Science. 1994 Jun 3;264(5164):1442-5. doi: 10.1126/science.264.5164.1442.
The abundances of siderophile elements in the Earth's silicate mantle are too high for the mantle to have been in equilibrium with iron in the core if equilibrium occurred at low pressures and temperatures. It has been proposed that this problem may be solved if equilibrium occurred at high pressures and temperatures. Experimental determination of the distribution of siderophile elements between liquid metal and liquid silicate at 100 kilobar and 2000 degrees C demonstrates that it is unlikely that siderophile element abundances were established by simple metal-silicate equilibrium, which indicates that the segregation of the core from the mantle was a complex process.
如果在低压和低温下达到平衡，地幔中亲铁元素的丰度对于与地核中的铁达到平衡来说太高了。如果在高压和高温下达到平衡，则可以解决这个问题。在 1000 千巴和 2000 摄氏度的温度下，实验确定了亲铁元素在液态金属和液态硅酸盐之间的分布，这表明亲铁元素的丰度不太可能通过简单的金属-硅酸盐平衡来建立，这表明核心与地幔的分离是一个复杂的过程。
