Oxygen Isotope Laser Probe Evaluation of Magmatic Versus Subsolidus Epidote

9614670莫里森是基于激光的氧同位素初步研究的结果，该研究对山上四种质地的绿帘石进行了研究。加州南部的Lowe侵入体表明，绿帘石及其邻近相的氧同位素组成可用于区分岩浆和地下绿帘石。PIS将对8个不同记载的含绿帘石的岩体进行岩石学、岩石学和基于激光的氧同位素研究，以评估通常用于区分岩浆和地下绿帘岩的结构标准的可靠性。这座山。Lowe入侵和其他含绿帘石的入侵将被研究。将进行详细的织构表征、温压测量和基于激光的氧同位素分析。

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.