Time-Space Variability of Mafic Plutons in the Sierra-MojaveBatholith

本研究的目的是研究内华达山脉、怀特山脉、因约山脉和莫哈韦沙漠地区基性侵入岩的地球化学、同位素地质、年龄及其构造意义。建议的研究将包括对广泛存在的独立岩脉群的研究，这是一个跨越几个构造边界的同时期侵入套件。野外作图、主要元素、微量元素和同位素分析、Sr、Nd和Pb同位素分析，以及岩石套件的U-Pb年龄测定，应提供对产生加利福尼亚岩浆岩的地幔性质的约束，并提供测试美国西南部构造演化各种模型的数据。

The goal of this research project is to investigate the geochemistry, isotope geology, age, and tectonic significance of mafic intrusive rocks in the Sierra Nevada, White Mountains, Inyo Mountains, and Mojave Desert. The proposed research will include a study of the widespread Independence dike swarm as a coeval intrusive suite which crosses several tectonic boundaries. Field mapping, major-, trace-element and isotopic analyses, Sr, Nd, and Pb isotopic analyses, and U-Pb age determinations of rock suites should provide constraints on the nature of the mantle that generated the batholithic magmas in California and data to test various models for the tectonic evolution of the southwestern United States.