The LPO of main minerals of ultramafic xenoliths including spinel lherzolite,spinel harzburgite and plagioclase bearing websterite which collected from Damaping,Hebei Province is analyzed and the seismic velocities of the rocks in X,Y,Z directions are obtained by two means:calculation and measure.
通过系统测定大麻坪尖晶石二辉橄榄岩、尖晶石方辉橄榄岩和含长二辉岩三类超基性岩包体中各主要矿物的晶格优选方位 (LPO) ,并用理论计算和实验测量得出地震波在岩石不同方向上的传播速度。
参考来源 - 河北大麻坪超基性岩包体的岩石组构和地震波速各向异性·2,447,543篇论文数据，部分数据来源于NoteExpress
后者以二辉石岩为代表，具典型堆积结构，与本区尖晶石二辉橄榄岩相比，具有较高的稀土元素丰度。
The latter is representive of pyroxenite, which displays the accumulate texture and has higher REE abundance than the Sp-lherzolite from the region.
玄武岩中构成宝石的橄榄石产于二辉橄榄岩包体中和少量的捕虏晶中。
The gem-grade olivines exist in lherzolite enclaves and some xenocrysts.
上地幔由超镁铁质的二辉橄榄岩组成，在尖晶石二辉橄榄岩和石榴石二辉橄榄岩之间有一过渡层。
The upper mantle consists of lherzolite, and it seems that there is a transition zone between spinel and garnet lherzolites.
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