Petrologic and Geochemical Investigation of the Wrangell Volcanic Field, Alaska

兰格尔火山场(WVF)定义了与阿拉斯加南部板块汇聚有关的晚新生代火山活动的最东北部表现。这项研究的主要目标是：识别和描述造成WVF火山作用的地幔和地壳储集层；量化这些储集层在WVF镁铁质硅质产品演化中的相对作用；并评估了WVF中岩浆演化、地幔-地壳相互作用与岩石圈结构和成分之间的关系，以此作为理解大陆弧过程的模式。为了实现这些目标，计划对德鲁姆火山、丘吉尔火山和斯库库姆河火山三个主要火山中心的喷发产物进行现场、岩石学、矿物化学、元素(包括稀土元素)和同位素(锶、钕、铅)研究。

The Wrangell volcanic field (WVF) defines the northeastern- most expression of late Cenozoic volcanic activity associated wit plate convergence in southern Alaska. The primary goals of this research are: identification and characterization of mantle and crustal reservoirs responsible for WVF volcanism; quantification of the relative roles of these reservoirs in the evolution of WVF mafic silicic products; and evaluation of the relationships between magmatic evolution, mantle-crust interactions, and lithospheric structure and composition in the WVF as a model for understanding continental arc processes. In order to achieve these goals, combined field, petrographic, mineral chemistry, elemental (including REE), and isotopic (Sr, Nd, Pb) studies of eruptive products from three major WVF volcanic centers, Mount Drum, Mount Churchill, and Skookum Creek, are planned.