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在现在的表层热流模型中,有重要地球动力学意义的热异常并不总是可以认识的。假象的出现是因为表层热流响应地幔热、地壳放射性、岩浆作用、地壳变形、埋藏和/或剥露以及流体运动,其中任何一种都可能抵销其它的热效应。沉积盆地特别适合于将热流分成不同的组分。以新西兰 Taranaki 盆地为例。与构造活动的东部正好相反,该盆地西部的变形相对较弱(从中新世以来)。虽然穿过 Taranaki 盆地的表层热流值大致一致,但下地壳—上地幔模拟的基底受两个或更多因素中的某个因素的影响而变化。低热产量地壳结合东部地壳加厚产生的热沉降效应能解释基底热流异常。如果没有详细的盆地分析和热模拟的帮助,构造热异常就会被忽视。
In the current surface heat flow model, thermal anomalies of important geodynamic significance are not always recognized. The appearance of artifacts is due to surface heat fluxes that respond to mantle heat, crustal radioactivity, magmatic activity, crustal deformation, burial and / or delamination, and fluid motion, all of which may offset other thermal effects. Sedimentary basins are particularly suitable for separating heat fluxes into different components. Taking Taranaki Basin in New Zealand for Example. In contrast to the tectonic eastern part, the deformation in the western part of the basin is relatively weak (since the Miocene). Although the surface heat flux across the Taranaki Basin is roughly the same, the underlying basement simulated by the lower crust-upper mantle varies under the influence of one of two or more factors. The heat-sinking effect caused by the combination of low-heat production crust and thickening of the eastern crust can explain the anomalous base-heat flow. Without detailed basin analysis and thermal modeling assistance, thermal anomalies are ignored.