RUI: COLLABORATIVE RESEARCH: Pluton Emplacement in Relation to Jurassic Volcanic Arc Evolution and Orogenesis in the Northern Sierra Terrane, California

加州的北方山脉 侏罗纪火山-深成岩的广泛暴露 形成于北太平洋边缘 美国人 如果提供了放置紧密的可能性， 对包括弧在内的构造事件发生时间的限制 岩浆作用、变质作用和变形作用 弧的建立及其随后的发展和最后的 杀伤性 这项工作涉及使用化石年龄， 不同阶段的广泛放射性年龄测定 深成组合 当与其他 数据，详细的构造和岩浆年代学 为研究区域建立的事件将允许严格的 与Sierra中其他中生代火山岩的比较 并将有助于评估区域构造模型。

The northern Sierra terrane of California contains extensive exposures of a Jurassic volcano-plutonic assemblage that formed on the Pacific margin of north American. If offers the possibility of placing tight limits on the timing of tectonic events including arc magmatism, metamorphism and deformation associated with building of the arc and its subsequent development and final destruction. The work involves using fossil ages and extensive radiometric age determinations from various phases of the plutonic assemblage. When integrated with other data, the detailed chronology of structural and magmatic events established for the study area will allow rigorous comparison with other mid-Mesozoic terranes in the Sierra and will help evaluate regional tectonic models.