Hematization in Subaerial Basalts and its Relationship to Post-Emplacement Processes: A Paleomagnetic Study

赤铁矿在金矿床冷却后蚀变中的作用 陆下玄武岩基本上没有详细说明。 当赤铁矿 存在于玄武岩中，常被认为是后成的 在没有任何固体的熔岩冷却过程中的变化 岩石学证据 最氧化的部分流， 在古地磁学研究中经常避免流动顶部。 然而，关于不同阶段的重要信息， 蚀变和赤铁矿的作用是可利用的方向 赤铁矿的磁化强度 本项目是研究赤铁矿 利用古地磁学和氧化物研究陆上玄武岩的成因 岩石学 PI将对玄武岩桩进行取样， 经历不同类型的改变。 最终目标是 制定后冷却、氧化的概念模型， 岩石学家，地球化学家和古地磁学家将有一个 解释血红素化存在的基础。

The role of hematite in the post-cooling alteration of subaerial basalts is largely unspecified. When hematite is present in a basalt, it is often attributed to deuteric alteration during cooling of a lava without any solid petrographic evidence. The most oxidized portions of flows, the flow tops, are often avoided during paleomagnetic studies. However, important information regarding the different stages of alteration and the role of hematite is available in the direction of the hematite magnetization. This project is to study hematite genesis in subaerial basalts, using paleomagnetism and oxide petrography. The PI will sample basalt piles which have experience varying types of alteration. The ultimate goal is to formulate a conceptual model of post-cooling, oxidation so that petrologists, geochemists and paleomagnetists will have a foundation with which to interpret the presence of hematization.