The Experimental Determination of the Melting Curves of Mantle Materials at Mantle Conditions

地幔条件下地幔物质熔化曲线的实验测定

• 批准号: 8708540
• 负责人: Dion Heinz
• 金额: $ 11.81万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-07-01 至 1989-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8708540&HistoricalAwards=false
• 关键词: Experimental; Determination; Melting; Curves; Mantle

Experimental measurements of the melting curves of (Mg,Fe)- 2Si)04, (Mg,Fe)3Al2Si3012, and (Mg,Fe)Si03 at pressures ranging from the lowermost upper mantle (15GPa) to the core-mantle boundary (130GPs) will be made using a laser heated diamond cell. The research will significantly improve the accuracy of the temperature measurements by increasing the stability of the Nd-Yag laser and using a multichannel optical analyzer. Calcu- lations to model the thermal structure of the laser heated diamond cell samples are also planned. These calculations are necessary to better characterize the large temperature gradients across the sample as well assess the magnitude and potential importance of thermal stresses within the samples.

实验测定了（Mg，Fe）-（Mg，Fe）合金的熔化曲线。 （Mg，Fe）3Al 2Si 3 O 12和（Mg，Fe）SiO 3在压力范围为 从上地幔最下部（15 GPa）到核幔 边界（130 GPs）将使用激光加热金刚石 cell. 这项研究将大大提高 通过提高温度测量的稳定性， Nd-YAG激光器和使用多通道光学分析仪。 计算- 模拟激光加热的热结构 还计划制作钻石细胞样品。 这些计算是 为了更好地表征大的温度梯度 并评估其规模和潜力 样品内热应力的重要性。