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内华达山脉西北部的斯玛特维尔综合体，以确定其热结构，限制其热历史，并总体上检验以下假设：碰撞大陆-海洋边缘的变质效应更多是弧火山活动的碰撞前阶段的结果，而不是碰撞本身的构造和热效应的结果。 该研究将重点关注含泵贝利石岩石的化学和共生作用，包括确定泵贝利石本身作为关键成分的铁：亚铁比率，以及对该杂岩进行详细的岩石学研究，并与内华达山脉西部沿线的相关 160 Ma 岩石进行比较。

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.