Petrofabric Analysis of Igneous Lamination in Layered Mafic Intrusions

层状镁铁质岩体中火成岩层理的岩石组构分析

• 批准号: 8804936
• 负责人: H. Richard Naslund
• 金额: $ 9.36万
• 依托单位: SUNY at Binghamton
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-06-01 至 1991-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8804936&HistoricalAwards=false
• 关键词: Petrofabric; Analysis; Igneous; Lamination; Layered

This research involves use of an automated devise for measuring optical orientations of mineral grains within igneous rocks to address the origin of preferred mineral fabrics. Rocks from several well-studied and well-expressed igneous bodies from East Greenland will be studied with this method to interrelate mineral fabric with macroscopic structures (layering, cross bedding, etc). Orientations, sizes, and shapes of mineral grains will be recorded to evaluate control of fabric by such processes as nucleation, crystal growth, magma convection, compaction, pore liquid migration, and recrystallization.

本研究涉及使用自动装置测量火成岩中矿物颗粒的光学取向，以解决首选矿物结构的起源。将用这种方法研究东格陵兰岛几个研究充分且表现良好的火成岩体的岩石，以将矿物结构与宏观结构（分层、交错层理等）相互联系起来。矿物颗粒的方向、大小和形状将被记录下来，以评估通过成核、晶体生长、岩浆对流、压实、孔隙液体迁移和再结晶等过程对结构的控制。