Influence of regional tectonics on the genesis and extrusion of volcanic rocks in orogenic belts

这项研究将调查为什么现代和古代火山位于沿着断层，以及岩浆的成分是如何改变的，因为它流过断层，这提供了岩浆流经地壳的通道。该项目的第一部分使用爱琴海的火山中心在过去的2500万年来分析岩浆演化的变化：这一地区被选中，因为在地幔中的个别岩浆源上方发生的断层类型的快速变化。此外，从以前的工作，年代学和地球化学的熔岩很好地理解。工作的第二部分试图将地幔地震层析成像的新发现与火山活动的大规模模式联系起来。这项工作的结果，然后在第3部分中应用到更困难的岩石的老阿巴拉契亚山脉带，了解古老的火山是如何形成的，反过来说，什么是断层的模式，在他们形成的时候。这项研究旨在将地球上两个最重要的地质过程联系起来：火山作用和断层作用。它在许多矿产资源勘探和火山危险性评估中有实际应用。

This study will investigate why modern and ancient volcanoes are located along faults and how the composition of magma is changed as it flows through the faults, which provide pathways for magma to flow through the Earth's crust. Part 1 of the project uses the volcanic centres of the Aegean Sea over the past 25 million years to analyse the variability of magma evolution: this region is chosen because of the rapid changes in style of faulting that have taken place above individual magma sources in the mantle. Furthermore, chronology and geochemistry of the lavas are well understood from previous work. Part 2 of the work attempts to relate new findings from seismic tomography of the mantle to large-scale patterns of volcanism. Results from this work are then applied in Part 3 to the much more difficult rocks of the old Appalachian mountain belt, to understand how old volcanoes formed and conversely what were the patterns of faulting at the time that they formed. This research aims to relate two of the most important geological processes on the planet: volcanism and faulting. It has practical applications to the exploration for many mineral resources and to the assessment of volcanic risk.