Collaborative Research: Crystallization Ages and Thermal Histories of Adirondack Anorthosites and Anatectites: Implications for Anorthosite Emplacement and Thermal Contributions to

01253120125057比克福谷与高级区域变质作用和深成岩有关的大型斜长岩体几乎局限于前寒武纪的造山带。它们可能指示了不同的前寒武纪构造条件或不同的板块相互作用环境，但为了检验它们形成的各种模式，需要一个准确的造山带中变质作用、深熔作用、熔体聚集和侵位的时间框架。该项目将利用格伦维尔造山运动中研究得很好的阿迪朗达克地段，其中包含典型的斜长岩深成岩系，以制定详细的事件年表。预计结果将产生足够的数据来测试斜长岩的发育模型，这将在其他前寒武纪造山带中应用。

01253120125057BickfordValleyLarge anorthosite bodies associated with high-grade regional metamorphism and anatectites are nearly restricted to orogens of Precambrian age. They may indicate different conditions for Precambrian tectonics or different circumstances of plate interactions, however to test various models for their formation an accurate temporal framework for the development of metamorphism, anatexis, melt accumulations and emplacement in orogens is required. This project will utilize the well studied Adirondack sector of the Grenville orogeny which contains classic anorthosite plutons to develop a detailed chronology of events. Results are expected to produce sufficient data to test models of anorthosite development, which will have applications in other Precambrian orogenic belts.