蛇绿岩

基本解释 (translations)

ophiolite

与蛇绿岩相关的网络例句 [注：此内容来源于网络，仅供参考]

Luobusa ophiolite in southern Xizang is one of the best outcrop and the most study in east segment of Yarlung Zangbo ophiolite belt.

罗布莎蛇绿岩是雅鲁藏布江蛇绿岩带东段出露较好，也是研究程度较高的蛇绿岩片之一。

Oceanic lithospheric mantle harzburgite occurs together with meta-cumulate complex (including garnet pyroxenite and kyanite-eclogite) and MORB-related eclogite; these represent blocks of oceanic lithosphere.

2大洋蛇绿岩型地幔橄榄岩，与变质的堆晶杂岩(包括石榴辉石岩、蓝晶石榴辉岩)和具有大洋玄武岩特征的榴辉岩构成典型的蛇绿岩剖面，代表大洋岩石圈残片。

Oceanic lithospheric mantle harzburgite occurs together with meta-cumulate complex (including garnet pyroxenite and kyanite-eclogite) and MORE-related eclogite; these represent blocks of oceanic lithosphere.

2大洋蛇绿岩型地幔橄榄岩，与变质的堆晶杂岩（包括石榴辉石岩、蓝晶石榴辉岩）和具有大洋玄武岩特征的榴辉岩构成典型的蛇绿岩剖面，代表大洋岩石圈残片。

The Sr Nd Pb isotopic compositions of crust lavas are characterized by higher initial Sr isotopic ratios,lower Nd isotopic ratios,large εNa and enrichment in radiogenic lead.

罗布莎蛇绿岩是雅鲁藏布江蛇绿岩带东段出露较好，也是研究程度较高的（蛇绿岩片之一，其壳层熔岩的Sr，Nd，Pb同位素组成具有较高的ISr值，较低的Isd值，大的εNd值和富集放射性成因铅的特征。

This paper briefly introduces the basic fact of the existence of the PaleoTethys Ocean in the Lungmu Co-Shuanghu suture, i.e. the ages and natures of Early Paleozoic ophiolites, Permian ophiolites, Devonian-Permian radiolarian cherts, accretionary slabs of different natures, two types of tectonic mrlange zones and covers of ophiolites. The starting time of the Paleo-Tethys Ocean in Qiangtang may be traced back to Early Paleozoic and the records about the oceanic basin evolution persisted from the Late Devonian to Late Triassic.

简要介绍了龙木错-双湖缝合带中有关古特提斯洋存在的基本事实，即早古生代洋壳残片、二叠纪蛇绿岩、泥盆纪-二叠纪放射虫硅质岩、各类不同性质的增生岩片、2种类型的构造混杂岩带和蛇绿混杂岩盖层体系的时代与性质等，已有的资料初步确定羌塘古特提斯洋盆演化的时限为晚泥盆世到晚三叠世。

The ophiolites can be divided into two groups at least; one lies in the Kuhai complex and intersected by Caledonian island granite, which may be attributed to Caledonian or pre-Caledonian ophiolite association; the other lies in the Early Permian — Early Triassic Ma'erzheng Fm. of Buqingshan Gr., including ultramafic rock, basalt, diabase dike and pelagic siliceous-argillaceous association, and Early Permian radiolarian are found in the silicates, which reflect that the time is Hercynian.

其中蛇绿岩组合至少可分出两套，其一就位于变质的苦海杂岩中，被加里东期岛弧型花岗岩侵入切割，可能属加里东期或前加里东期的蛇绿岩组合；其二就位于早二叠世—早三叠世布青山群马尔争组中，包括超镁铁质岩、玄武岩、辉绿岩墙及远洋硅泥质岩组合，其中硅质岩中发现有早二叠世放射虫，说明其形成于海西期。

However, relating to investigate the modes, courses and characteristics of the orogenetic process in Paleozoic and after orogenetic process, the cognitive divergence have still occurred.

通过对新疆北东部地区不同构造区带构造作用的方式、过程和特点的研究，确定：①南天山榆树沟高压麻粒岩地体的正变质原岩是一个基本完整的蛇绿岩套，其经历了俯冲至下地壳的高压麻粒岩相、构造抬升至深地壳麻粒岩相以及快速构造折返至角闪岩相的变质过程，代表了南天山洋壳俯冲、变质、随后折返的过程，并首次确定了变质过程的PTt轨迹；②奥陶纪末期中天山北缘发生洋盆俯冲、地体增生作用，此时萨日达拉地区处于岛弧活动带；中石炭世晚期中天山小型洋盆关闭，准噶尔地块与伊犁—中天山板块斜向对接随后发生脆韧性质近水平高温低速右行走滑剪切；③根据巴音沟地区不构成蛇绿岩套有效成分的硅质岩具有与活动大陆边缘密切相关的地球化学特征以及洋中脊玄武岩显示其岩浆源区受到消减带流体交代作用的影响，结合区域地质资料，首次提出巴音沟蛇绿岩带所代表的洋盆古构造环境为弧后盆地，并于早石炭世至中石炭世末期间，经历了扩张、收缩和闭合过程；④首次在克拉麦里蛇绿混杂岩带中分解出具有N-MORB、T-MORB与OIB三种不同类型的火山岩岩石组合，反映了洋盆俯冲

For Southwestern Margin of Aqikekule Lake ophiolite, their field geological, petrological, minerological, petrochemical and geochemical characteristics show that:① it outcropped as tectonic slices along the near west-to-east strike Kunzhong fault and is composed of metamorphic perodotties, cumulates and volcanic rocks, in which, chromites are distributed in the upper part of metamorphic peridotites as pods, or in the lower part of cumulates as near-strata;② metamorphic peridotites include serpentinites, chromite-bearing serpentinites, chlorite-epidote schists and chromitites, of which, chromitites have nodular and orbicular structure, and cumulates include pyroxenits, serpentinites, chromite-bearing serpentinites, chromites and metamorphically mafic rocks and only basalts are seen in volcanic rocks;③ Cr# of chromites suggest that they formed in the SSZ and Al〓O〓 and TiO〓 of metamorphic peridotites also suggest SSZ environment;④ metamorphic peridotites have V type and enriched LREE patterns, cumulates have from strongly depleted LREE, flat REE to enriched LREE patterns with universally striking positive Eu anomalies and basalts show flat REE or slight enriched LREE patterns with no Eu anomalies;⑤ trace element and Sm-Nd isotope characteristics of metamorphic peridotites imply their strikingly heterogeneous mantle character ε〓(t+4.39～+26.20 and later Nb, Ta fertilization;⑥ trace element characteristics of basalts and their tectonic diagrams show they probably formed in the rifted island arc or back-arc basin environment.

对阿其克库勒湖西南缘蛇绿岩，野外地质、岩石学、矿物学、岩石化学以及地球化学等特征表明：①该蛇绿岩以近东西向、沿昆中断裂呈构造岩片出露，由变质橄榄岩、堆晶岩和火山岩三个单元组成，其中见铬铁岩呈豆荚状产于变质橄榄岩的上部，或呈似层状产于堆晶岩的下部；②变质橄榄岩包括蛇纹岩、含铬铁矿蛇纹岩、绿帘绿泥片岩和铬铁岩等类型，其中，豆荚状铬铁矿具有结核状构造和球状构造，堆晶岩包括辉石岩、蛇纹岩、含铬铁矿蛇纹岩、铬铁岩和变质基性岩等类型，火山岩仅见玄武岩；③铬铁矿的Cr#表明其形成在俯冲带，变质橄榄岩的Al〓O〓和TiO〓成分也指示了SSZ环境；④变质橄榄岩的稀土配分型式见V型和LREE富集型两种型式，堆晶岩表现出从LREE强烈亏损、REE平坦分布到LREE富集的配分特征，并且普遍具有醒目的正Eu异常，玄武岩的稀土配分型式表现为平坦型或LREE略富集，无Eu异常；⑤变质橄榄岩的微量元素及Sm-Nd同位素特征指示了其地幔的显著不均一性ε〓(t为+4.39～+26.20以及Nb、Ta在后期的富集；⑥玄武岩的微量元素特征及构造图解表明其可能形成在裂谷岛弧或不成熟的弧后盆地环境。

Based on the field survey, we analyzed geochemical characteristics of more than 500 spinel samples from the Yarlung-Zangbu ophiolites, in order to present and discuss geneses and geodynamics of the Yarlung-Zangbu ophiolites. Mineral chemistry has revealed that the Yarlung-Zangbu ophiolites are the product of suprasubduction. This conclusion is similar to that of other related researched in recent years.

在野外调查基础上，对雅鲁藏布江蛇绿岩中500多个尖晶石样品的地球化学特征进行了分析研究，以探讨蛇绿岩的成因及其动力学背景，提出雅鲁藏布江蛇绿岩带属于超俯冲作用的产物，与近年来其他研究成果的认识一致。

The ultramafic rocks outcropped at the Altyn region are all harzburgites. Remant grains of primary minerals have melted residual texture and elastic deformation texture under high temperature and pressure. The whole-rock analyses show their low TiO〓 contents (0.01～0.04%), low Al, Ca and high MgO contents and wide Mg〓 range (89.35～95.57). Rare earth patterns have two types, namely tabacco pipe-shped and LREE-shaped, of which the former is often seen. The chondrite-nomalized Yb values of these analyses are all lower than 1. The spinels have low Ti and high Cr content and most spinels have Cr# higher than 60. All of the above characteristics show that the ultramafic rocks in the Altyn fault zone are components of metmorphic peridotites of ophiolite from depleted mantle source and most ophiolites from this zone belong to supra-subduction zone type ophiolite with a few mid-ocean ridge basalt type.

阿尔金露头区的超基性岩全为方辉橄榄岩，残余的新鲜矿物颗粒发育有熔融残余结构和高温高压下塑性变形结构，全岩分析显示样品TiO〓的含量低，为0.01～0.04％，具有低的Al和Ca，MgO含量高，Mg〓为89.35～95.57；稀土配分型式有两种，即烟斗型和LREE亏损型，前者占绝大多数，Yb球粒陨石标准化后的值全都小于1；尖晶石低Ti高Cr，大部分尖晶石的Cr〓大于60，上述特征说明阿尔金超基性岩是蛇绿岩的地幔橄榄岩成员，来自亏损的地幔源区，阿尔金蛇绿岩大多属于俯冲带之上型蛇绿岩，有少量的大洋中脊型蛇绿岩。

与蛇绿岩相关的网络解释 [注：此内容来源于网络，仅供参考]

ophiolite：蛇绿岩

在造山带进行区域地质调查,要特别注意对混杂岩(Melange)和"蛇绿岩"(Ophiolite)的调查和研究,除采用岩石地层方法建立正式和非正式地层单位外,对蛇绿混杂岩中不同类型的岩块或岩片均需详细填绘.

ophiolite：蛇绿岩系

蛇菊石 Ophiceras | 蛇绿岩系 ophiolite | 蛇丘槽 esker trough

ophiolite suite：蛇绿岩套

Ophioglossum 瓶尔小草孢属 | ophiolite suite 蛇绿岩套 | ophiolite 蛇绿岩

ophiolite suite：蛇绿岩系

蛇绿岩 ophiolite | 蛇绿岩系 ophiolite suite | 蛇绿岩组,蛇绿岩系,蛇绿岩套 ophiolitic suite

ophiolite formation：蛇绿岩建造

ophiolite 蛇绿岩 | ophiolite formation 蛇绿岩建造 | ophiolitic melange 蛇绿混杂岩

ophiolite emplacement：蛇绿岩侵位

olistostrome 滑块岩,滑积岩,重力滑塌岩 | ophiolite emplacement 蛇绿岩侵位 | ophiolite suite 蛇绿岩套

ophiolitic assemblage：蛇绿岩组合

ophiolite-radiolarite nappe 蛇绿岩-放射虫岩推覆体 | ophiolitic assemblage 蛇绿岩组合 | ophiolitiferous nappe 蛇绿岩质推覆体

ophiolitic suite：蛇绿岩组

"ophiolite","蛇绿火成岩类" | "ophiolitic suite","蛇绿岩组" | "ophite","闪化辉绿岩"

ophiolitic suite：蛇绿岩组,蛇绿岩系,蛇绿岩套

蛇绿岩系 ophiolite suite | 蛇绿岩组,蛇绿岩系,蛇绿岩套 ophiolitic suite | 纤闪辉绿岩 ophite

ophiolitic copper deposit：蛇绿岩铜矿

"蛇绿杂岩","ophiolitic complex" | "蛇绿岩铜矿","ophiolitic copper deposit" | "纤闪辉绿岩","ophite"