The geochemical role of iron in basaltic magmatism and planetary differentiation: an experimental study

铁在玄武岩岩浆作用和行星分异中的地球化学作用：实验研究

• 批准号: DP0450252
• 负责人: Prof Hugh O'Neill
• 金额: $ 7.31万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2004
• 资助国家: 澳大利亚
• 起止时间: 2004-01-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0450252
• 关键词: geochemical; role; iron; basaltic; magmatism

The amount of Fe in primitive terrestrial basalts is surprisingly variable. The reasons for this are poorly understood, but could include melting of Fe-enriched refertilized mantle sources, increasing partitioning of FeO into the melt with depth of melting, or oxidation of some FeO to Fe2O3. An experimental investigation of the effects of Fe both as 2+ and 3+ on the partial melting of model mantle material should help resolve this problem, while also providing the fundamental thermodynamic data needed to calibrate a general model for upper mantle phase relations.

原始地面玄武岩中的Fe量令人惊讶地变化。 造成这种情况的原因很少，但可能包括融合了富含富含的地幔源的融化，将FEO分配到融化中，将FEO分配到熔体中，或将某些FEO氧化到FE2O3中。 Fe AS AS 2+和3+对模型地幔材料部分熔化的影响的实验研究应有助于解决此问题，同时还提供了校准上地幔相位关系的一般模型所需的基本热力学数据。