Experimental Determination of Near Solidus Melts to Spinel and Garnet Peridotite

尖晶石和石榴石橄榄岩近固相线熔体的实验测定

• 批准号: 9902684
• 负责人: Paul Hess
• 金额: $ 17.82万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-07-01 至 2003-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9902684&HistoricalAwards=false
• 关键词: Experimental; Determination; Near; Solidus; Melts

9902684HessThe purpose of this research proposal is to determine by experiment the compositions of melts produced by extremely small degrees of melting of the Earth's upper mantle. The properties, compositions and the ultimate fate of such melts are important keys for our understanding of melt generation, melt transport and the creation of mantle heterogeneity as observed in mantle samples brought to the earth's surface by oceanic basalts on the ocean floor and oceanic islands. Our failure to understand how the detailed geochemical properties of such basalts arise may largely be the result of the ubiquity and unusual chemical compositions of melts produced at the initiation of melting in the mantle. These experiments will constrain the complex melt processes that operate to produce the vast variety of basalts on Earth, and indeed, even on other planets.

9902684赫斯这项研究计划的目的是通过实验来确定地球上地幔极轻微熔融所产生的熔体的成分。 这些熔体的性质、组成和最终命运是我们理解熔体生成、熔体输送和地幔不均匀性形成的重要关键，正如在洋底和大洋岛屿上的大洋玄武岩带到地球表面的地幔样品中所观察到的那样。 我们未能了解这些玄武岩的详细地球化学性质是如何产生的，这可能在很大程度上是由于地幔熔融开始时产生的熔体的普遍存在和不寻常的化学成分。 这些实验将限制复杂的熔融过程，这些过程在地球上甚至在其他行星上产生了各种各样的玄武岩。