Paragenesis of Pumpellyite and the Thermal Evolution of a Continental Margin Metamorphic Belt: Northern Sierra Nevada

首席研究员提议研究斯马特维尔 复杂的西北山脉内华达州，以确定其 热结构，限制其热历史，一般来说， 为了验证碰撞时的变质效应 大陆-海洋边缘更多的是碰撞前的结果 弧火山作用的阶段比构造和热效应， 碰撞本身。 该研究将侧重于化学和 共生pumpellyite轴承岩石，并包括 磷钾镁矾中铁：亚铁比的测定 一个关键的组成部分，以及详细的岩石学研究， 并与相关的沿着160 Ma岩石进行了对比 相当于内华达州西部山脉的长度。

The principal investigator proposes to study the Smartville complex in the northwestern Sierra Nevada to determine its thermal structure, constrain its thermal history, and in general to test the hypothesis that metamorphic effects at collisional continent-ocean margins are more the result of precollisional phases of arc volcanism than of tectonic and thermal effects from the collision itself. The study will focus on the chemistry and paragenesis of pumpellyite-bearing rocks, and is to include determination of ferric: ferrous ratios in pumpellyite itself as a critical component, as well as a detailed petrologic study of the complex and a comparison with correlative 160 Ma rocks along the length of the western Sierra Nevada.