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岩浆粘度
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  “岩浆粘度”译为未确定词的双语例句
     The effusive physical characters such as the mean magma effusive rate, the speed of the lava flows, the durable time of the effusion etc are also reconstructed and the relative importance of the factors controlling the lava flow lengths of this area is lava flow volume>average eruptive rate>lava viscosity>average gradient of the surface.
     文中还恢复出岩浆平均溢出率、熔岩流动速度、持续喷发时间等有关溢流式喷发的物理参数。 研究表明本地区控制熔岩流长度的各因素的相对重要性为熔岩流体积>岩浆平均溢出率>岩浆粘度>地表平均坡度。
短句来源
     The degree of gravitational segregation depends on viscosity(η)and yield strength(σ0) of magma, as well as density difference ( △p ) between the crystal and melt, and crystal size.
     本文导出的晶体沉降速率的表达式说明,晶体能否重力分离,不仅与晶体和流体相间的密度差及晶体大小有关,还与岩浆粘度、屈服强度有关,而岩浆的流变学性质又受岩浆成分、晶体含量和物化条件等的控制。 因而,深度、地温、构造环境和岩浆上升速度等对结晶分异作用都有影响。
短句来源
     This papor deals with melting molting temperature and the mamgma viscosity as well as thei relation to the composition of the Mesozoic volcanic-lntrusive complexes in the coastal area of southeastern Zhejiang Province, The relevant petrological significance is discussed.
     本文研究了浙东南沿海地区中生代火山一侵入杂岩的熔融温度,岩浆粘度及其与岩石成分之间的关系,讨论了它们的岩石学意义。
短句来源
     Through calculation on viscosity and density of magma, fractionation velocity of immiscible magma and the uprise velocity of magma alone crack, this paper has proved the condition of fluid kinetic of immiscibility occurring at the second stage magma of Huangshan Complex and deduced that there is a proximate grade chamber to be considered to provide a steady space for immiscible frationation of magma.
     本文通过岩浆粘度、密度、不混溶分离速度及岩浆沿裂隙上升速度等的计算,论证了黄山杂岩体第二侵入期岩浆发生液态不混溶的流体动力学条件,从而推断存在一个次级岩浆房,并认为这个次级岩浆房为液态不混溶分离提供了稳定空间。
短句来源
     The higher F and H 2O contents might decrease viscosity of magma and increase the growth rate of quartz. Consequently, the albite might be wrapped by quartz phenocrysts and finally the snowball texture formed.
     较高的F和H2 O含量使岩浆粘度降低 ,石英的生长速率相对加快并逐渐包裹钠长石形成雪球结构。
短句来源
  相似匹配句对
     (4) Carbonatitic magma has low viscosity and density, which enables its easy propagation at shallow crustal levels through fissures and veins.
     (4 )碳酸岩岩浆具有的较低的粘度和密度。
短句来源
     Ore-forming magma is characterized by low density, low viscosity and high volatile content.
     成矿岩浆具低密度、低粘度、富含挥发份的特征;
短句来源
     its specific viscosity is 16;
     特性粘度为 16 ;
短句来源
     SYNERGISM OF VISCOSITY IN COMPONENT SYSTEMS
     粘度的协同效应
短句来源
     MAGMATIC THERMO-METAMORPHISM OF COAL
     煤的岩浆热变质作用
短句来源
查询“岩浆粘度”译词为用户自定义的双语例句

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  magmatic viscosity
During a basaltic fissure eruption heat transfer from the hot magma to the surrounding rock causes a dramatic increase in the magmatic viscosity and solidification at the margins.
      


There occurs a late Hercynian quasi-equiaxial thinlayered polycyclic lopolithin the intersection site of two sets of fractures on the margin of the western sec-tor of the Yanshanian subsidence belt. A magmatic magnetite-apatite deposit occu-rs in the middle and upper parts of the lopolith. The entire lopolith is composedof rocks of more than four cycles, each of which consists from the base upwards ofpyroxenite→biotite pyroxenite→apatite rocks→magnetite-apatite rocks→cloud-sha-ped pyroxene-bearing syenite. According...

There occurs a late Hercynian quasi-equiaxial thinlayered polycyclic lopolithin the intersection site of two sets of fractures on the margin of the western sec-tor of the Yanshanian subsidence belt. A magmatic magnetite-apatite deposit occu-rs in the middle and upper parts of the lopolith. The entire lopolith is composedof rocks of more than four cycles, each of which consists from the base upwards ofpyroxenite→biotite pyroxenite→apatite rocks→magnetite-apatite rocks→cloud-sha-ped pyroxene-bearing syenite. According to the textures and structures, petrochemical composition and REEpatterns of the rocks and variation of the magma viscosity of each cycle, calcula-tion of the oxygen isotope composition of pyroxene-magnetite and some typomor-phic characteristics of different minerals, it is considered that the structural typeis not formed by metasomatism or multiple magmatic intrusions but by a singleemplacement into dolomitic limestone. As the diffusion heat and mineral formationheat reach a balance during the cooling process of magmas, a magmatic crystalli-zation region is formed from below upwards and from above downwards. Accordingto Rosenbusch's law and Bowen's reaction series, the crystallization of silicate min-erals from inosilicates (salite) →phyllosilicatcs (biotite) →tectosilicates (orthoc-lase) results in a thin-layered polycyclic structure. After the formation of the above-mentioned structural type, the magmatic wi-thdrawal in the magma vent leads to the subsidence of the cyclic structure, thusforming the lopolith.

河北矾山铁磷矿床的薄层多旋回岩盆岩体由四个以上的旋回组成。较完整的旋回自下而上为:辉石岩→黑云母辉石岩→磷灰石岩→磁铁磷灰石岩→云朵状含辉石正长岩。根据岩石的结构构造和化学成分,岩浆粘度变化及矿物标型特征等分析,这种构造类型的形成是岩浆一次呈层状侵入,在岩浆冷却过程中,扩散热与矿物生成热达到平衡形成岩浆结晶区,这种岩浆结晶区按罗森布什规律与鲍恩反应序列晶出成上述旋回。薄层状多旋回构造形成后,由于岩浆管道中岩浆冷却收缩下降,导致旋回构造相应下沉而形成岩盆。

The rhyolitic magma includes two immiscible melts, of which one is more enriched in SiO_2 and depleted in FeO. By contrary, the other is enriched in FeO and depleted in SiO_2. In the view of the melt structure, the former is enricheh in bridging oxygen, and the later—in free oxygen. The depolymerization of water may lead to changing the melt structure of rhyolitic magma, i. e. lowering its polymerizing degree. Therfore, the viscosity of water-bearing rhyolitic magma is lawer than that of basalt magma and thus...

The rhyolitic magma includes two immiscible melts, of which one is more enriched in SiO_2 and depleted in FeO. By contrary, the other is enriched in FeO and depleted in SiO_2. In the view of the melt structure, the former is enricheh in bridging oxygen, and the later—in free oxygen. The depolymerization of water may lead to changing the melt structure of rhyolitic magma, i. e. lowering its polymerizing degree. Therfore, the viscosity of water-bearing rhyolitic magma is lawer than that of basalt magma and thus the flow structure is generally well developed in the rhyolite. So that it should avoide mixing the difference between rhyolites and acidic ignimbrite on research work.

在流纹质岩浆中,存在两种不混溶的熔体,一种熔体富SiO_2贫FeO,另一种则相反。从熔体结构的角度看,前一种熔体富桥氧,后者则富自由氧。水的解聚作用可以改变流纹质岩浆的结构,即降低它的聚合程度,因此,含水流纹岩浆的粘度低于玄武岩浆的粘度,从而使流纹岩中流纹构造发育。 实际工作中应避免混淆流纹岩与酸性熔结凝灰岩。

In the study of igneous petrology, the crystallization differentiation is usually proposed, only based on the chemical variation of rock suite, and its primary mechanism is regarded as gravitational segregation of crystals in the Newtonian fluid. However, magma is a non-Newtonian fluid in most instances. The degree of gravitational segregation depends on viscosity(η)and yield strength(σ0) of magma, as well as density difference ( △p ) between the crystal and melt, and crystal size.

火成岩石学研究中,通常仅根据岩套的化学变异来推断是否发生过结晶分异作用,而且认为结晶分异的主要机理是晶体在牛顿流体中的重力分离。然而,在大多数情况下,岩浆是一种非牛顿流体。本文导出的晶体沉降速率的表达式说明,晶体能否重力分离,不仅与晶体和流体相间的密度差及晶体大小有关,还与岩浆粘度、屈服强度有关,而岩浆的流变学性质又受岩浆成分、晶体含量和物化条件等的控制。因而,深度、地温、构造环境和岩浆上升速度等对结晶分异作用都有影响。文中导出的宾汉体岩浆中包体沉降速度的表达式,普遍适用于含深源包体的岩浆的最小上升速度的计算。本文还评述了结晶分异作用微量元素模型在应用上的动力学限制条件。

 
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