Experimental Studies of Melt-Solid Chemical Transport Mechanisms Beneath Mid-Ocean Ridges

[9415968]格罗夫实验旨在研究钛、铈、钇、钍和铀在辉石中的扩散，以了解大洋中脊下的熔融和熔体运输。这些信息可以用来解释在洋脊喷发的岩浆的成分。这将有助于更好地了解熔化的条件，以及熔化是在平衡条件下还是在不平衡条件下发生。实验将在活塞缸高压炉中进行，其压力和温度与上地幔的熔化有关。运行产物的分析将用离子探针完成。测量不同速率的元素的扩散速率也可以告诉我们一些关于熔化速率的信息。＊＊＊

9415968 Grove Experiments designed to examine the diffusion of Ti, Ce, Yb, Th, and U in pyroxene are planned to understand melting and melt transport beneath mid-ocean ridges. This information can be used to interpret the composition of magmas that erupt at ocean ridges. This will lead to a better understanding of the conditions of melting, and whether melting occurs under equilibrium or disequilibrium conditions. Experiments will be done in piston cylinder high-pressure furnaces at pressures and temperatures that are relevant to melting in the upper mantle. Analysis of run products will be done with the ion microprobe. The measurement of the diffusion rates of elements that may have different rates could also tell us something on the rate of melting. ***