High Pressure Phase Equilibrium Studies Bearing on the Magmatic Evaluation of the Mantle and Crust

高压相平衡研究对地幔和地壳岩浆评价的影响

• 批准号: 9219159
• 负责人: Dean Presnall
• 金额: $ 49.2万
• 依托单位: University of Texas at Dallas
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-04-01 至 1998-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9219159&HistoricalAwards=false
• 关键词: Pressure; Phase; Equilibrium; Studies; Bearing

This ongoing research has a long-term objective of developing a systematic body of liquidus phase equilibrium data on model chemical systems relevant to the origin and crystallization of the presumed early magma ocean and on the generation of magmas from the Earth's mantle. The proposed projects will utilize piston cylinder and multianvil techniques to determine the phase relationships that control the melting behavior of model amphibolite-kyanite-quartz eclogite at 3 GPa and the melting and crystallization behavior of model peridotite at pressures from 7 - 16 GPa. Results of these studies will directly address aspects of magma generation at subduction zones and will place additional constraints on the formation and crystallization of a presumed early magma ocean.

这项正在进行的研究具有长期目标，即在与假定早期岩浆海洋的起源和结晶有关的模型化学系统上开发系统的体系，并从地球地幔中产生岩浆。 拟议的项目将利用活塞缸和多轴线技术来确定控制模型在3 GPA处模型两栖石 - 千万夸尔兹的熔融行为，以及7-16 GPA的压力下模型橄榄石模型的熔融和结晶行为。 这些研究的结果将直接解决俯冲区域岩浆产生的各个方面，并将对假定的早期岩浆海洋的形成和结晶施加其他约束。