查询词典 basaltic

The volcanic rocks consist of trachytic basalt, basaltic latite, latite and trachyte. The characteristics of this volcanic sequence are: low TiO2 and silica saturation, high alkalis, high K2O/Na2O value and Fe2O3/FeO value, high and variable Al2O3, enrichment in Rb, Sr, Ba, Zr, U, Th and LREE.

岩石硅近饱和，全碱含量（尤其是K2O）高，K2O／Na2O、Fe2O3／FeO比值大，Al2O3含量高且变化大，TiO2含量低，富集Rb、Sr、Ba、Zr、Th、U和LREE等元素，稀土配分为轻稀土富集型，锶、铅、氧等同位素显示了岩浆的幔源特征。

Petrogenesis simulation indicates that the Tianheyong primitive basaltic magma may have been the product of polybaric melting column with nonmodal partial melting processes of enriched lherzolite, which straddle the boundary of garnetand spinelfacies lherzolite.

岩石成因模拟表明，形成天和永玄武岩的原生岩浆是在变压、部分熔融的条件下富集地幔源区岩石非实比熔融的产物，变压熔融柱穿切了Sp/Gt二辉橄榄岩相边界。

The Tertiary basaltic rocks are discontiously distributed from the west to the northeast of Sudan, in the Sahara Desert, overlying the Cretaceous clastic rocks. The authors of this paper found a kind of columnar jointing in the Cretaceous clastic rocks in the Mellit area, western Sudan.

笔者在苏丹西部Mellit地区白垩系碎屑岩中发现一种罕见的柱状节理，经研究认为是沉积岩层受到中新世喷发的玄武岩熔岩流的烘烤而失水收缩形成的。

The Cretaceous sedimentary rocks were baked by the basaltic lava flow erupted in the Early Miocene, contracting in volume owing to loss of water contained mainly in the clays of the clastic rocks, and thus forming the columnar jointing. According to the occurrences of jointing and the sedimentary strata the authors calculated the two different rotations of the Mellit block: the block tilted toward 338° for 18° from Late Cretaceous to the beginning of Miocene, and tilted toward 138° for 18° since Miocene.

可以合理地假定柱状节理在形成时是垂直于大地基准面的，根据柱状节理和沉积岩层的产状，笔者计算出Mellit地块的两期旋转事件：自晚白垩世初期到中新世初期该地块向338°方向倾斜了18°，而自中新世以来又向138°方向倾斜了18°。

During these events, the potassic volcanic rocks of Oulituozi were produced during extension stage of the rift with subsequent fractional crystallization and derived from basaltic magma.

欧利坨子富钾质火山岩的形成是裂谷期岩石圈伸展作用的产物，是玄武质岩浆经过大比例分离结晶作用的产物，可能与晚中生代太平洋板块俯冲残片的部分熔融有密切关系。

During these events, the potassic volcanic rocks of Oulituozi were produced during extension stage of the rift with subsequent fractional crystallization and derived from basaltic magma. The genesis of the volcanic rocks possibly had a close relation with partial melting of the subducted slab of Pacific Plate oceanic crust.

欧利坨子富钾质火山岩的形成是裂谷期岩石圈伸展作用的产物，是玄武质岩浆经过大比例分离结晶作用的产物，可能与晚中生代太平洋板块俯冲残片的部分熔融有密切关系。

On the basis of an integrated analysis of the geochemical features of these volcanic rock associations,this paper concludes that thebasalts originated mainly from interaction between mantle-derived magma and low-crustal materials, and rhyolitic volcanic rocks resulted from thermal and chemical interaction between basaltic magma and the upper part of crustal materials.Basalts and rhyolites in different cycles have different source regions,and they are products of multiperiodic pulsive layer partial melting.

根据对火山岩地球化学特征的综合分析表明，玄武岩主要为幔源岩浆与下部地壳岩石相互作用的产物，而流纹岩则为玄武岩浆与上部地壳物质进行热及成分交换的结果，不同旋回的玄武岩和流纹岩有不同的源区，为多次脉动分层部分熔融的产物。

From late Jurassic-early Cretaceous to late Cretaceous, the magmatic activities decrease and the compositions of magmas change from shoshonitic and rhyolitic to alkaline basaltic.

从晚侏罗世—早白垩世早期到晚白垩世，中国东部岩浆作用明显减弱，岩浆成分从钾玄质和流纹质向碱性玄武质转变。

These subvolcanics, in which basalt, basaltic andesite and andesite are dominant, are petrochemically of calc alkaline affinity of subalkaline series and sodic type, and tend to have moderate low total REE, being LREE enriched.

岩石化学上属亚碱性系列、钙碱性火山岩系、钠质类型；稀土总量中低，属轻稀土富集型，稀土分布模式为右倾平滑曲线或略有正、负铕异常；过渡族元素球粒陨石标准化曲线形态呈&W&型，锶初始值为 0 。70 5398，反映物质来源较深。

Volcanic eruptions happened: the 1st and 3rd are fissure eruptions of intermediate-basic basaltic andesite and are resulted from the structures of active period, while the 2nd belongs to central eruption of neutral trachyandesite and is derived from the structure of stabilized period.

其间包括3次火山喷发活动，第1次和第3次为中基性玄武安山岩的裂隙式喷发，为构造活动期的产物；第2次为中性粗安岩的中心式喷发，为构造稳定期的产物。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。