The speciation, distribution, transport, and impact of volatile elements in the Earth's interior
The speciation, distribution, transport, and impact of volatile elements in the Earth's interior
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地球内部挥发性元素的形态、分布、运输和影响
DOI：
10.1016/j.chemgeo.2018.01.007
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发表时间：
2018
期刊：
影响因子：
3.9
通讯作者：
Ni H
中科院分区：
文献类型：
--
作者：
Ni H
相对于共存矿物，挥发性元素倾向于分配到流体或熔体中。主要的挥发性元素（如氢和碳）可以有明显的岩石学和地球物理学的影响不成比例的丰度，而次要的挥发性元素（如卤素和惰性气体）可以作为有价值的地球化学示踪剂。挥发性元素，其中一些具有多种价态，以各种形式存在，并在地球内部分布不均匀。在地球内部的动力学过程中，挥发性元素通过俯冲、挥发分释放、熔融和火山喷发等物理和化学过程进行迁移，挥发性元素的储存和迁移会对地球内部的相关系（亚固相线和熔融相）、地球物理性质（机械强度、地震速度、电导率等）产生显著的影响。和地球化学行为（微量元素分配、同位素分馏、反应动力学等）地球深处因此，挥发性元素强烈影响地幔对流和板块构造，水圈和大气的形成，以及矿产和能源的成因。关于挥发性元素的形态、分布、迁移和影响的知识为了解地球内部的物理化学条件和过程以及地球作为可居住行星的演变提供了重要线索。
Volatile elements tend to partition into fluids or melts relative to coexisting minerals. The major volatile elements (eg, hydrogen and carbon) can have appreciable petrological and geophysical influence disproportionate to their abundance, while the minor volatile elements (eg, halogens and noble gases) can act as valuable geochemical tracers. Volatile elements, some of which have multiple valence states, are present in variable forms and are distributed unevenly inside the Earth. In the dynamic interior of the Earth, volatile elements are transported through a variety of physical and chemical processes including subduction, devolatilisation, melting and volcanic eruption.The storage and transport of volatiles can have marked effects on the phase relations (both sub-solidus and at melting), geophysical properties (mechanical strength, seismic velocity, electrical conductivity, etc.) and geochemical behavior (trace element partitioning, isotope fractionation, reaction kinetics, etc.) of the deep Earth. In consequence, volatile elements strongly influence mantle convection and plate tectonics, the formation of the hydrosphere and the atmosphere, and the genesis of mineral and energy resources. Knowledge about the speciation, distribution, transport and effects of volatile elements provides critical clues for understanding the physicochemical conditions and processes in the Earth’s interior and the evolution of the Earth as a habitable planet.