CSEDI Collaborative Research: Origin of Inclusions in Diamonds from the Deep Mantle

CSEDI 合作研究：深部地幔钻石内含物的起源

• 批准号: 9709712
• 负责人: Michael Drake
• 金额: $ 10.09万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-08-01 至 2000-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9709712&HistoricalAwards=false
• 关键词: CSEDI; Collaborative; Research; Origin; Inclusions

9709712 Drake Recent identification of the deep origin of some inclusions from diamonds opens a way to constrain the mineral and chemical composition of the deep mantle through direct observation of these samples. The PIs propose to determine the origin of selected inclusions by matching their major and trace element chemistry in experiments under the P-T conditions of the transition zone and lower mantle. They hope to identify the original assemblages and thus place constraints on the chemistry of the source region. In addition, they will develop a rapid in- situ X-ray technique for identifying inclusions in diamonds from the deep mantle and thus obtain new samples for the future studies of their origin. The proposed research is likely to increase substantially our understanding of the composition of the deep mantle and its structure. ***

小行星9709712 最近对某些金刚石包裹体的深部来源的鉴定，为通过直接观察这些样品来限制深部地幔的矿物和化学成分开辟了一条途径。 PI建议通过在过渡带和下地幔的P-T条件下进行实验，通过匹配其主元素和微量元素化学来确定所选包裹体的来源。 他们希望能够识别原始的组合，从而对源区的化学性质进行限制。 此外，他们还将开发一种快速原位X射线技术，用于识别来自地幔深处的钻石中的包裹体，从而为未来研究其起源获得新的样品。 拟议中的研究可能会大大增加我们对深部地幔组成及其结构的了解。 ***