Detailed Study Of Focused Melt Transport In The Upper Mantle Section Of The Oman Ophiolite

这是一个建议，继续工作的地幔部分的阿曼蛇绿岩的PI和博士生，其工资是主要项目要求在这个建议。 该研究的重点是纯橄榄岩脉的研究，学生（迈克尔·布劳恩）将测量它们的大小，分布，丰度，微观结构，以及在实验室中，它们的成分。 其目的是提供定量的约束MORB岩浆是如何从地幔中提取的，反应性的多孔流动在熔体迁移通过地幔的流体动力学，以及这些过程如何影响地幔流变学。 具体来说，这些新的研究将探讨有多少熔体流过哈兹伯拉，因为他们在纯橄榄岩通道。 主要的想法是测试两种可能的纯橄榄岩的起源;裂纹周围的反应晕与扩散渗透。 这项工作补充了阿曼下地壳剖面研究所的研究，并可用于研究洋壳的起源。

This is a proposal for continued work on the mantle section of the Oman ophiolite by the PIs and a PhD student whose salary is the major item requested in this proposal. The study is focused on the study of dunite veins and the student (Michael Braun) will measure their size, distribution, abundance, microstructures, and, in the lab, their compositions. The aim is to provide quantitative constrains on how MORB magma is extracted from the mantle, the fluid dynamics of reactive porous flow during melt migration through the mantle, and how these processes affect mantle rheology. Specifically, these new studies will approach the question of how much melt has flowed through harzburgite as they travel in dunite channels. The main idea is to test between two possible origins of the dunites; reaction haloes around cracks vs. diffusive infiltration. This work complements studies by the PIs of the lower crust sections in Oman and has application for studies of the origin of ocean crust.