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

塔巴尔至费尼岛链碱性火山中心的新构造学和地球化学：参与 EDISON 项目

• 批准号: 9403773
• 负责人: Michael Perfit
• 金额: --
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-05-15 至 1997-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9403773&HistoricalAwards=false
• 关键词: Neotectonics; Geochemistry; Alkalic; Volcanic; Centers

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.

OCE-9403773 Perfit 在该项目中，PI将参加EDISON巡航（德国、加拿大、美国和澳大利亚参与者; Crusie船-索内号（德国）），以调查太平洋西南部年轻碱性火山中心（TLTF）的结构、岩石学和构造。 这项研究的一个有趣的方面是在一些碱性玄武岩中存在地幔楔捕虏体。 这些捕虏体富含硫酸盐和碳酸盐（交代）。 另一个有趣的方面是1982年在利希尔岛发现了一个金矿存款。 作者认为，“这可能是世界上最著名的地方”，在这里研究会聚边缘的伸展构造、弧岩浆作用、地幔交代作用和金铜矿化之间的相互关系。 这就是团队要做的。 航行时间和其他海上费用将由德国人承担; PI只要求为巡航前费用和巡航后研究提供资金。