Fundamental Magmatic Processes of the McMurdo Dry Valleys

这项工作将探索控制大多数行星岩浆系统岩浆过程的一阶原理，特别是物理和化学过程的空间相互依赖性。这些基本原理对于行星分异、海底玄武岩和大陆花岗岩的双峰性、玄武岩岩体的模态分层以及火成岩的多样性都是必不可少的。这项研究将使用来自麦克默多干谷费拉尔岩浆系统的样本进行。pi的目标是：1)完成整个干谷的1:10万地质图，详细追踪所有技能的范围和相互作用，以帮助理解整个系统记录的岩浆过程；2)完成分析，确定了新发现的一种Opx-Tongue在penplain岩床的范围，并在两个岩床上建立了指纹；3)动态模拟类似于Dais层状侵入体的块状浆料的粒状物质的分选和自组织动力学。这项工作高度整合了现场、理论和实验方法，揭示并有助于解决长期存在的岩浆运输、凝固和分化问题。更广泛的影响：该项目以前的工作对南极地球科学产生了广泛的科学影响。他的工作成果已被用于设计博物馆展品，了解矿石沉积，并了解岩浆危害的缓解。研究生和本科生都将在本研究的过程中接受训练。

This work will explore first order principles governing magmatic processes for most planetary magmatic systems, particularly the spatial interdependence of physical and chemical processes. These basic principles are essential to planetary differentiation, the bimodality of sea floor basalt and continental granitics, modal layering in basaltic plutons, and the diversity of igneous rocks. This research will be conducted using samples from the Ferrar Magmatic System of the McMurdo Dry Valleys. The PIs seek to: 1) Complete a 1:100,000 geologic map of the entire Dry Valleys that traces in detail the extent and interactions of all the sills to help understand magmatic processes recorded by the entire system; 2) Complete analyses to establish the extent of a newly discovered Opx-Tongue in the Peneplain sill and fingerprint the two upper sills; 3) Simulate the dynamics of sorting and self-organization of granular materials dynamically similar to the massive slurries of the Dais Layered Intrusion. This work is highly integrated in its use of field, theoretical, and experimental methods to reveal and contribute to solving long-standing problems in magma transport, solidification, and differentiation. Broader impacts: Previous work by this PI has had broad scientific impacts on Antarctic Earth Sciences. The results of his work have been used to design museum exhibits, to understand ore deposition, and to understand the mitigation of magmatic hazards. Both graduate and undergraduate students will be trained in the course of this research.