Petrochemical Studies of Intrusion-Related Mineralization in Southwestern North America

9527009巴顿这个合作项目（NSF和工业）将产生一个新的比较不同特征的地区与岩浆有关的矿化。 它提供了一个综合的方法来整理我们的一些主要控制岩浆有关的成矿作用。 这些研究建立在早期NSF赞助的PI研究的基础上。 行业资助/合作是到位的学生和现场支持; NSF的资金将主要用于地球化学，岩石学和地质年代学研究。 将在三个具有不同地壳成分、岩浆和构造历史以及成矿特征的地区进行对比研究。 这些对比，当考虑在一起，将提供测试的假设，不能在任何地方进行评估。 总体而言，PI将开发以下主题：（1）关键区域的特征，（2）岩浆成分对成矿作用的控制，（3）地壳规模对岩浆作用和成矿作用的控制，以及（4）反映保存、暴露和对比成岩机制的长期变化。 耦合地球化学和现场研究的目标是更好地了解地质，地球化学和代表性的岩浆热液中心的时间。

9527009 Barton This collaborative project (NSF and industry) will yield a novel comparison of igneous-related mineralization across regions of contrasting characteristics. It provides an integrated approach to sorting our some of the major controls on igneous-related metallogenesis. These studies build on earlier NSF-sponsored research by the PIs. Industry funding/collaboration is in place for student and field support; NSF funds will be used primarily for geochemical, petrological, and geochronometric studies. Comparative studies will be conducted in three regions which have contrasting crustal compositions, igneous and tectonic histories, and metallogenic characteristics. These contrasts, when considered together, will provide tests of hypotheses that can not be evaluated in any local area. Overall, the PIs will develop the following topics: (1) characteristics of key districts, (2) magmatic compositional controls on mineralization, (3) crustal-scale controls on magmatism and metallogeny, and (4) secular variations reflecting preservation, exposure, and contrasting petrogenetic regimes. The goal of the coupled geochemical and field studies is to better understand the geology, geochemistry, and timing of representative magmatic-hydrothermal centers.