拉斑系列

其原岩岩石类型有火山岩，陆缘碎屑沉积岩，火山、岛弧拉斑系列或钙碱系列火山岩、蛇绿岩等。

Their original rocks are volcanic rocks , epicontinental clastic sedimentary rocks , and ophiolite of volcanic and island arc tholeiitic series or calcium alkali series .

它们分属两个不同的岩浆系列：辉长岩属拉斑系列，TiO2，Fe~（3+）/Fe~（2+）和REE丰度较高；

They were derived from different magma series : the gabbro was derived from tholeiitic magma series with higher TiO_2 , REE abundance and Fe ~ ( 3 + ) / Fe ( 2 + ) ratio ;

其中的玄武岩主要属钙碱性系列，少数属拉斑系列。

The basalts are mainly of calc-alkaline series rather than tholeiites .

对青藏高原羌塘地块中部双湖地区发育的二叠系碱性系列和拉斑系列玄武岩进行了详细的地球化学研究。

This paper reports the petrological and geochemical characteristics of Permian alkaline and tholeiitic basalts in the Shuanghu Area , central Qiangtang Block .

北带玄武岩属碱性玄武岩系列，南带玄武岩属拉斑玄武岩系列；北带玄武岩富集Rb、Th、Ta、Nb，与洋岛碱性玄武岩稀土曲线一致；

The basalt in the north zone belongs to the alkaline basalt series , enriched in Rb , Th , Ta and Nb , showing that its characteristics are consistent with those of oceanic island basalt .

钙碱性玄武岩系列和拉斑玄武岩系列玄武岩具有低的REE含量和亏损的LREE配分型式，表明它是由LREE亏损和HREE略有富集的地幔部分熔融形成；

The REE of calc-alkali basalt and tholeiite are characterized by lower amounts of REE and LREE-depleted distribution pattern and which reflect that the basalts were formed by the partial melting of LREE-depleted and slightly HREE-rich mantle .

大部分样品属碱性玄武岩系列，个别属拉斑玄武岩系列。

Basalt series and only one sample belongs to tholeiite series .

岩浆起源于上地幔，属于拉斑玄武岩系列，发生过金属硫化物的熔离作用。

The magma originated from the upper mantle and belongs to the tholeiitic series which has undergone immiscible separation of metal sulfide .

第一旋回基性火山岩属碱性系列，第二、三旋回基性火山岩属拉斑玄武岩系列。

The basic volcanic rocks of the first cycle belong to the alkali basalt magma series and those of the second and the third cycles the tholeiitic magma series .

基性端员属碱性系列和亚碱性系列，亚碱性系列又可分为钙碱性系列和拉斑玄武岩系列。

The basic end-member of the bimodal volcanics can be divided to alkaline and sub - alkaline series , and the sub alkaline series can be subdivided to calc - alkaline and tholeiitic series .

根据大量岩石化学分析结果及稀土元素配分模式判断，大部分属大洋拉斑玄武岩系列，部分为钙碱玄武岩系列。

On the basis of quantity calculation of petrochemistry data and from the judge of distributed model of rare-earth elements , these , rocks mainly belong to the oceanic tholeiite series and a part belongs to the lime-alkali series .

研究表明，冲绳海槽火山岩均属亚碱性系列，基性岩具有拉斑玄武岩系列和钙碱性系列的过渡性，中、酸性岩多属钙碱性系列；

The studies show that the rocks in Okinawa Trough is of a subalkaline rock series . The basic rocks belong to a transitional form between tholeiite series and calc alkalic series while most of the intermidiate rocks and acid rocks belong to calc alkalic series .