Caveats and challenges in geospeedometry: A reply to Faak et al.'s critique of the Mg-REE coupled geospeedometry
Caveats and challenges in geospeedometry: A reply to Faak et al.'s critique of the Mg-REE coupled geospeedometry
复制标题
地球速度测量的注意事项和挑战：对 Faak 等人对 Mg-REE 耦合地球速度测量的批评的答复
DOI：
10.1016/j.epsl.2018.08.044
复制
发表时间：
2018
影响因子：
5.3
通讯作者：
Sun C
中科院分区：
文献类型：
--
作者：
Sun C
Faak等人的评论说明质疑了新的Mg-REE耦合地质速度测量法及其在Sun和Lissenberg最近的论文中对Hess Deep辉长岩的应用（2018;表示为S&L）。Faak等人将S&L的方法描述为“有缺陷”，错误地断言S&L关于快速扩张的下洋壳的快速热液冷却的结果是“不正确的”。相反，他们声称Faak等人（2015）中使用的斜长石中镁地质速度测量法显示出“良好的精确度和准确度”，这产生了与传导冷却一致的较慢的冷却速率。我们强烈反对Faak等人的观点。的主张，但感谢这里的机会，使我们能够进一步阐述S&L的做法更详细。在这个答复中，我们表明，Faak等人的错误主张来自于他们对多矿物系统的交换温度计校准和体扩散模型的geoseedometry的误解。
The commentary note from Faak et al. questioned the new Mg–REE coupled geospeedometry and its application to Hess Deep gabbros in the recent paper of Sun and Lissenberg (2018; denoted as S&L). Characterizing S&L's approach as “flawed”, Faak et al. mistakenly asserted that S&L's results regarding rapid hydrothermal cooling of the fast-spreading lower oceanic crust were “incorrect”. Instead, they claimed that the Mg-in-plagioclase geospeedometry used in Faak et al. (2015) showed “good precision as well as accuracy”, which produced slower cooling rates consistent with conductive cooling. We strongly disagree with Faak et al.'s claims but appreciate the opportunity here allowing us to further elaborate S&L's approach in greater detail. In this reply, we show that the erroneous claims of Faak et al. are derived from their misunderstandings on geospeedometry regarding the calibration of exchange thermometers and bulk-diffusion modeling for multi-mineral systems.