Petrochemical Studies of Intrusion-Related Mineralization in Southwestern North America

这个合作项目（NSF和工业界）将对不同特征区域的火成岩相关矿化进行新颖的比较。它提供了一个综合的方法来分类我们的一些主要控制火成岩成矿。这些研究建立在早期nsf赞助的pi研究的基础上。为学生和现场提供行业资助/合作；NSF基金将主要用于地球化学、岩石学和地质年代学研究。在地壳组成、火成岩和构造历史、成矿特征等方面进行对比研究。如果把这些对比放在一起考虑，就可以检验在任何地方都无法评估的假设。总体而言，pi将发展以下主题：(1)关键地区的特征，(2)岩浆成分对成矿作用的控制，(3)地壳尺度对岩浆作用和成矿作用的控制，以及(4)反映保存、暴露和岩石形成机制对比的长期变化。地球化学和野外研究相结合的目的是更好地了解具有代表性的岩浆-热液中心的地质、地球化学和时间。

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.