Oxygen Isotope Laser Probe Evaluation of Magmatic Versus Subsolidus Epidote

氧同位素激光探针评估岩浆与固相线绿帘岩

• 批准号: 9614670
• 负责人: Jean Morrison
• 金额: $ 11.05万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-01-01 至 1999-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9614670&HistoricalAwards=false
• 关键词: Oxygen; Isotope; Laser; Probe; Evaluation

9614670 Morrison Results from a laser-based oxygen isotope pilot study of four textural varieties of epidote in the Mt. Lowe intrusion of southern California indicate that oxygen isotope compositions of epidote and adjacent phases can be used to distinguish magmatic from subsolidus epidote. The PIs will conduct a combined petrographic, petrologic and laser-based oxygen isotope study of epidote from eight different well documented epidote-bearing plutons to assess the reliability of the textural criteria that are commonly used to distinguish magmatic from subsolidus epidote. The Mt. Lowe intrusion and other epidote-bearing intrusions will be studied. Detailed textural characterization, thermobarometry and laser-based oxygen isotopic analyses will be conducted.

9614670莫里森的结果，从激光为基础的氧同位素试点研究的四个纹理品种的绿帘石在山。加州南部Lowe岩体的氧同位素组成表明，绿帘石及其相邻相的氧同位素组成可用于区分岩浆和亚固态绿帘石。研究所将对来自8个不同的有充分记录的含绿帘石岩体的绿帘石进行岩相学、岩石学和基于激光的氧同位素综合研究，以评估通常用于区分岩浆绿帘石和亚固体绿帘石的结构标准的可靠性。山脉将研究Lowe侵入体和其他含绿帘石侵入体。将进行详细的结构表征、热压测量和激光氧同位素分析。