Structural and Magmatic Disruption of an Accretionary Wedge During Ridge Subduction, Kenai Peninsula, Southern Alaska

在俯冲带，大陆板块之下的大洋板块的消耗是海底扩张的基本组成部分。活动扩张脊在这些带的俯冲被认为在岩浆活动、矿床、构造发展以及在俯冲带边缘建立的增生楔的沉积和发展方面对上覆板块产生了深刻的变化。这后一种现象很少被理解，但很重要，因为增生楔包含了世界上最大的石油和天然气矿床。本计画将收集新的野外构造资料，并利用理论分析建构加积楔的三维模型。这些新数据将提供测试最近进化模型所需的数据库。

The consumption of oceanic plates beneath continental plates at subduction zones is a fundamental component of seafloor spreading. The subduction of active spreading ridges at these zones is thought to produce profound changes to the overriding plate in terms of magmatism, mineral deposits, structural deveopment, as well as sedimentation and development of the accretionary wedge that builds up at the edge of the subduction zone. This later phenomena is poorly understood but important because accretionary wedges contain some of the world's largest oil and gas deposits. This project will collect new field structural data and use theoretical analysis to construct 3-D models of the accretionary wedge. These new data will provide the sort of database needed to test recent evolutionary models.