The Geochemistry of Mauna Loan Volcanism and Its ConjecturalRole in Kilauean Volcanism

该项目将继续对夏威夷岛上的毛纳贷款熔岩进行详细的地球化学和岩石学研究。之前的工作已经为毛纳罗亚的岩浆系统建立了一个全面的模型，表明它与邻近的基拉韦厄火山的岩浆系统明显不同。这个项目将在这项工作的基础上，测试这些想法，并通过对具体问题的研究进一步发展它们。这些将包括：a)对苦苦质熔岩和1859年的广泛流动进行详细的地球化学和矿物学研究，因为人们认为这些研究可能包含有关为火山提供母质岩浆性质的信息；B：研究熔岩成分的长期长期变化，重点是微量元素和同位素化学，以评估过去30,000年来源岩成分的可能变化；c)提供所有主要历史喷发的详细玻璃和矿物化学，将其与现有的地球化学数据结合起来，以检验和完善岩浆模型；D0通过对受地层控制的史前基拉韦河熔岩的地球化学分析，跟进最近的一项发现，该发现表明，先前相反的地球化学证据表明，莫纳罗亚和基拉韦厄火山可能神奇地相互关联。

This project will continue detailed geochemical and petrological studies of Mauna Loan lavas on the island of Hawaii. Previous work has produced a comprehensive model for Mauna Loa's magmatic system, showing that it is markedly different from that of neighboring Kilauea volcano. This project will build on that work, testing these ideas and developing them further through study of specific problems. These will include: a) detailed geochemical and mineralogical studies of picritic lavas and the extensive 1859 flow because it is thought these could contain information on the nature of the parental magmas that supply the volcano; b: study the long-term secular variation in lava composition, emphasizing trace element and isotopic chemistry in order to evaluate possible changes in source composition ov the last 30,000 years; c) provide detailed glass and mineral chemistry for all major historic eruptions, integrating this with exisiting geochemical data in order to test and refine the magmatic model; d0 through geochemical analysis of stratigraphically controlled prehistoric Kilauean lavas, follow up on a recent discovery which suggests that, previous geochemical evidence to the contrary, Mauna Loa and Kilauea may be magmatically interrelated.