• If it is true, the mantle rocks of the Moon and the Earth should be the same geochemically.

    如果真的月球地球地幔岩石从地球化学上来看应该相同

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  • More and more of this plate, the ocean floor, would go down under the continent into the mantle.

    越来越这种板块海床,大陆下方进入地幔。

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  • As we've discussed, Earth's crust is made up of large plates that rest on a mantle of molten rock.

    正如我们讨论地壳位于熔融岩石的地幔大型板块构成。

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  • Moreover, the Moon's composition, though similar to that of Earth's mantle, is not a precise match.

    此外月球成分虽然地球地幔相似,但并不完全吻合。

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  • Much more than the crust, the mantle contains information about a planet's or moon's total composition.

    地幔包含远远不仅是地壳,还有关于行星卫星总体构成信息

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  • The Moon's mean density is much lower than that of Earth but is about the same as that of Earth's mantle.

    月球平均密度地球得多,与地球的地幔密度大致相同

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  • As the ocean floor plate begins to sink down into the mantle, it would drag or pull the entire plate along with it.

    海洋底部开始下沉地幔中,同时将整个海底板块拽下去。

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  • Since the early twentieth century, geophysicists have understood that the mantle churns and roils like a thick soup.

    二十世纪以来,地球物理学家已经了解地幔一样搅动翻滚

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  • The implication is that the gases in the mantle came not from the sun but from the early accretion of rocky material.

    意味着地幔中的气体不是来自太阳而是来自岩石物质早期积累

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  • In this case, we especially want to know if any of the mantle, the layer beneath the crust, was exposed by the impact.

    这种情况下我们特别知道存在于地壳下层地幔是否会因为撞击暴露出来。

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  • Not everyone agrees, but some experts are convinced that whatever created the SPA Basin did penetrate the Moon's mantle.

    并不是每个人都同意这个观点一些专家相信无论塑造SPA盆地什么,它确实穿透月球地幔

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  • Because of its proximity to Earth's core, the rock at the base of the mantle is much hotter than rock in the upper mantle.

    由于靠近地核地幔底部的岩石地幔岩石温度得多

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  • All are slowly moving because the plates float on a denser sem-iliquid mantle, the layer between the crust and Earth's core.

    所有板块都在缓慢移动因为它们漂浮密度更大的半流体地幔上,也就是地壳地核之间一层

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  • All are slowly moving because the plates float on a denser semi-liquid mantle, the layer between the crust and Earth's core.

    所有板块都在缓慢移动因为它们漂浮密度更大半液态地幔上,也就是地壳地核之间一层

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  • The oceanic plate is made of denser and heavier rock, so it begins to sink down under the continental plate and into the mantle.

    海洋板块密度更大更重岩石构成的,所以开始下沉大陆板块之下,到地幔之中。

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  • Another possibility is that the sinking plate cools the neighboring mantle and produces convection currents that move the plates.

    另一种可能下沉板块冷却邻近地幔产生对流,使板块移动。

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  • The descending rock is substantially cooler than the surrounding mantle and hence is less ductile and much more liable to fracture.

    下降岩石周围地幔温度低很多,因此延展性较小容易断裂。

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  • The "mantle plume" thus formed, once established, continues to channel hot material from the mantle base until the reservoir is emptied.

    这样形成地幔一旦形成,就会继续地幔底部引导物质直到层被排空。

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  • It seems possible that a sinking current of cooled mantle material on the upper side of the plate might be the cause of such deep basins.

    看来板块上侧冷却地幔物质下沉可能造成这种盆地的原因。

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  • In a titanic collision model, the bulk of the Moon would have formed from a combination of material from the impactor and Earth's mantle.

    泰坦尼克碰撞模型中,月球大部分是由来自撞击者地幔物质结合形成的。

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  • Plate movements are the surface expressions of motions in the mantle—the thick shell of rock that lies between Earth's crust and its metallic core.

    板块运动地幔运动表面现象。地幔是位于地壳金属内核之间的一层厚厚的岩石壳。

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  • An alternative theory is that the sinking part of the plate, which is denser than the hotter surrounding mantle, pulls the rest of the plate after it.

    理论板块下沉部分密度大于周围较热地幔,将板块的其余部分在后面。

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  • Although the hot rock of the mantle is a solid, under the tremendous pressure of the crust and overlying rock of the mantle, it flows like a viscous liquid.

    虽然地幔岩石固体,但在地壳地幔上覆岩石巨大压力粘性液体一样流动

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  • Most volcanoes that occur in the interiors of plates are believed to be produced by mantle plumes, columns of molten rock that rise from deep within the mantle.

    人们认为大多数发生板块内部火山爆发地幔造成的,地幔是指地幔深处涌出熔岩柱体。

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  • The formation of Earth's crust protected the inner layers of Earth from the high-energy particles in space, reducing the temperatures of the mantle and the core.

    地壳形成保护地球内层不受太空高能粒子影响,降低地幔地核温度

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  • The plumes apparently originate at great depths, perhaps as deep as the boundary between the core and the mantle, and many have been active for a very long time.

    这些地幔显然起源于很深的地方,可能深至地核地幔之间边界而且许多已经活跃时间

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  • By compiling a map of seismic velocities from thousands of earthquakes across the globe, they can also begin to map temperatures and densities throughout the mantle.

    通过编制全球数千地震地震速度他们可以开始绘制地幔的温度密度图。

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  • The explanation may be in Earth's mantle, the layer of rock underlying the tectonic plates and extending down over 1,800 miles to the outer edge of Earth's iron core.

    解释可能地球地幔中是在构造板块下面岩石层向下延伸超过1800英里地球铁芯边缘

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  • The mantle's motions, analogous to those in a pot of boiling water, cool the mantle by carrying hot material to the surface and returning cooler material to the depths.

    地幔运动类似于沸水运动,它物质带到表面把较的物质带到深处,从而使地幔冷却

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  • The mantle's motions, analogous to those in a pot of boiling water, cool the mantle by carrying hot material to the surface and returning cooler material to the depths.

    地幔运动类似于沸水运动,它物质带到表面把较的物质带到深处,从而使地幔冷却

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