An Ion and Electron Microprobe Study of Apatite in the Red Hill Complex, New Hampshire

新罕布什尔州红山杂岩中磷灰石的离子和电子显微探针研究

• 批准号: 9017762
• 负责人: Michael Dorais
• 金额: $ 1.09万
• 依托单位: Indiana University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-01-15 至 1993-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9017762&HistoricalAwards=false
• 关键词: Ion; Electron; Microprobe; Study; Apatite

The principal investigator will study the origin of alkaline ring-dike complexes, and in particular the relationship between coexisting silica-undersaturated and silica-saturated syenites. Attention will be focused on the Red hill complex in New Hampshire, specifically on the mineral apatite, which as one of the first phases to crystallize most likely preserves information about the early history of these rocks. The relationship between rare earth element compositions of apatite in mafic enclaves to those in host syenites will be used as the primary investigative technique. The research will determine whether this approach is a useful one in establishing consanguinity between the enclaves and the host rocks, and may provide an important tool in investigating the very early stages of liquid descent in such rocks.

首席研究员将研究碱性的来源 环脉复合体，特别是 硅不饱和正长岩和硅饱和正长岩共存。 注意力将集中在新的红山综合体 汉普郡，特别是矿物磷灰石，作为一个 结晶的第一阶段很可能保存了信息 这些岩石的早期历史 的关系 镁铁质包体中磷灰石的稀土元素组成， 主正长岩中的那些将被用作主要的研究对象 法 这项研究将确定这种方法是否是 这是一个在飞地之间建立血缘关系的有用方法 和寄主岩石，并可能提供一个重要的工具， 研究这种液体下降的早期阶段 岩石化学分析方法