论文标题
熔体传输期间的热不平衡：对岩石圈 - 苯圈边界演变的影响
Thermal disequilibrium during melt-transport: Implications for the evolution of the lithosphere-asthenosphere boundary
论文作者
论文摘要
这项研究探讨了在熔融浸润过程中的热不平衡和熔体相互作用如何从下面改变大陆岩石圈。使用理想化的1D模型在富含熔体的通道和周围的熔体底物材料之间的热不平衡，我在岩石圈 - 亚省边界（LAB）的通道熔体传输过程中估计跨通道壁上的热量交换。对于频道的数量比例（$ ϕ $），通道墙（$ v $）的相对速度，通道间距（$ D $）以及情节性融化输入（$τ$）的时间表的相对速度（$ v $）的相对速度（$ v $）），模型结果表明，无效的供暖可能会贡献$> $ 10^$ jupter，在偶发性熔体渗透期间，在实验室中，与时空变化的不平衡热交换形式相关的热返工区（TRZ）。 TRZ通过在材料依赖性速度处的不平衡加热前端的瞬时迁移而生长，达到最大稳态宽度$Δ\ sim $ $ \ left [ϕvd^{ - 2}τ^{2}τ{2} \ right] $。与建立TRZ相关的时空量表与基于大陆板内环境中的地质观察（例如美国西部）内的地质观测值推断的实验室迁移相当。
This study explores how thermal disequilibrium during melt-infiltration and melt-rock interaction may modify the continental lithosphere from beneath. Using an idealized 1D model of thermal disequilibrium between melt-rich channels and the surrounding melt-poor material, I estimate heat exchange across channel walls during channelized melt transport at the lithosphere-asthenosphere boundary (LAB). For geologically-reasonable values of the volume fraction of channels ($ϕ$), relative velocity across channel walls ($v$), channel spacing ($d$), and the timescale of episodic melt-infiltration ($τ$), model results suggest disequilibrium heating may contribute $>$ $10^{-3}$ W/m$^3$ to the LAB heat budget. During episodic melt-infiltration, a thermal reworking zone (TRZ) associated with spatio-temporally varying disequilibrium heat exchange forms at the LAB. The TRZ grows by the transient migration of a disequilibrium-heating front at material-dependent velocity, reaching a maximum steady-state width $δ\sim$ $\left[ϕvd^{-2}τ^{2} \right]$. The spatio-temporal scales associated with establishment of the TRZ are comparable with those inferred for the migration of the LAB based on geologic observations within continental intra-plate settings, such as the western US.
