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

俯冲带大陆板块之下的海洋板块的消耗是海底扩张的一个基本组成部分。这些带的活动扩张脊的俯冲作用被认为对俯冲板块的岩浆作用、矿床、构造发育以及在俯冲带边缘堆积的增生楔体的沉积和发育产生了深刻的变化。人们对后一种现象知之甚少，但却很重要，因为沉积楔形带蕴藏着一些世界上最大的石油和天然气矿藏。该项目将收集新的现场构造数据，并利用理论分析建立增长楔体的三维模型。这些新数据将提供测试最新进化模型所需的那种数据库。

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.