Experimental Studies of the Interrelationship Between High-Al and High-Mg Subduction-related Basalts

高铝高镁俯冲相关玄武岩相互关系的实验研究

• 批准号: 8816108
• 负责人: A. Dana Johnston
• 金额: $ 8.15万
• 依托单位: University of Oregon Eugene
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-06-01 至 1991-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8816108&HistoricalAwards=false
• 关键词: Experimental; Studies; Interrelationship; Between; Al

This proposal requests funding to support a high-pressure experimental research program designed to evaluate whether a plausible petrogenenetic link exists between the voluminous high- alumina basalts (HAB) and the rare high-magnesia basalts (HMB) found in most island arc settings. In this proposal, a two- pronged experimental approach is described that will provide important new insight into the relationship (if any) between HAB and HMB. The important question to be answered from these experiments is whether HAB melt coexists with olivine (+/- other phases) anywhere within the melting interval of the HMB. The study will increase our understanding of the formation of the important island arc (e.g. Japan, Aleutians, etc.) volcanics.

该提案要求提供资金，以支持一个高压 实验研究计划旨在评估是否 大量的高- 氧化铝玄武岩（HAB）和稀有高镁玄武岩（HMB） 在大多数岛弧环境中都能找到 在这一建议中，两个- 分叉的实验方法描述，将提供 对香港政务司与 还有HMB。 我们要回答的重要问题是 HAB熔体是否与橄榄石（+/-其他）共存 相）在HMB的熔融区间内的任何位置。 的 研究将增加我们对形成的理解 重要的岛弧（如日本、阿留申群岛等）火山岩