Neotectonics and Geochemistry of Alkalic Volcanic Centers in the Tabar-to-Feni Island Chain: Participation in Project EDISON

OCE-9403773在这个项目中，PI将参加爱迪生邮轮(德国、加拿大、美国和澳大利亚的参与者；Crusie Ship-Sonne(德国))，以调查西南太平洋年轻碱性火山中心的结构、岩石学和构造。这项研究的一个耐人寻味的方面是在一些碱性玄武岩中存在地幔楔形包体。这些包体为富含硫酸盐和碳酸盐(交代)的包体。另一个耐人寻味的方面是1982年在利希尔岛发现的一个金矿。作者认为，这可能是世界上最著名的研究会聚边缘伸展构造、弧形岩浆作用、地幔交代作用和金铜矿作用之间相互关系的地方。这就是团队要做的事情。在海上的航行时间和其他费用将由德国人承担；私人投资公司只要求提供巡航前费用和巡航后研究的资金。

OCE-9403773 Perfit In this project the PIs will participate in the EDISON cruise (Germany, Canada, US, and Australian participants; Crusie ship- Sonne (German) to investigate structure, petrology, tectonics of the young alkaline volcanic centers (TLTF) in the southwestern Pacific. An intriguing aspect of this study is the presence of mantle wedge xenoliths in some of the alkaline basalts. These xenoliths are sulfate and carbonate-rich (metasomatized). Another intriguing aspect is the 1982 discovery of a gold deposit in Lihir island. The authors argue that "this is probably the best known locality in the world" in which to investigate the interrelation- ship between extensional tectonics in a convergent margin, arc magmatism, mantle metasomatism, and gold-copper mineralization. This is what the team will do. Ship time and other expenses at sea will be borne by the Germans; the PIs are only requesting funds for pre-cruise expenses and post-cruise research.