We investigate orogenic uplift rates and the thermal structure of the crust in the hanging wall of the Alpine Fault, New Zealand, using the hypocenters of 7,719 earthquakes that occurred in the central Southern Alps between late 2008 and early 2017, and previously published thermochronological data. We assume that the base of the seismogenic zone corresponds to a brittle‐ductile transition at some fixed temperature, which we estimate by fitting the combined thermochronological data and distribution of seismicity using a multi‐1‐D approach. We find that exhumation rates vary from 1 to 8 mm/yr, with maximum values observed in the area of highest topography near Aoraki/Mount Cook, a finding consistent with previous geologic and geodetic analyses. We estimate the temperature of the brittle‐ductile transition beneath the Southern Alps to be 410–430°C, which is higher than expected for Alpine Fault rocks whose bulk lithology is likely dominated by quartz. The high estimated temperatures at the base of the seismogenic zone likely reflect the unmodeled effects of high fluid pressures or strain rates.

中文翻译：

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新西兰中部高山断裂带附近南阿尔卑斯山的地壳热结构和发掘速率

我们使用在2008年底至2017年初之间在南阿尔卑斯山中部发生的7,719地震的震中和先前公布的热年代学数据，调查了新西兰阿尔卑斯山断层的垂悬壁上的造山运动速率和地壳的热结构。我们假设在一定的温度下，地震发生带的基底对应于脆性-韧性转变，我们可以通过使用多一维方法拟合组合的热年代学数据和地震分布来进行估算。我们发现挖掘出土的速率从1毫米/年至8毫米/年不等，在Aoraki /库克山附近最高地形的区域中观察到最大值，这一发现与先前的地质和大地测量分析一致。我们估计南阿尔卑斯山下的脆性-韧性转变温度为410-430°C，高于预期的散布岩性可能主要为石英的阿尔卑斯断层岩。地震发生区底部的高估计温度可能反映了高流体压力或应变率的无模型影响。