Elemental and isotopic interactions within the deepest parts of the oceanic crust- Atlantis Massif (IODP Expedition 399)

这个项目是一个令人兴奋的机会，可以参加一个重要的、得到良好支持的、非常成功的国际科学计划——国际海洋发现计划（IODP）。学生将深入了解海底岩浆，构造和就位后的海水-岩石相互作用过程。该项目将侧重于从亚特兰蒂斯地块（即大西洋中脊附近）回收的新钻芯样品的岩石学和地球化学（在缓慢扩张环境下钻探的最深海洋地壳样品）。我们设想使用经典岩石学，矿物和岩石微量元素化学，最先进的全岩硼和锶同位素测量。这项工作的目的是更好地理解仍然是谜的挥发性物质和流体渗透（在洋中脊）以及它们随后在俯冲带的释放（在火山锋）。这名学生将成为一个由20多名科学家组成的团队的一员，他们的工作是研究从IODP第399次探险中回收的岩石。将有机会参观不莱梅的IODP储存库进行样品选择，在利兹的世界级分析设施和/或比萨的CNR-IGG实验室进行培训和测量，以及在国际会议上展示结果。我们还设想在巴尔干和Troodos蛇绿岩块的实地工作作为项目的组成部分，在那里可能会发现海洋地壳的类似物。

This project is an exciting opportunity to take part in a major, well-supported and highly successful international science program- the International Ocean Discovery Program (IODP). The student will gain deep understanding of ocean floor magmatic, tectonic and post-emplacement seawater-rock interaction processes. The project will focus on the petrology and geochemistry of new drill core samples recovered from the Atlantis Massif i.e. near the Mid Atlantic Ridge (deepest oceanic crust samples ever drilled at slow spreading setting). We envision the use of classical petrography, mineral and rock trace element chemistry, with state-of-the-art whole rock boron and strontium isotope measurements. The work will aim to better understand the still enigmatic volatile and fluid infiltration (at mid ocean ridges) and their subsequent release (at volcanic fronts) across subduction zones. The student will be part of a team of > 20 scientists working on rocks recovered from IODP Expedition 399.There will be opportunity to visit IODP repository in Bremen for sample selection, be trained and perform measurements at the world-class analytical facilities in Leeds and/or CNR-IGG Labs in Pisa, as well as to present results at an international conferences. We also envision fieldwork in the Balkan and Troodos ophiolite massifs as integral part of the project, where possible oceanic crustal analogues may be discovered.