原生岩浆

形成岩体的大部分岩浆已经不是原生岩浆，而主要是由演化程度不同的岩浆组成。

A majority of magma which forms the rock body is not the primary magma , it mainly composed by different evolution degree magma .

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。

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 .

原生岩浆密度可作为判定岩浆产出的地球动力学背景的重要标志之一。

So , the density of primary basaltic magmas is a important criteria to distinguish geodynamics settings in which magmas formed .

富钾的火山岩则是原生岩浆在深位岩浆房（>40-50km深度）经镁铁矿物的分离结晶过程演化而来。

The potash-rich volcanic rocks were formed by fractional crystallization of mafic minerals in deep-level chamber ( > 40 ~ 50 km in depth ) .

利用同源不同程度平衡部分熔融作用形成的两种原生岩浆岩的微量元素浓度，提出了一种定量反演原岩微量元素丰度的方法。

Using trace element concentrations of consanguineous primary magmas formed by different degrees of equilibrium partial melting , the author has put forward an inverse method for quantitatively calculating trace element abun-dances of source rocks .

白榴玄武岩为次生岩浆冷凝产物，是原生岩浆分离结晶约14%的橄榄石、辉石堆积岩，又同化混染了约28%的花岗岩所形成。

Leucite basalt was solidified by secondary magma , which was produced by fractional crystallization of a small amount ( 14 % ) of accumulative rock from primitive magma and assimilation of granite ( 28 % ).

苦橄白榴岩、橄榄白榴玄武岩为原生岩浆冷凝产物，由金云母二辉橄榄岩成分的上地幔经部分熔融（约3.5-4.3%）所形成。

Based on the petrology , geochemistry and calculation , we suggest that the picrite-leucitite and olivine-leucite basalt were solidified by primitive magma which derived from phlogopite-bearing lherzolite mantle by partial melting , the degree of partial melting is respectively 3.5 % and 4.3 % about .

本文通过计算不同构造环境的原生玄武岩岩浆密度，首次提出了两种原生玄武岩浆密度类型：岛弧玄武岩浆（AB）密度类型（Ⅰ）；

The paper has calculated magma density of basaltic rocks from various tectonic settings . It firstly suggested that two types of magma density : ⅰ density type of primary basaltic magmas in Arc Regions ;

原生裂缝是岩浆冷凝结晶过程中形成的裂缝；次生裂缝是火山岩及其原生裂缝系统受后期构造运动、溶蚀、风化等作用改造而形成的裂缝。

Primary fracture were formed during the lava crystal and the secondary fracture generated during the volcanic reconstruction by tectonic movement , and wind action , solution .