Effect of High-Grade Metamorphism on Seismic Velocities of Rocks

高级变质作用对岩石地震速度的影响

• 批准号: 9003956
• 负责人: David Fountain
• 金额: $ 4万
• 依托单位: University of Wyoming
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-01 至 1992-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9003956&HistoricalAwards=false
• 关键词: Effect; Grade; Metamorphism; Seismic; Velocities

This research is to investigate the possible changes in compressional and shear-wave velocities associated with increasing metamorphic grade by determination of seismic velocities of samples from the Pikwitonei-Sachigo subprovinces, northwestern Superior Province, in Manitoba, Canada. Measurements will be made at laboratory confining pressures up to 600 MPa. Particular emphasis will be placed on data across the amphibolite-granulite facies boundary. In addition to addressing this important question, the study will also provide key rock properties data for interpretation of geophysical data to be collected by the planned Canadian LITHOPROBE project in the northwestern Superior Province.

本研究的目的是探讨 压缩波和剪切波速度 地震测定提高变质程度 来自Pikwitonei-Sachigo次省的样本的速度， 上级省西北部，位于加拿大马尼托巴省。 测量将在实验室围压高达 600兆帕。 将特别强调跨部门的数据， 角闪岩-麻粒岩相界线 除了解决 这一重要问题，研究也将提供关键的岩石 解释地球物理数据的属性数据， 计划中的加拿大LITHOPROBE项目收集的 西北部上级省。