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

01253120125057比克福德谷与高级区域变质作用和深熔岩有关的大型斜长岩体几乎仅限于前寒武纪时代的造山带。 它们可能表明前寒武纪构造的不同条件或板块相互作用的不同情况，然而，为了测试它们形成的各种模型，需要一个准确的时间框架，以了解造山带中变质作用、深熔作用、熔体积聚和侵位的发展。 该项目将利用经过充分研究的格伦维尔造山带的阿迪朗达克地段，其中含有典型的斜长岩，以制定详细的事件年表。 结果预计将产生足够的数据来测试斜长岩的发展模式，这将在其他前寒武纪造山带的应用。

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.