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硅酸盐熔体的物理性质及其对地球深部状态和过程的启示

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硅酸盐熔体在地球形成和演化的各个阶段均扮演了至关重要的角色,是地球内部物质循环与能量传递的关键载体,具有非常活泼的物理化学性质.深入理解硅酸盐熔体在高温高压下的物理性质,对于准确诠释与熔融密切相关的地质过程与现象具有重要意义.近年来对硅酸盐熔体物理性质的研究取得了显著进展,通过结合模拟计算,不仅促进了我们对熔体基本物理性质的认知,还解析了熔体结构变化导致物理性质改变的机制;通过与地球物理观测及地球化学分析结合,极大地推动了对熔融在地球内部状态和过程中重要作用的理解.本文综述了熔体物理性质的特征,探讨了随温度、压力及成分变化的规律,分析了性质变化的潜在原因,总结了相关性质的定量模型,并阐释了一些具有重要意义的应用.
The physical properties of silicate melts and the implications for the status and processes in the Earth's interior
Silicate melts have played an important role in petrologic and geodynamic processes throughout Earth's history.They serve as the crucial medium for material cycling and energy transfer within the Earth and terrestrial planets.The physical properties of silicate melts are highly active.To accurately interpret geological processes and phenomena intimately related to melting,it is essential to have a profound understanding of the physical properties of silicate melts at high temperatures and pressures.In recent years,remarkable progress has been made in the research on the physical properties of silicate melts.Through the combination of simulation calculations,not only has our understanding of the physical properties of melts been promoted,but also the mechanism for the changes has been elucidated.This paper summarizes the characteristics of the physical properties of silicate melts,demonstrates the pattern of variations with temperature,pressure,and composition,and analyzes the potential causes of these property changes.Additionally,the quantitative models are summarized for future reference,and some significant applications are elucidated.

silicate meltphysical propertyvolatilequantitative modelprocesses in the Earth's interior

郭璇、张力、颜晗、倪怀玮

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中国科学技术大学岩石圈演化与环境演变全国重点实验室,合肥 230026

中国科学技术大学深空探测实验室/地球和空间科学学院,合肥 230026

硅酸盐熔体 物理性质 挥发分 定量模型 地球内部过程

2024

矿物岩石地球化学通报
中国矿物岩石地球化学学会 中国科学院地球化学研究所

矿物岩石地球化学通报

CSTPCD北大核心
影响因子:0.912
ISSN:1007-2802
年,卷(期):2024.43(6)