Volcanic Breccias: Evaluation of Fragment and Deposit Origins and Distribution within Small-Volume Composite Volcanoes

这项研究将系统地描述火山的起源， 角砾岩及其组成碎片，从而开发出一种新的 遗传分类方案主要使用基于字段的 观察标准。 综合实地和实验室研究 将分两个阶段进行。 I期研究将重点关注 暴露良好的角砾岩，主要是在第四纪火山上， 关系允许相对明确的解释 存款和颗粒来源。 这些参考网站将强调 这些类型的火山角砾岩最不为人所知。 第二阶段的调查将在暴露程度较高的， 可访问的，并绘制了地图的火山（一个活跃，一个第三纪） 为了评估不同类型的角砾岩如何分布在 火山机构，角砾岩在增长中发挥的作用， 火山的边缘

This study will systematically characterize the origins of volcanic breccias and their constituent fragments, and thus develop a new genetic classification scheme using mostly field-based observational criteria. Integrated field and laboratory studies will be undertaken in two phases. Phase I studies will focus on well- exposed breccias, mostly on Quaternary volcanoes, where field relationships permit relatively unambiguous interpretation of deposit and particle origins. These reference sites will emphasize those types of volcanic breccias that are least well understood. Phase II investigations will take place on well-exposed, accessible, and mapped volcanoes (one active, one Tertiary in age) to evaluate how breccias of different types are distributed within volcanic edifices, and the role that breccias play in the growth of the volcano.