tholeiite series

The basalt in the south zone belongs to tholeiite series, enriched in all the trace elements and REE except Y, Yb, Sc and Cr, showing its characteristics are consistent with those of oceanic tholeiite.

南带玄武岩除Y、Yb、Sc、Cr外，其他均富集，显示与大洋拉斑玄武岩曲线一致。

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.

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；

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.

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。

Abundant copper material was derived from volcanic rock series ( olivine tholeiite ) in the rift.

丰富的铜质来自巨厚的裂谷火山岩系 ( 橄榄拉斑玄武岩 ).

Basalt series and only one sample belongs to tholeiite series.

大部分样品属碱性玄武岩系列，个别属拉斑玄武岩系列。