地幔岩

The mantle is not layered,but that heterogeneity is created by fluids rich in "incompatible elem ents"

但是，某些地质学家，以对地幔捕岩体所作的观察为依据，指出地幔并非是分层排的，相

The reasons for higher initial Sr isotopic ratios are probably that there is enriched mantle endmember and the ophiolite underwent metasomatism of fluid from the melting of terrestrial matter in the course of formation.

ISr值偏高可能是存在富集型地幔源区和蛇绿岩形成过程中经受了地幔流体的交代作用引起的。

The rock is peridotite, which is one of t he main rocks in the upper mantle, an area that provides a girth below the Earth's crust.

这种岩石是橄榄岩，是上地幔的主要组成成分，地幔是地壳以下围绕地球一周的区域。

The rock is peridotite, which is one of the main rocks in the upper mantle, an area that provides a girth below the Earth's crust.

这种石头是一种橄榄岩，是上地幔中的一种主要岩石。地幔位于地壳下面，包围着地壳。

Sulfur isotope measurements of deposits such as those in the 1.1 Ga Duluth Complex, the Permo-Triassic intrusions of the Noril'sk area, and the 1.4 Ga Kabanga intrusions provide evidence for the derivation of S from both sulfide-and sulfate-bearing country rocks. The 1.3 Ga Voisey's Bay deposit provides an example where δ34S values of the ores commonly fall within the accepted mantle range of 0 ± 2‰, but detailed studies of Proterozoic metasedimentary country rocks show that their weighted average δ34S value is also within this range.

如1.1 Ga的Duluth杂岩、Noril'sk地区二叠-三叠纪侵入岩和1.4 Ga的Kabanga侵入岩体中矿床的硫同位素测定结果证明硫来自含硫化物和硫酸盐的围岩。1.3 Ga的Voisbey's Bay矿床矿石的硫同位素δ34S值通常落入公认的地幔硫同位素组成范围(0±2‰)内，而对其元古宙变质沉积围岩进行的详细研究结果显示δ34S的平均值也在此范围。

The Pl-lherzolite differs from the cumulates in having blastic texture and high-temperature deformed fabric of Ng[100] characteristic of the mantle peridotite and yielding orthopyroxene.

含长二辉橄榄岩以其具有地幔橄榄岩特有的变晶结构和Ng(100)高温变形组构，以及含斜方辉石等特点而区别于堆晶岩。

The mantle shear zone formed at lithospheric extensional setting of Meso-Tethys and reworked by serpentinization, cataclasis, and compressional deformation including deformed lens such as ophiolite, gabbro, and chronite, thrust faults, and folds produced during closure of the Meso-Tethys.

在南北向挤压导致海盆消亡的早期阶段，处于深层侵位环境的地幔橄榄岩由于物性的不均一性，变形分解作用产生不同尺度的透镜网络，如蛇绿岩体、辉长岩脉、纯橄岩异离体、豆荚状铬铁矿体、眼球状橄榄石、辉石残斑晶等。

The analysis of lamprophyrespetrology chemistry reveals that it is a series of high potassium- potassium dike rock,it is abandunt in alkali(K2O,Na2O)and has a large reducing capacity.The diagrams of the major-element variation shows that the geochemical compositions-variations of the major oxides have vague general rules of homologous magmatic fractional-crystallization.the pearce diagram of trace elements shows it intensively enriched in LILE,intensively depleted in coherence elements(such as CrNi.et al).

煌斑岩的岩石化学分析表明，乳山地区与金矿成矿相伴生的煌斑岩为高钾质-钾质的碱性脉岩系，富碱(K_2O、Na_2O)，具较强的还原能力(FeO含量均远高于Fe_2O_3含量)，在哈克图解上，主要氧化物的变异规律表现出岩浆分离结晶演化的特点；微量元素的Pearce图呈现强烈的富集LILE，强烈亏损过渡族元素，稀土元素呈向右倾斜的轻稀土富集配分模式，在有关源区性质判别的图解(Cr-Ce／Sr图解和Ce／Yb-Ta／Yb比值图解)上均显示富集地幔源区的性质。

Cu-Ni sulfided mine complex locate in BaimaZai of JinPing County is sub alkali iron-super iron, it"s zoning is clear and it"s Ni-Cu-Co melting first and enrichment, its rare earth is rich in right lean light rare earth, but Eu in olive rock is serious to be bad, Gd-Tb is tittles negative abnormity. Above-mentioned show that the mineral is cone from mantle, and didn t mix with crustal substance, and continent tholeiite magma turning into continent tholeiite emplacement after by surging.

金平白马寨铜镍硫化矿床杂岩体分带明显、属亚碱性铁质-超铁质岩、具Ni-Cu-Co三元素先熔离，后富集的规律、稀土配分为右倾斜轻稀土富集型，但橄榄岩铕亏损显著，Gd-Tb微小负异常，显示成矿物质来源地幔，与地壳物质无混染和大陆拉斑玄武岩浆上涌后变为大洋拉斑玄武岩浆侵位特点。

PGE analyses for the picrites of the middle Devonian Beitashan Formation at the south margin of Altai Mountains show that the PGE concentrations are within a narrow range, and their primitive mantle normalized PGE patterns resemble those from Grenada picrites, Lesser Antilles Arc in Atlantic, which is characterized by the enrichment of PPGE although the PGE contents of the researched picrites are higher than the latter, and lower than those from large igneous provinces.

本研究对新疆阿尔泰山南缘中泥盆世北塔山组地层中的苦橄岩的铂族元素进行了分析，结果表明：其铂族元素的含量总体变化不大，其原始地幔标准化曲线总体上和已经报道的大西洋Lesser Antilles岛弧的Grenada苦橄岩相似，均以富集把组铂族元素为特征，但总体含量比后者高，而比大火成岩省的苦橄岩低。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。