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有一个长期目标， 发展液相线相平衡体系 与起源相关的模型化学系统的数据， 推测早期岩浆海洋的结晶， 从地幔中产生的岩浆 拟议 项目将采用活塞缸和多砧 技术来确定控制的相位关系 斜长角闪岩-蓝晶石-石英模型熔融行为 榴辉岩在3GPa时的熔融和结晶 7 - 16 GPa压力下橄榄岩模型的行为。 这些研究的结果将直接涉及 岩浆在俯冲带生成， 对形成和结晶的附加限制 早期岩浆海洋的证据