Siderophile Elements and the Earth's Formation.
Siderophile Elements and the Earth's Formation.
复制标题
亲铁元素和地球的形成。
DOI：
10.1126/science.257.5074.1281
复制
发表时间：
1992
期刊：
影响因子：
56.9
通讯作者：
M. Drake
中科院分区：
文献类型：
--
作者：
J. Jones;C. Capobianco;M. Drake
对 Murthy（1991）关于地幔中丰富的亲铁元素的工作提出了两条评论。在第一个评论中，声称穆尔蒂外推的基础是分配反应的吉布斯自由能变化与温度无关的假设，并且由于这在热力学上通常不是有效的假设，并且与大多数实验数据相矛盾，因此地幔亲铁元素的问题仍未得到解决。在第二条评论中，断言穆尔蒂使用的外推法在热力学上似乎无效，并且基于普遍接受的热力学假设的外推法会产生不同的结果。穆尔蒂在回复中对这些评论提出了异议。
Two comments on a work by Murthy (1991) concerning the abundances of siderophile elements in the earth's mantle are presented. In the first comment it is asserted that the basis of Murthy's extrapolation is the assumption that the Gibbs free energy change for the partitioning reaction is independent of temperature, and as this is generally not a valid assumption thermodynamically, and as this is contradicted by most experimental data, the issue of mantle siderophile elements remains unresolved. In the second comment it is asserted that the extrapolation method used by Murthy does not appear to be valid thermodynamically, and that an extrapolation based on generally accepted thermodynamic assumptions yields different results. In a reply, Murthy takes issue with the comments.