Geochemical Variability of Near-Ridge and Intraplate Hotspot Volcanism

热点地区玄武岩的同位素和微量元素特征是理解地幔羽流现象的关键。地幔柱被认为在地球上创造了热点，随后的火山活动形成了许多海山链。在这个奖项中，首席研究员将分析来自Cobb- Eickelberg海山链的岩石，这是近山脊热点活动的产物，以及来自马克萨斯群岛的岩石，这些岩石是由板块内热点活动形成的。这两个地方的地质环境不同。目的是确定热点结构，非均质性和岩石圈同化的程度在这些地点的熔体产生。这项研究将有助于我们了解热点地区的地幔地球化学。邓肯博士是一位优秀的研究人员，有着良好的记录，在这个项目中成功的机会非常高。

Isotopic and trace element signatures in basaltic rocks from hotspot areas hold the key to the understanding of an important phenomenon, that is plume in the mantle. Mantle plums are believed to have created hot spots on the globe and with subsequent volcanism formed many sea mount chains. In this award, the principal investigator will analyze rocks from Cobb- Eickelberg seamount chain which is a product of near ridge hot spot activity and rocks from Marquesas islands formed by intraplate hot spot activity. These two localities are differnt in their geologic settings. the objective is to determine the hot spot structures, heterogeneity and the extent of lithospheric assimilation during melt production at these locations. This research will help us to understand mantle geochemistry at hot spot areas. Dr. Duncan is an excellent researcher with an established track record and the chance of success in this project is very high.