岩为大陆拉斑玄武岩，其形成的构造背景为大陆裂谷。原生岩浆是高镁拉斑玄武岩浆。

They show a LREE depletion and their Ti/ V, Th/ Ta, Th/ Yb, Ta/ Yb indicate that their primary magma originated from depletive mantle of asthenosphere by high degree equilibrium partial melting, must be considered as component of the ophiolite.

它们具有轻稀土亏损型配分型式，Ti/V、Th/Ta、Th/Yb、Ta/Yb比值指示其原始岩浆来源于软流圈亏损地幔的高程度平衡部分熔融。